Old 04-11-2018, 08:10 PM #1
Dim Dim is offline
Junior Member
 
Join Date: Apr 2018
Posts: 4
Rep Power: 0
Dim is on a distinguished road
Dim Dim is offline
Junior Member
 
Join Date: Apr 2018
Posts: 4
Rep Power: 0
Dim is on a distinguished road
Default How to test a laser diode ?

Purchased from eBay Blue Laser Diode 1.6w blue beam 1600mW 445nm M140 A-TYPE UK 450NM . But it is not burning. Tried with 1.2 A – there is blue light coming from the laser, it focuses on some points, but nothing, it gets hot. Tried 2 types of lenses, see attachments.
Any way to test if the laser is ok ?
Attached Thumbnails
How to test a laser diode ?-p.jpg   How to test a laser diode ?-p1.jpg  


Dim is offline   Reply With Quote


















Old 04-11-2018, 08:38 PM #2
paul1598419's Avatar
Class 4 Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 9,712
Rep Power: 3710138
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 4 Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 9,712
Rep Power: 3710138
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: How to test a laser diode ?

Where to start?! You likely destroyed the diode if it ever worked to begin with. You need a constant current driver to drive these diodes. I don't know what to say about the lens to have pictured. It may be acrylic, which would melt at these powers and needs to be in a housing to focus it properly anyway. The laser diode should be pressed into a module or heat sink which would allw you to use the lens for collimating the beam. There's more, but I'm done.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

473nm 50 mW BWB-10-OEM DPSS
477nm 127 mW 501B
488nm 135 mW ECD Sharp diode
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
493nm 120 mW 501B
502nm 110 mW 501B Lifetime
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
638nm 1 watt Cyprus II
635nm 5mW pointer
635nm 100mW pointer
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
Ocean Optics USB2000 Spectrometer
B&W TEK BTC100 Spectrometers X3
Scientech Vector S310 with AC2500 10 Watt LPM/ Hyperion 6 Watt & 20 Watt LPM/ Radiant X4 3.7 Watt LPM
paul1598419 is online now   Reply With Quote
Old 04-11-2018, 09:05 PM #3
Dim Dim is offline
Junior Member
 
Join Date: Apr 2018
Posts: 4
Rep Power: 0
Dim is on a distinguished road
Dim Dim is offline
Junior Member
 
Join Date: Apr 2018
Posts: 4
Rep Power: 0
Dim is on a distinguished road
Default Re: How to test a laser diode ?

The diode has metal housing and cooling. Initially @ 200 mA it was burning with the “big” lens @ about 2-3 cm, but very lightly. Then I made a constant current power supply (LM317) @ 1.2 A and the diode was not burning any more even @ 200 mA.
Question: How a person can be sure that this is actually 1.6W laser ?
Attached Thumbnails
How to test a laser diode ?-p2.jpg  
Dim is offline   Reply With Quote
Old 04-11-2018, 09:35 PM #4
Class 1M Laser
 
Join Date: Nov 2016
Location: Estonia
Posts: 126
Rep Power: 443438
Nexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond repute
Nexgen Nexgen is online now
Class 1M Laser
 
Join Date: Nov 2016
Location: Estonia
Posts: 126
Rep Power: 443438
Nexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond reputeNexgen has a reputation beyond repute
Default Re: How to test a laser diode ?

Quote:
Originally Posted by Dim View Post
The diode has metal housing and cooling. Initially @ 200 mA it was burning with the “big” lens @ about 2-3 cm, but very lightly. Then I made a constant current power supply (LM317) @ 1.2 A and the diode was not burning any more even @ 200 mA.
Question: How a person can be sure that this is actually 1.6W laser ?
You already killed it, it turned to LED mode.

What power supply are you using?
__________________
405nm: 900mw BRD-209 build
405nm: Pen Style ~5mw
445nm: Sanwu Spiker ~1.6w
455nm: NUBM08 ~6w with PSU
473nm: B&W TEK-OEM 2x
488nm: CNI-PGL-III-M ~120mw
493nm: Sanwu Pocket ~120mw
505nm: Dead Module
520nm: Sanwu Silver ~1.2w
520nm: Sanwu Pocket ~130mw
532nm: CNI PGL-III ~200mw(needs new pump)
532nm: Jetlasers PLE-Pro ~800mw
543nm: Pointer with line. <1mw
638nm: Ebay Pointer ~5mw
638nm: Gatling Laser(Sanwu driver) ~300mw
650nm: LPC-840 Build ~350mw
670nm: Laser Module 5mw
780nm: Laser Module 5mw
808nm: Module ~300mw
980nm: EBay Pointer ~70mw

