All Questions
19 questions
-2
votes
1
answer
202
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488 nm 30 mW 3.7 V laser: Is the driver or the diode fried at 9 V?
For a hobby project I'm doing, I accidentally gave my 488 nm 30 mW 3.7 V laser 9 V from a battery.
It appears to have died immediately.
Picture of similar laser (with housing) added for clarity. The ...
- 235
0
votes
0
answers
45
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
vote
1
answer
193
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 ...
- 3,590
2
votes
2
answers
296
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
0
votes
0
answers
53
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
124
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:
...
- 3,590
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 ...
- 1,299
0
votes
2
answers
461
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
2
votes
1
answer
1k
views
Is it possible to just take a normal (continuous) laser diode and pulse it? Or does this not produce the same effect as pulsed laser diodes?
At the moment, I am planning for a project involving lasers (yes, I have been lectured on laser safety). I am looking for a cheap way to build a pulsed laser in the near-infrared range. Since laser ...
- 1,299
0
votes
1
answer
139
views
What are laser diode drivers used for
When do you need a laser diode driver to power and pulse a laser diode?
Is it related to the power it needs or the speed of the pulse?
I am looking to use multiple laser diodes which have an output ...
- 113
1
vote
1
answer
1k
views
Driving a butterfly package DFB laser
I want to drive a DFB laser in a type-2, 14-pin butterfly package. The manufacturer has provided limited information on how to bias the laser diode and could not get any information on the reference ...
- 21
1
vote
2
answers
355
views
Laser Diode Feeding
Edit: Laser diode info page
I have a basic question about laser diodes. For a 14-pin butterfly package as shown below. I know that I need to control the current going in to the laser diode, but I don'...
- 96
3
votes
3
answers
3k
views
How to transmit data with a laser beam? [closed]
I am working on a project about data transmission with lasers. The project is very young so I can modify my current planned setup if necessary.
This is the actual planned setup:
Every raspberryPi ...
- 43
0
votes
2
answers
880
views
What are the advantages of pulsed laser
I'm talking about laser diode for engraving/cutting cnc.
As far as I know led or laser diodes are often driven by pulse signals to enhance their performances.
Please note I'm not talking about the ...
- 1,450
2
votes
4
answers
573
views
What communication protocol does this pinout match? DATAP, DATAN, CLKP, CLKN, CLKSEL
I am trying to build a laser diode driver circuit using a part from Analog Devices. (The datasheet is here for your reference: http://www.autex.spb.su/ad/ADN2848.pdf)
It appears that there are 4 data ...
- 31
1
vote
1
answer
318
views
How should I use this laser diode from eBay?
I am new to lasers. I have some 5mW pointers, but thats it. I want to have something more powerful, and I happened to find this 50mW laser diode with driver:
http://pages.ebay.com/link/?nav=item.view&...
- 437
0
votes
2
answers
3k
views
most basic laser diode driver?
Is a simple LM317-based laser diode driver safe for powering a laser diode?
https://www.youtube.com/watch?v=iuMngik0GR8 (the diagram is at 1:37)
I've been told the the proprietary drivers offer some ...
- 331
0
votes
1
answer
283
views
Replacing diode in laser
and I got a question about lasers. I am owning a LDS 40mw green 100mw red, and I wanted to replace the 40mw diode for a 100mw green diode. Does this requires any power supply increase? Basically a 40 ...
- 103
8
votes
2
answers
6k
views
500mw laser diode: What's the point of a driver and will it need a lens to focus?
For a hobby project I recently bought a laser diode with the following specs:
Mitsubishi 645-655nm 350-500mw High-Power Red Laser Diode LPC-836
Power output: CW 380mW
Pulse Power: 570mW
Working ...
- 235