My friend has made a working laser that has the following intellectual properties: 1) the more learned the individual is regarding laser...

My friend has made a working laser that has the following intellectual properties: 1) the more learned the individual is regarding laser construction and operation, the more confused and hostile they are regarding this new laser. 2) The less the individual knows about lasers, the more acceptable the laser is. This laser has absolutely *NO* optics, NO mirrors, no lenses; none, na...

I have this circuit driving a pulsed laser. I want to compute the energy dumped into the laser and the energy stored in the power...

I have this circuit driving a pulsed laser. I want to compute the energy dumped into the laser and the energy stored in the power supply capacitors. The ballpark is 120 amps into a 20 volt laser for a few hundred microseconds. What I did was create a "B" behavioral current source whose equation is I = V(LASER) * I(LASER) which represents power, and dump that into a 1 farad cap. The...

I saw a bug on my ceiling... Which reminded me of a utube video of a spider chasing after a laser spot. So I get the laser pointer(actually a...

I saw a bug on my ceiling... Which reminded me of a utube video of a spider chasing after a laser spot. So I get the laser pointer(actually a laser distance measurement tool) and aim it near the bug. It flies! I don't like flies and when it relanded on the ceiling I decided to do a less friendly test.. Laser blinding! muhahahhaha.... :P I rested the laser spot all over the fly. A good 30...

I heard about this on a Science 360 broadcast this morning. A laser pointed at a graphene sponge propels it forward. (not quite the same as...

I heard about this on a Science 360 broadcast this morning. A laser pointed at a graphene sponge propels it forward. (not quite the same as skysail) The researchers have several theories as to why. They do note the sponge emits electrons after being charged with the laser. My read says the electrons are only emitted from one side, the side the laser hits. Hmm? Also works with focused sunli...

Some Swiss-army laser-projector box, 2.5 watts. At 2 grand it isn't cheap but in the 90s a setup like this for e.g. planetarium laser show...

Some Swiss-army laser-projector box, 2.5 watts. At 2 grand it isn't cheap but in the 90s a setup like this for e.g. planetarium laser show would've probably cost tens of thousands and definitely not luggable with one hand

Hi all, after tribulations with HV opamps and leaky inductors, my diode laser seems to be happy again. Here's a scan of the laser through a...

Hi all, after tribulations with HV opamps and leaky inductors, my diode laser seems to be happy again. Here's a scan of the laser through a Fabry-Perot confocal cavity. (F-P FSR ~ 380 MHz, finesse > 100.) https://www.dropbox.com/s/6zpgdfs6cqus7ig/TEK0015.BMP?dl=0 I put 10 MHz side bands on the laser to give a scale. Looking at the 'scope shot would I be safe in claiming 1 MHz (or bette

I tore up a computer mouse to get my grubby little paws on a laser. Only.. I'm not sure it's a laser. Apart from testing the output for...

I tore up a computer mouse to get my grubby little paws on a laser. Only.. I'm not sure it's a laser. Apart from testing the output for coherence, is there a way to tell a laser diode from a light-emitting diode? Other than that, how do you drive these things? Is there some Internet- accessible resource where this is explained? Usually, I begin my crawl with Wikipedia, but on the subj...

Laser locking (control loops with two feedback paths.) So I finally had a user ask about side locking our diode laser. (That=92s where you...

Laser locking (control loops with two feedback paths.) So I finally had a user ask about side locking our diode laser. (That=92s where you lock the frequency to the side of an absorption feature.) Now, you can change the laser frequency in two ways. There=92s a piezo stack that changes the angle of a diffraction grating. And you can change the laser current. The electronics is all set u...

Laser pulses every 100 ps Did they discover the microwave cavity mixer? ...

Laser pulses every 100 ps Did they discover the microwave cavity mixer? https://www.sciencedaily.com/releases/2018/09/180927145355.htm 'quote In contrast, NIST's new electro-optic laser imposes microwave electronic vibrations on a continuouswave laser operating at optical frequencies, effectively carving pulses into the light. ' Now here meets the frequency domain the time domain I'...

I have a laser diode that is cooled by a fan and a heat sink. I have a small TEC lying around and I would like to integrate that to the laser...