Last edited by Nexgen; 04-11-2018 at 09:58 PM.
Nexgen is online now   Reply With Quote
Old 04-11-2018, 09:52 PM #5
Class 3B Laser
 
Join Date: May 2011
Posts: 3,945
Rep Power: 3602686
Encap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond repute
Encap Encap is offline
Class 3B Laser
 
Join Date: May 2011
Posts: 3,945
Rep Power: 3602686
Encap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond repute
Default Re: How to test a laser diode ?

Quote:
Originally Posted by Nexgen View Post
You already killed it, it turned to LED mode.
What he said ^^^

PS@ 200mA you would be lucky if it put out 200mW
Encap is offline   Reply With Quote
Old 04-11-2018, 10:29 PM #6
Alien Laser's Avatar
Class 3R Laser
 
Join Date: Oct 2015
Location: Planet Earth
Posts: 1,114
Rep Power: 1816089
Alien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond repute
Alien Laser Alien Laser is offline
Class 3R Laser
Alien Laser's Avatar
 
Join Date: Oct 2015
Location: Planet Earth
Posts: 1,114
Rep Power: 1816089
Alien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond repute
Default Re: How to test a laser diode ?

It gets very hot because its LED, you had to much V on the diode, the way diodes work the require a driver to provide A and regulate V, someone correct me if am wrong
what did you use to measure the driver are you correct you used a 1.2 A and what about the Voltage !
__________________
People Ask
Why wouldn't you point a laser at the sky?  - > I Say
Because the death star that is floating above earth secretly... may think of it as a challenge and shoot their laser at us in return.... Do you really want that? —
_
This is what happen if you shine the laser at the ( UFO ) it may shine back as
( Alien Laser )
Alien Laser is offline   Reply With Quote
Old 04-11-2018, 11:10 PM #7
Dim Dim is offline
Junior Member
 
Join Date: Apr 2018
Posts: 4
Rep Power: 0
Dim is on a distinguished road
Dim Dim is offline
Junior Member
 
Join Date: Apr 2018
Posts: 4
Rep Power: 0
Dim is on a distinguished road
Default Re: How to test a laser diode ?

@ 200 mA – used one Li-ion cell, about 3.7-3.8 V
@ 1.2 A – used 12V power supply with LM317 regulator, not sure what was the voltage on the diode, but the current had not raised above 1.2A.

Is there a way to check if it is turned to LED mode ?
Attached Thumbnails
How to test a laser diode ?-p3.jpg   How to test a laser diode ?-p4.jpg   How to test a laser diode ?-p5.jpg   How to test a laser diode ?-p6.jpg   How to test a laser diode ?-p7.jpg  

How to test a laser diode ?-p8.jpg  
Dim is offline   Reply With Quote
Old 04-12-2018, 12:34 AM #8
paul1598419's Avatar
Class 4 Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 9,712
Rep Power: 3710138
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 4 Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 9,712
Rep Power: 3710138
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: How to test a laser diode ?

Sure. It gets hot, but puts out very little light. The facet has been damaged by catastrophic optical damage by over driving it, and without the proper heat sink to pull the heat away from the diode.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

473nm 50 mW BWB-10-OEM DPSS
477nm 127 mW 501B
488nm 135 mW ECD Sharp diode
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
493nm 120 mW 501B
502nm 110 mW 501B Lifetime
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
638nm 1 watt Cyprus II
635nm 5mW pointer
635nm 100mW pointer
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
Ocean Optics USB2000 Spectrometer
B&W TEK BTC100 Spectrometers X3
Scientech Vector S310 with AC2500 10 Watt LPM/ Hyperion 6 Watt & 20 Watt LPM/ Radiant X4 3.7 Watt LPM
paul1598419 is online now   Reply With Quote
Old 04-12-2018, 01:25 AM #9
Alien Laser's Avatar
Class 3R Laser
 
Join Date: Oct 2015
Location: Planet Earth
Posts: 1,114
Rep Power: 1816089
Alien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond repute
Alien Laser Alien Laser is offline
Class 3R Laser
Alien Laser's Avatar
 
Join Date: Oct 2015
Location: Planet Earth
Posts: 1,114
Rep Power: 1816089
Alien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond reputeAlien Laser has a reputation beyond repute
Default Re: How to test a laser diode ?

