i have bought a 520nm PL520 on ebay and i dont know .. is it the 30mW(PL520_B1_2) or 50mW(PL520_B1) version.
What is the differenze(case ? bonding ?), how can i find out, what type i got ?
i have bought a used ophir 20C-UAS, but the sensor does not work.
Its a 6-pin Molex connected module. I have contacted Ophir and they tells me, this is a NDA Sensor .. i cant get any informations about the interface or Analog-Output.
i think .. this Sensor is damaged, but the...
can anybody help ?
What is the rigth datasheet
SLD3237VF Datasheet (Page 2/2) | DatasheetLib.com
the same layout and the same text, but different current and voltage
today, my LG Disc Rewriter has crashed one of my discs. Now .. no detect any CD or a DVD.
I never used as writer, so i think, tha blue LD is unused.
What laserdiode type is this ...Anybody knows ?
i have bought this 500mW-LD (haha) from ebay half year ago.
ebay has closed this offer (dont ask me why :can:)
at 200mA i get ~180mW with a G-2 lens. It is a 3,8mm LD. It this Diode known ?
How much REAL power can i expect ?
i have bought this driver (3A TTL Laser Driver Board Step Down Driver Module 405nm 445nm 450nm | eBay)
I tried to adjust the values, but with a testload (4*1N4001 + 1Ohm 5W ~> M140 LD) i got this.
look the attachements
the measured current has a peak over the adjusted value.
what is the best use with a nichia M140 diode - pulsed or constant ?
if pulsed, which frequency is recommended ? Signal type ? (Rectangular or Sinus pulse)
in the datasheet i can not find a pulse width value.
the same question for a NDV4542
this is a 100mW 405nm laserdiode
CW = max...
can i use this driver (https://www.amazon.de/580-600mA-konstante-Strom-reguliert-Treiber/dp/B00BXAM7LQ/ref=pd_rhf_cr_s_cp_3?ie=UTF8&psc=1&refRID=TH59KDA8YB8H9VHCRB4H)
i want to use this to power IR-Diodes (max 700mA) ...
i want to build a green DPSS laser.
i used a 808nm 500mW LD and a "Nd:YVO4+KTP Laser Pumping Crystal".
what is the right way to install the crystal ? What should i consider to get the best efficience ? What is the best crystal working temperature (must i cooling the crystal) ?
a german user on ebay sells "New" M140 diodes from unused DLP.
I have bought three diodes and ALL diodes does not work with 1,2A (the laserpower is betwwen 30mW and 120mW.
At 1,6A the laserpower is lower than 10mW ... turning the current to 1,2A again the laser output is greter than 50mW...
i have builded a simple, small DPSS-Laser
700mW 808nm IR-Diode -> ND:YVO4 -> KTP -> IR-Filter
Now, i try to collimate the green laser.
on a simple laserpointer, there is a acrylic expanding lens, and than a collimation lens.
Where can i get a expanding lens (glass) ?
i am searching for a analog sensor to build a simple power meter with a µC.
photodiode type or thermo type - no matter
i have tried with a BPW21R, but this diode recognize difference between a 20mW and a 60mW Laserpointer.
i have bought a Ophir 20C-UAU laser measure head with USB-Plug.
I can use this with a windows PC, but i dont have a windowsPC on my garage.
I use linux, Arduino, Raspberry .. but no WIndows ;-)
any ideas or experience how to connect the Ophit 20C-UAU with a Raspberry or a Arduino ...