I have a laser diode that is cooled by a fan and a heat sink. I have a small TEC lying around and I would like to integrate that to the laser diode head. How do I go about controlling the voltage supply to maintain a stable temperature. Thanks for you valuable input

So we just took delivery of our new Chinese fiber laser (for etching and maybe light-duty cutting operations). I believe it is a 50-watt...

So we just took delivery of our new Chinese fiber laser (for etching and maybe light-duty cutting operations). I believe it is a 50-watt unit. We got it going and was able to mark a few nameplates, etc... Of course, all the literature is in Chinese (and even some of the software). My question is: What does "TC" mean within the context of "laser on", "laser off", "polygon end",

Hi, Here is an upcoming metal 3D printer that uses a laser for melting metal powder layer by...

Hi, Here is an upcoming metal 3D printer that uses a laser for melting metal powder layer by layer: http://techcrunch.com/2014/07/18/matterfab/ Any idea on what type or even part# of laser this uses? There are a couple spots in the video with a close up of it, 5minutes in. cheers, Jamie

One of the guys did a flea market run this weekend. He knew I was looking around for a source for cheap laser pointer/toys, so I could strip...

One of the guys did a flea market run this weekend. He knew I was looking around for a source for cheap laser pointer/toys, so I could strip the lasers out of them.. He found me a deal. 15 Laser pointer-Animal toys, for $20 bucks. These are key chain things with end caps you can change project images instead if just a point. The 3 button cells in each package alone, is worth more...

Using 12bit DAC, I would like to have 32 microsteps. I have mounted a laser on the shaft so I can see the laser beam on my wall, where I have...

Using 12bit DAC, I would like to have 32 microsteps. I have mounted a laser on the shaft so I can see the laser beam on my wall, where I have 32 grid lines. I've experimented, and it goes pretty well, all 32 steps are more or less on grid - when I go right. But when I turn back left, the laser dot moves fast, then slow, then fast again - not on grid. I haven't found anything on the ...

Well here is one: Use a selenium-coated laser printer drum pretty much as intended. Impart a charge on it's surface, fire laser to erase...

Well here is one: Use a selenium-coated laser printer drum pretty much as intended. Impart a charge on it's surface, fire laser to erase charge for a 0 or leave it for a 1, then use some kind of electrometer to read the bit later. Recycle this back to the laser for recirculating memory. I'm wondering if there is any way to make a large scale CCD shift-register memory which can be made a...

We make a lot of electro-optical things that are packaged in little extruded boxes. We do the artwork for, and order, polycarb stickers to go...

We make a lot of electro-optical things that are packaged in little extruded boxes. We do the artwork for, and order, polycarb stickers to go on the top of the box. That works but has some overhead. My mechanical guy has a 50 watt CO2 laser at home and did this: https://www.dropbox.com/s/94hadhmjzxzt9ec/J734_Blue_Box.JPG?raw=1 Basically the laser blasted off the blue anodize to make t...

For one of our instruments, Diode laser spectroscopy, (http:// www.teachspin.com/instruments/diode_laser/index.shtml) We use a CCD camera and...

For one of our instruments, Diode laser spectroscopy, (http:// www.teachspin.com/instruments/diode_laser/index.shtml) We use a CCD camera and little TV to image the NIR laser spot and observe the Rubidium fluorescence. (Used to tune the laser to the correct wavelength.) So we didn=92t buy a lifetime supply of either the cameras or TVs and now they are both disappearing. (about a year...

Rangefinder Laser 1200S Rangefinder Laser 1200S features: Wide range of temperature tolerance: -10=BAC to +50=BAC Selection from 2 measurement...

Rangefinder Laser 1200S Rangefinder Laser 1200S features: Wide range of temperature tolerance: -10=BAC to +50=BAC Selection from 2 measurement modes (Target Priority Switch System): First Target.... http://www.info-world-mania.com/

There is a type of bike light gizmo than uses a laser to draw a line (actually two, two lines) on the road surface behind the bicycle. How...

There is a type of bike light gizmo than uses a laser to draw a line (actually two, two lines) on the road surface behind the bicycle. How safe is this to look directly at?

down spy drones and fast boats with a Laser. http://www.wired.com/dangerroom/2013/04/laser-warfare-system/ with video. ...

down spy drones and fast boats with a Laser. http://www.wired.com/dangerroom/2013/04/laser-warfare-system/ with video. Mikek