Activity Stream

SELEM is not the same without you, Zak! Look into Amtrak from Richmond to Wilmington, DE. You can do round trip for about $84 (coach flexible fare).

Been 5 years since my last Selem Hoping to make it this year but I'm going to give it a 10% for me :/ Anyone happen to be driving through Richmond on their way? looking at my options to get there as I no longer trust my car for journeys longer than 30 miles LOL long story. Alternatively looking at...

Something different, open to suggestions. Displaser

I’m working a few today, will upload soon. Greg / Displaser

Company is here, and they make more then mirror balls. https://www.nissho-osk.jp/ The circular mirror on that ball makes it a lot easier to do the legal audience scanning calcs, hint, hint . Especillay if you just overfill it, Transfer Functions and ABCD Matrices are the key to Gaussian ...

Wow - those things are *BUILT*. I've only ever seen the styrofoam balls with the square mirrors. Obviously those are much easier to assemble though. Everything about these things is complicated, from the metal forming necessary to get the dome shapes, to the painstaking trimming of the...

I like the hybrid design from Shadow & Lazerjock, but I must admit that I also like the one from MixedGas, as it's a throwback to the original SELEM logo from 2007. Does anyone else have any submissions? Adam

Bump, I edited in more information to my post after tearing down this laser to confirm the coatings on the ND:YAG as well as the mechanism used to adjust the OC, simple but ingenious! I also confirmed the pump diode output power to be close to the claimed amount of power, per the manufacturer. I...

Hello! If someone wants just a single set or laser, just ask. Green: ~400mW 532nm DPSS Red/Blue: 1W 445nm + 360mW 640nm 3mm beam, very low divergency. Best regards, Phillip

I'm in Ohio... I keep a few g120s laying around, if need be. Steve

Hi Steve, Much thanks for all the advice and information, I truly appreciate you spending the time to explain all this! We're located at the University of Toronto in Ontario, Canada. We got this scan head second-hand for our confocal setup and it originally came with the G120DT galvos inside....

CX 660 Cx-660 CX660 General Scanning Manual is attached. Most of the CX family on Ebay will be fixer-uppers, assume you will need a technician to repair it. Find CXs with DB15 connectors on the back, unless your galvo pair has the long outdated blue circular mini connectors, in which case...

Technoroam's G120 page. http://www.technoroam.sk/lasershow/ If you have to build one type pf g120 amplifier, build this: http://www.technoroam.sk/lasershow/downloads/G120Amp_SCH.pdf

Derived feedback amplifier for bench testing G120, Damping only, does not use position sensor, included as an aid to understanding for a tech. AKA GSI A-102 or A-106. A +V B

DB15M connector Pin Number Wire Colour Signal Description 1 Red

Both of those amplifers you mention use the same motherboard... There are a series of low cost parts changed from unit to unit, and the rear connectors may be different, but the internals are all fitted the same with through hole components. Three digit part number is standard, four or more...

That, and the fact that the cost is typically an order of magnitude (or more) less per mirror!

Less chance of getting lung cancer with silicon carbide, right? :) I'm sure that would also work, but it would make the optical path for the IR feedback a lot more complicated. (Seems like the scanner mounting block itself would be in the way.) Picking off the IR after the scanners is...

Cool. Glad you read right. Full beam ahead! Laser entertainment is certainly enlightening. You've pulled off an amazing, historic resurrection with great support.

Yes, I read that as a joke. That's one of my favorite kinds of humor: a comic intentional misunderstanding within an interesting historical context. The developments of the past few weeks have brought the content to impressive new psychedelic heights. My heart is burning to make it possible for...

The 3D implementation should be quite an asset. Re: Juke Box quarter port Thanks for the thoughtful reply...but I do want you to know that I was joking around. Today, counting for inflation it would have to be $5 bills. :D:D

I did that to a past logo before. Good idea. Think we got a winner?

I like this one. "I enhanced it" slightly. I added more lines to total 17. Get it?

How about making the mirrors double sided and bouncing the IR off the back and employing 2 IR sensors for each mirror?

How about these?

Mixedgas is in the house...