Yeah its LED, the lens could also cause the laser to go LED what lens did you use that is 1 fat lens
__________________
People Ask
Why wouldn't you point a laser at the sky?  - > I Say
Because the death star that is floating above earth secretly... may think of it as a challenge and shoot their laser at us in return.... Do you really want that? —
_
This is what happen if you shine the laser at the ( UFO ) it may shine back as
( Alien Laser )
Alien Laser is offline   Reply With Quote
Old 04-12-2018, 02:57 AM #10
WizardG's Avatar
Class 2M Laser
 
Join Date: May 2011
Location: Oregon
Posts: 546
Rep Power: 605123
WizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond repute
WizardG WizardG is online now
Class 2M Laser
WizardG's Avatar
 
Join Date: May 2011
Location: Oregon
Posts: 546
Rep Power: 605123
WizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond reputeWizardG has a reputation beyond repute
Default Re: How to test a laser diode ?

@ AL, "It gets very hot because its LED, you had to much V on the diode, the way diodes work the require a driver to provide A and regulate V, someone correct me if am wrong "

You're wrong. A driver regulates current, not voltage.
__________________
125mW 405
1.157 watt 447
2 meter long hene @ 57mW
Assorted greenies, best @ 244mW of 520
WizardG is online now   Reply With Quote
Old 04-12-2018, 03:53 AM #11
paul1598419's Avatar
Class 4 Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 9,712
Rep Power: 3710138
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 4 Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 9,712
Rep Power: 3710138
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: How to test a laser diode ?

You would think so, right? But, I have gotten Chinese drivers that are nothing more than voltage regulators. It shows up easily on a dummy load. This is especially true of very cheap drivers.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

473nm 50 mW BWB-10-OEM DPSS
477nm 127 mW 501B
488nm 135 mW ECD Sharp diode
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
493nm 120 mW 501B
502nm 110 mW 501B Lifetime
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
638nm 1 watt Cyprus II
635nm 5mW pointer
635nm 100mW pointer
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
Ocean Optics USB2000 Spectrometer
B&W TEK BTC100 Spectrometers X3
Scientech Vector S310 with AC2500 10 Watt LPM/ Hyperion 6 Watt & 20 Watt LPM/ Radiant X4 3.7 Watt LPM
paul1598419 is online now   Reply With Quote
Old 04-12-2018, 05:29 AM #12
deadshadow's Avatar
Class 2 Laser
 
Join Date: Feb 2016
Location: Thessaloniki,Greece
Posts: 352
Rep Power: 1185399
deadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond repute
deadshadow deadshadow is online now
Class 2 Laser
deadshadow's Avatar
 
Join Date: Feb 2016
Location: Thessaloniki,Greece
Posts: 352
Rep Power: 1185399
deadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond repute
Default Re: How to test a laser diode ?

as everyone said the diode is dead,you should not try to make your own driver as even an overshoot on the start would kill the diode,there are tons of things that can go wrong on a laser build but we can't be sure what happend in your case.

about your 2nd question if it is a blue diode then yes its the right thing that you bought,low powered single mode blue diodes are more rare and expensive so no way to got something else.
__________________
Chris

custom builds
405nm 12x s06j 410ma 732mw rebuild from bdr209
445nm A-140 1.5A
445nm plb450 1.8w
455nm nubm08 4.2A (focusable with GBALL intact)
462nm ndb7675 2.2A
520nm pl520b 250ma (110mw G2)
638nm mitsubishi ml501p73 1A(handheld tec cooled)
637nm Oclaro HL6388MG 410ma DIED
650nm 16x diode 220ma
650nm 22x diode 400ma
lpc 840 390ma 300mw with G2

780nm from cdrw 165ma
LPM's:hyperion cuprum,pocket lpm v2
deadshadow is online now   Reply With Quote
Old 04-12-2018, 07:15 AM #13
Dim Dim is offline
Junior Member
 
Join Date: Apr 2018
Posts: 4
Rep Power: 0
Dim is on a distinguished road
Dim Dim is offline
Junior Member
 
Join Date: Apr 2018
Posts: 4
Rep Power: 0
Dim is on a distinguished road
Default Re: How to test a laser diode ?

