Recent content by Dirac

Yup same exact case to the laser except you have a real keyswitch and I have a 3 pin keyswitch (i.e. just presses in and doenst turn). I love the case on it so far :-D

I've seen those around. Im only stuck with my iPhone because im in my lab at work otherwise I would use my DSLR at home (assuming I ever charge it). Speaking of which heres a fun reverse macro of a snowflake from all the snow thats been piled on me lately...

neg down towards the spring like any normal person would do in a flashlight/laser that came with no instructions:-/. And yes I just checked the diode. Its only use now is to keep the hole in the heatsinc company. And nope I dont have to be a physicist to know they are dead but you would be...

660nm 200mw Focusable Waterproof Red Laser Torch - $50.99 : Laserlands and this is about as clear as it gets at the moment. I can see if my SLR is charged enough for a photo when I go home but for the moment the iPhone is all I have in lab. stupid long focal length phone

Its possible although a resistor is all of a few cents to check if she doesnt get back to me. And if I buy a new driver and that doesnt work I can just buy a new diode for 20-30 bux as I already have the host.

So I got a new laser in from laserlands the other day, placed the batter in (correct direction) and nothing. So I opened it up and looked down the tube and smelled something wrong (Im an experimental physicist so I have learned the smell of bad electronics, never a happy day). I emailed Mary...

No its like here is a laser thats 100mW when its new but over time as the batteries die you are lucky to get 15mW but we are going to sell it as 100mW (because thats what it puts out). The batteries hold a theoretical capacity of x mAh but because of the laws of physics the actual number is...

Fixed the youtube. I'll look up the post to embed in a bit but for now I added links.

So I figured I would review my new toy... (I applogize for the crappy photos my SLR is dead and I misplaced the charger :( so I had to use my iPhone) I ordered: 100mw 532nm Focusable Torch - $72.00 : Laserlands but appears I actually received Titans-100 Adjustable 100mW 532nm Laser Torch -...

Oh I totally understand! I would much rather be sans batteries and actually get my lasers than them be seized. I got the batteries I ordered in today and will be posting videos and reviews soon. Sorry larry I would have ordered from you but as soon as I saw the first link and everything...

So I got my lasers in today from laserlands. But I was a moron and didn't order batteries from them (figured incorrectly that they would be supplied since they were in the photos of the product.) Thus I drove up to the specialty battery store down the road and asked if they carried the 18650...

What sort of resolution are you looking for? sub nm?5 nm?etc Typical lab grade laser measurement tools typically use "newton's rings" as an interference pattern to read their laser frequencies. This method is only limited by the accuracy of your measurement of the curvature of the lens and...

Focusing Beyond the Diffraction Limit with Far-Field Time Reversal -- Lerosey et al. 315 (5815): 1120 -- Science ScienceDirect - Optics Communications : Propagation and focusing of Gaussian laser beams beyond conventional diffraction limit Science paper using microwaves (if you dont have...

There are actually a few papers in the recent years where people are able to focus the beam down below the diffraction limit using interference techniques and some nano scale electro optics. I can possibly look up some references for you if you wish. @ the OP: One of the above posters is...

I generally figured it will be a long shot that people would be interested in a new poster. I tend to lurk a bit on forums before I join or post. I figured that a community with great laser enthusiasts as this might like to see what I have to offer in the way of goods while I build up rep...