Recent content by whysoserious11311

50-100mW, occasionally up to 150mW; are generally the power thresholds for many microscopy techniques requiring fluorescence excitation. Power output is not always for a focused beam, so realistically by the time it becomes highly collimated over a large area the mW/cm^2 is much less - hence the...

I am confused. The highlighted text in your original message is a contradiction. Are you using the phrase "like a PEQ" to simply refer to any style of infrared lasers? ATPIAL / PEQ-15 -> Advanced Target Pointer Illuminating Laser made by L3 Harris. "Build out the lasers"? That's what a PEQ...

Alright all you laser historians & experts: I recently stumbled across an excerpt from Japan's National Museum of Nature and Science - Tokyo that gives mention to a Argon Helium Neon gas laser produced in 1984. Officially it reads "first ever double laser system", not triple, but I think that...

Another one circa ~ 2008/2009. Back when DealeXtreme had decent items for sale. 50 mW DPSS 532 nm. The only reason I have kept it all these years is the fact it has been the only pre-built laser from overseas that actually spec'd exactly what it said it would. Last time I checked it was 50 +/-...

How much do you want to spend? LOL. The obvious choice would be CO2, followed by 1032 Nd:YAG. If the material you are working with responds better to UV light then you would just select the third harmonic from the Nd:YAG via frequency conversion. There is nothing wrong with 405nm, per say, but...

IIRC, In years past, eBay would quickly take down listings for lasers above 5mw. Might have just been for pointers but I remember for a long time you wouldn't see a power rating listed in the title. They seem to have relaxed that policy in the last 5 or so years due to the growing number of...

You can build and compile Micro-Manager on the RasPi and automate image captures -> then you can script ImageJ to pull those files automatically. It will be a delayed "real-time" image acquisition but it should work. In my opinion, at that point you might as well ditch the RasPi + Pi cam in...

Thank you very much for the detailed responses. I just purchased the ARRL RF handbook, figured its best to learn more before throwing money at something else. Next will be a quality spectrum analyzer. In your diagram what exactly is the driver you had in there? With the proper frequency and...

I have a G&H - AOTF 2885-04, max output with 8 simultaneous channels is 3 W. Less than 375 mW per channel. What I want to accomplish: be able to adjust a broad spectrum's FWHM to some specified range - wider than driving it with a single frequency. I know there are two ways, multiple...

Unless you need extremely precise measurements, i.e. interferometry and spectroscopy, or a situationally specific corrected beam for yet another precise task - there is no difference to a bare diode and one with a glass window. Once you start needing to factor in Strehl Ratio's and aberration...

I have done a bit more research, but nothing concrete yet. I suspect there are two or three different methods to accomplish my original question. When studying commercially available drivers, there are a number of different manufacturers that sell a multichannel driver with X number of channels...

If you are willing to go down the route of using SMD's something like a battery operated latching power switch would work. Sorry cant post links yet but if you search what is italicized; mosaic-industries has a nice schematic and description. You would need to fine tune some values but with a...

I am ultimately trying to control an output spectrum's FWHM via an AOTF, i.e. a tunable bandpass filter. This is not for a laser show / projector system, but posting in this section seemed like the correct place to ask a few questions. Out of my comfort zone of knowledge, so please correct me...

I've had some experience with Twyman-Green setups, but nothing substantial. Currently in the midst of trying to get a Fizeau interferometer to work, which as it turns out, is more difficult than I anticipated. Quite a balancing act between precision and brute force via math.

The brand of laser module doesn't matter all that much, but I was making sure it wasn't some cheap no-name Chinese module because it would have likely been the root of all your problems. Changing the temp of the crystal also shouldn't do much; but if you see something drastic it would point...