Would you recommend looking for other lenses ? The fat came with the diode, the slim with the housing.
Not so convinced that this was really 1.6W laser diode. The UK seller on eBay stopped selling those and seems moved the ads to another account.
Any reliable seller of working refurbished laser diodes for engraving purposes ?
Attached Thumbnails
How to test a laser diode ?-p9.jpg   How to test a laser diode ?-p10.jpg   How to test a laser diode ?-p11.jpg  
Dim is offline   Reply With Quote
Old 04-12-2018, 12:42 PM #14
deadshadow's Avatar
Class 2 Laser
 
Join Date: Feb 2016
Location: Thessaloniki,Greece
Posts: 352
Rep Power: 1185399
deadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond repute
deadshadow deadshadow is online now
Class 2 Laser
deadshadow's Avatar
 
Join Date: Feb 2016
Location: Thessaloniki,Greece
Posts: 352
Rep Power: 1185399
deadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond reputedeadshadow has a reputation beyond repute
Default Re: How to test a laser diode ?

Quote:
Originally Posted by Dim View Post
Would you recommend looking for other lenses ? The fat came with the diode, the slim with the housing.
Not so convinced that this was really 1.6W laser diode. The UK seller on eBay stopped selling those and seems moved the ads to another account.
Any reliable seller of working refurbished laser diodes for engraving purposes ?
about the lens something like this will work better.
https://www.ebay.com/itm/405-G-2-G2-...kAAOSwCQZZDCYb

but in your case you need a new diode.
im prety sure the diode you recieved was correct A140 or M140 Atype as any lower single mode 445nm would instantly melt the wires of the emitter at 1.2A

if you make another try get a proper driver for your diode and heatsink both diode and driver well.
__________________
Chris

custom builds
405nm 12x s06j 410ma 732mw rebuild from bdr209
445nm A-140 1.5A
445nm plb450 1.8w
455nm nubm08 4.2A (focusable with GBALL intact)
462nm ndb7675 2.2A
520nm pl520b 250ma (110mw G2)
638nm mitsubishi ml501p73 1A(handheld tec cooled)
637nm Oclaro HL6388MG 410ma DIED
650nm 16x diode 220ma
650nm 22x diode 400ma
lpc 840 390ma 300mw with G2

780nm from cdrw 165ma
LPM's:hyperion cuprum,pocket lpm v2
deadshadow is online now   Reply With Quote
Old 04-12-2018, 01:23 PM #15
Shotgundrums's Avatar
Class 1M Laser
 
Join Date: Jun 2017
Location: Okinawa, JP
Posts: 175
Rep Power: 938733
Shotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond repute
Shotgundrums Shotgundrums is online now
Class 1M Laser
Shotgundrums's Avatar
 
Join Date: Jun 2017
Location: Okinawa, JP
Posts: 175
Rep Power: 938733
Shotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond reputeShotgundrums has a reputation beyond repute
Default Re: How to test a laser diode ?

I made a thread titled “in need of itty bitty driver.” And I showed one which is nothing more than a couple transistors, caps and resistors and a switch, from a pointer.... the APC types... would they be better suited for low power applications i.e. measuring or leveling tools, low power pointers, gun sights etc?...

Quote:
Originally Posted by paul1598419 View Post
You would think so, right? But, I have gotten Chinese drivers that are nothing more than voltage regulators. It shows up easily on a dummy load. This is especially true of very cheap drivers.
__________________
405nm BDR-208BK/SL-D-3 515mA/SLC6 -Vio-latile 2
445nm 1W Sanwu Challenger
450nm PLTB450B/1.8A XDrive/Lifetime17 Cu Pen -SacréBLUE
462nm M462/1.8A XDrive/SL stainless-extended - The Blue Job
490nm GH04850B2G/Flexdrive 150mA/Leadlight/ “The GD Pen is Blue”
520nm PLP520-B1/nano drive 470mA/Microstream -GreenStream
638nm GH0631IA2G/nano drive 275mA/Lifetime17 HS -Red Richard
650nm GGW/Flexdrive 440mA/UltraFire C3/Lifetime17 HS.
-Crimson WaveLength
****TO BE CONTINUED****


~{OBITUARIES}~
•638nm 700mW Oclaro in Stainless SL Host. Passed suddenly while fog lasing. She was only 2 month old. Her heart and host were donated to lend life to an M462 and Sharp 638nm GH0631IA2G.
Shotgundrums is online now   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 06:17 PM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC