All Questions
Tagged with laser laser-diode
48
questions
2
votes
2
answers
200
views
Powering on a laser diode that exceeds PSU max current
I have a laser diode that I want to test (just seeing if it turns on). However, the threshold current is past the 10A that my bench power supply can supply, hence I can't generate any light. How can I ...
- 209
0
votes
0
answers
43
views
Issue with Gain Compensation Circuit in MLD203P1 Laser Driver
I am experiencing difficulties with the gain circuit of Thorlabs' MLD203P1 laser driver. Despite adhering to the datasheet and evaluation manual, my laser diode is burning out, and the current ...
- 1
-1
votes
1
answer
79
views
Creating a circular laser beam projection [closed]
I’m looking to create a small device (<5 in.) that will project a circular beam around it, a certain distance away from the object. The goal is to have a laser/projector module/something at the top ...
- 239
1
vote
0
answers
103
views
How to design a pulsed laser driver circuit?
I want to try a simple theoretical design of a pulsed aaser rriver circuit according to what specified in this guideline from LASER COMPONENTS. Since the guide is not exhaustive, I'd like to get some ...
- 3,550
2
votes
2
answers
257
views
Laser diode stops working after a few runs
I wanted to generate a laser pulse between 1 us and 50 us by creating a simple circuit with a source meter, as I didn't have a laser driver. At the beginning, the setup seemed to work as intended (I ...
- 139
4
votes
6
answers
948
views
How can I make a constant current source for a CW laser diode?
I need to power a single CW laser diode with a constant current source. I have attached the datasheet of the laser. It is a 2.2-2.4V laser whicht operates at 80mA at full brightness.
I see a lot of ...
- 91
0
votes
2
answers
180
views
Control laser pointer on/off from external switch
I want to hook up leads to a laser pointer so that I can control it using an external switch. The goal is to turn the laser on/off using a MOSFET connected to an Arduino.
The battery contacts are ...
0
votes
1
answer
92
views
DVD laser on metals [closed]
What metals can be heated using the laser diode from a DVD?
I tried on plastic and wood and they warmed, but I need some metals that can heat up to at least 20°C.
How much optical power can the laser ...
- 1
0
votes
0
answers
49
views
Common high power diode driver architectures?
I want to design a circuit to drive a noise sensitive, high power (~2A @1.5V), laser diode. What are the most common drive architectures that commercial laser companies use? Buck converters, linear ...
0
votes
1
answer
115
views
How to drive this specific laser
I've done just a circuit to drive an old laser and it was like this one:
I was wondering if it could be suitable for driving the laser whose datasheet is reported below.
I have these requirements:
...
- 3,550
0
votes
0
answers
117
views
DVD burner laser identification
I just disassembled the DVD writer from a laptop and scavenged some parts. Around where the laser and mirrors and opto stuff are packed together, I extracted these parts.
Which one is the laser diode ...
- 308
0
votes
0
answers
41
views
What are the ramifications of the existence of this "modulation rate" for the use of these lasers for interferometry?
I'm looking for a specific type of laser for interferometry experiments. There seem to be a lot of 1550nm fiber-coupled DFB laser diodes on websites like Alibaba. This seems to be because they are ...
- 1,281
0
votes
1
answer
162
views
VCSEL to project a 2D array of dots [closed]
Background
Apple iPhone Face ID uses VCSEL inside its dot projector to project infrared dots into a person face. Then an infrared camera captures the pattern to be used in a structured light algorithm ...
- 377
3
votes
1
answer
317
views
Troubleshooting my own PCB
I have designed my own PCB and it doesn't work correctly.
I needed to have a PCB that has only one push button to switch on and off a laser diode. The circuit does work kind of, but the laser diode ...
- 91
0
votes
2
answers
426
views
Do I need a driver for a single laser?
I want to hook up a 9v battery to a laser diode(linked to the ones I will get), but have seen laser drivers scattered across the internet and vaguely have heard of them. Do I need one to use the laser?...
- 121