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The "G7 focusing lens" that comes with your heatsink should be able to collimate your laser diode if installed properly. A common mistake people will make is to install the lens backwards. If you want the focal point to be closer to the aperture of the laser, use a lens with a shorter focal...

It seems like you're getting more power out of yours than I am. Are you able to quantify how much of the output is IR? I don't have the resolution with my LPM to measure it but perhaps you can get it from the relative intensity on the spectrograph. That one is an early prototype for optic and...

This is a good suggestion. I made a thread for these here: https://laserpointerforums.com/threads/the-unexpected-593-5.110784/

Who would have guessed an extremely rare wavelength would just magically appear within reach? Here's a place to compile our information and photos. I'll start: I got a couple of these 593.5 nm modules. I plan to make a special host but for now I slapped one into a chrome pen (the quick and easy...

Well I can tell you now that I won't be doing any destructive testing or even pushing the limits. I like to run LDs at or below their specification to get the best out of them (in terms of lifetime and color). I can put it through my diffraction grating spectrometer, however, and report the...

Hey, I did get the 532 nm diode. I haven't been able to test it yet - I want to machine a copper heatsink for it that doesn't require press-fitting the diode (so if I want to move it, I don't have to risk destroying it). I may get to it over the next weekend. Is there anything about it you're...

It's cool that after all these years, DPSS 473 nm is still so rare. Did you end up soldering the driver directly to the diode? I did so for my 589 nm CNI module and it was scary just touching it with the iron...

Really nice! 561 nm is a really interesting color. I measured mine at 561 nm but I suspect its making a wide emission band based on the testing I've done. I need to test it with a more precise spectrometer some day. I've got a 570 nm module with a dead pump diode. I was just doing some work on...

If wavelength is much more important than power, it may be easier to find what you're looking for. ThorLabs has this 650 nm laser diode, rated for 7 mW at less than $15USD: https://www.thorlabs.us/thorproduct.cfm?partnumber=L650P007 Buying from a supplier like ThorLabs is your best bet for...

To add on to Steve's note that the longer focal length inherently provides better divergence, it's also important that the diameter of the lens is large enough to capture the laser output. A longer focal length lens must be positioned father from the light source in order to produce a parallel...

The lid is made from brass. I'm not currently set up to anodize but when I get a bigger workspace I'd like to try anodizing small parts.

Thanks for the comments! It was a lot of work so it's nice to show off and get some approval.

I've had a 589 nm CNI module for a few years. It's an amazing little laser and although it's output power is relatively low at ~30 mW, the color is one of my favorites. A couple years ago I purchased a manual milling machine and have spent much of my free time learning how to use it. I have...

I would suggest browsing Sam's Laser FAQ. https://www.repairfaq.org/sam/lasercds.htm#cdstoc I don't know with certainty that you will find what you're looking for but it's a good place to start and information sources are cited. If you have access to academic journals, through a university VPN...

Based on the data sheet provided, divergence looks slightly better than the 520 and 525 nm diodes and in theory I should be able to get a more symmetrical beam with a pair of stock cylinder lenses. We shall see... I only have a low-tech diffraction grating spectrometer that won't be able to...

I've had my eye on the supposed 2 W 525 nm diodes amd the 532 nm diodes for a while. Decided to get one of the 532s and set it up with some fancy optics. I'm really looking forward to it since this will be the brightest diode available in this format. I'll report back when it's up and running...

I see - that makes more sense. In that case, it will not be possible practical to apply beam correction to the combined RGB output and get a good result. The reason is that each laser component (presumably red, green, and blue diodes) will have different divergence angles and different...

Cylindrical lenses or anamorphic prisms can improve the beam but it will not be "cheap" and it will not necessarily reduce the beam diameter at the mirror. Beam correction is meant to make the perpendicular and parallel axes of a laser's output diverge at the same angle to produce a symmetrical...

Those "air-jet" coolers from Frore seem cool but only time will tell if they can deliver a viable product. For the duty cycle you describe, optimized passive cooling seems sufficient. If you want to build a proof of concept for miniature active cooling, I'm 100% supportive but for now we are...

It should just be stuck on with double-sided tape. Tape over the housing with a couple layers of masking tape (to protect the chrome finish) and use a knife to pry the button up carefully. It should come right off without much effort. It can be glued or taped back on later.