Welcome to Laser Pointer Forums! If you are looking for a laser you may want to check out the Laser Company Top Sites List. The link will open in a new window for your convenience.

Colorful 2018, Colorful Laser Power Meter
 Laser Pointers SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 W-OSRAM ?

LPF Laser Pointer Company Database (link opens new window)

03-12-2015, 05:17 PM #1
 Super Moderator Join Date: Jan 2014 Location: Great White Frozen North Posts: 9,203 Rep Power: 1081900
Super Moderator

Join Date: Jan 2014
Location: Great White Frozen North
Posts: 9,203
Rep Power: 1081900
SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 W-OSRAM ?

Has anyone here worked with the SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 W by OSRAM ? If so, I'd be interested in anything you might be able to share about it.

SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 w OSRAM | eBay

__________________

Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.

Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3

03-13-2015, 02:09 AM #2
 Class 3B Laser Join Date: Aug 2013 Location: MI, US Posts: 2,655 Rep Power: 6069
The Lightning Stalker
Class 3B Laser

Join Date: Aug 2013
Location: MI, US
Posts: 2,655
Rep Power: 6069
Re: SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 W-OSRAM

I was playing with a few of those. They
need a 40-100ns pulse on the gate pin.
That is easier said than done. Then you
need a fast photodiode circuit to measure
the output, if there is any. Here is the
datasheet and application note.

datasheet.eeworld.com.cn/pdf/OSRAM/188461_Q62702P3558.pdf
http://www.osram-os.com/Graphics/XPi...SPL%20LLxx.pdf

They won't burn anything, contrary to their
claims. At least mine never did. Unless
they are fakes, which would not bode well
for any bought from China.
__________________
ALL NEW MEMBERS MUST READ THIS!!! --> http://www.laserpointersafety.com

"Where, now, is the way by which the light distributes itself" - Job 38:24

03-13-2015, 03:11 AM #3
 Super Moderator Join Date: Jan 2014 Location: Great White Frozen North Posts: 9,203 Rep Power: 1081900
Super Moderator

Join Date: Jan 2014
Location: Great White Frozen North
Posts: 9,203
Rep Power: 1081900
Re: SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 W-OSRAM

Rectify 10 to 25 MHz for the 40-100 ns pulse? Probably easier ways of getting it, I suppose. I did find that application note, have been looking around to see if someone already makes the TTL MOSFET driver shown on it, nothing found yet. Doesn't appear too difficult to build, did you build one using a chip to drive it that way?
__________________

Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.

Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3

03-13-2015, 03:39 AM #4
 Class 3B Laser Join Date: Aug 2013 Location: MI, US Posts: 2,655 Rep Power: 6069
The Lightning Stalker
Class 3B Laser

Join Date: Aug 2013
Location: MI, US
Posts: 2,655
Rep Power: 6069
Re: SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 W-OSRAM

Quote:
 Originally Posted by Alaskan Doesn't appear too difficult to build, did you build one using a chip to drive it that way?
Yes, they recommend a few chips in the app note, but I used a UCC37322 just for testing and an Arduino to deliver a 62.5ns pulse. Here is the code, but you might want to make sure it actually does what it's supposed to before charging the caps in the diode.

Code:
```// ns_Pulser.ino
// Apply 62.5ns (@ 16MHz) pulses

int laser = 2;

void setup() {
// setup:
pinMode(laser, OUTPUT);
noInterrupts();          // disable interrupts just in case
}

void loop() {
// main loop:
PIND = B00000100;        // writing to the pin register toggles
PIND = B00000100;        // output on AVR microcontrollers
delayMicroseconds(100);
}```
__________________
ALL NEW MEMBERS MUST READ THIS!!! --> http://www.laserpointersafety.com

"Where, now, is the way by which the light distributes itself" - Job 38:24

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

All times are GMT. The time now is 10:40 AM.

 -- DarkShadows V5 -- Responsive LPF -2562016 -- Default Style Contact Us - Laser Pointers - Archive - Top