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I'll just agree with what most other comments are saying. From a practical perspective essentially everything would have to be swapped for it to work, and at that point you are just building a HeNe from scratch. And on the aspect of power differential between HeNe and CO2, the difference in...

welcome officially to LPF. Best luck in your laser building attempts. There is plenty of low cost, medium power diodes to start with. Definitely smart to start with lower power lasers to get accustom to using lasers safely and not risking $$$ if anything breaks.

I don't know, have you ever actually checked? :ROFLMAO::ROFLMAO::ROFLMAO: Is this supposed to be an computer generated poem. Fine fellows, I say, shall we return replies like a retroreflector on the moon. ❓

For what you are doing I would stick with reading the pinouts from the datasheets. That way there is no guesswork. If you want to charge LI-ion batteries inside the host then more work will need to be done. Direct charging would be fairly dangerous if the voltage is not adequately regulated...

Thanks for posting. Glad you put in the subtitles :D I'm also curious what software you used for the simulation. Those modules deffinitely put out a lot of power, to bad the beam quality leaves much to be desired. I assume the duty cyle is infinite and is mainly determined by the batteries?

Naturally, having the datasheet or pinout is preferable. But if you apply a low voltage you can get some LED emission at lower current than threshold, a few times I've used that to confirm that my diode is hooked up correctly. As long as the voltage is below the reverse breakdown it should be...

Maybe the ML101U29 or LPC826/LPC840?

Part of the answer depends on your skill level, and what specifically you are looking for. If you are simply looking for a "pretty" laser, I would suggest a lower power, unique wavelength laser. My personal choice for someone newer to lasers and laser safety would be single mode 488nm or 505nm...

Farbe2, Firstly congratulations on such nice results. I had previously started to a similar project, but at a much lower quality and much more MacGyvered. I never finished it anyway. Have you thought about adding the external grating to tune the wavelength a bit lower?

Your questions are difficult to understand. Are you inquiring about this issue for a particular purpose, or just curious? I imagine that most LED screens are not made with laser pointers for presentations in mind. As far as safety goes, simply using a <5mW pointer (520nm/532nm for best...

I'll add my much belated greeting in here as well. _Wim_ , If you ever plan to do a real project that needs the B&W-tech 473 units let me know. I've got a some I might let go for a good cause. It sounds like you have a great start with what lasers you've got and your projects.

I would imagine that there are sensors for arduino to measure distance using laser. However, I don't know if you can use a 532nm dpss laser for this, as the doubling/nonlinear process might cause issues. What are the distance range are you looking to measure? Are you thinking to use the 532nm...

My first thought would be that it is slightly misaligned or something non-normal with the optics. It looks like the 488 output is normal though, is the 488 centered to the other light circles, are the other lights smooth/even? I can't say I have much of an idea of what it could be. When you say...

It is no doubt that inevitable yellow laser diodes will eventually become a thing, but the question is when. I believe there has been a number of older papers also showing how to make yellow or yellow-green diodes. One thing to consider is that simply making a laser diode of one wavelength in...

I will add, there is a distinct difference between laser weapons that blind (not to be confused with laser dazzlers, which do not cause damage) or that cause thermal effects. https://en.wikipedia.org/wiki/Convention_on_Certain_Conventional_Weapons

What is your goal? Buying one is usually cheaper than making one. The main reason to make one is to customize it or as a learning experience. I made a simple projector nearly from scratch for a project, so I can answer some questions on aspects of what I did.

I have also done some experimenting with this but did not finish it as my design was not looking promising. One issues I ran into was creating the hermetic seal for the diode. The main issue is with the TEC inefficiency and determining the number and power of the TEC units in a stack to get the...

Welcome to LPF! Have fun browsing LPF and stay safe.

From memory, the AMC7135 have fairly low voltage dropout. If you could get a single driver to give enough voltage to run them in series, would it be possible to simply use a mosfet to switch on another set resistor to get two power levels? What is the max current you are planning on running...

I've used the MicroFlex V5 for a 488nm diode and it worked fine. From what I've heard, it is a good, possibly the best, driver for sensitive diodes too.