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Put a white phosp thing in the front so it doubles as a flashlight

Want some fun take the module apart and try using a higher power pump diode. You’ll hit a thermal limit but that will do the trick. Alignment can be difficult. A lot of these use crystals with mirrors on the end of the crystal so they are aligned to start.

I have a little ocean optics box as well. Pm me if you are interested.

Think about it if you could make a megawatt light solid that delivered its payload on contact…..photon torpedo!

If the camera is right tha looks about right with just a hint of green. Like a mostly ripe lemon. Mine came in at 573nm as advertised. This was on a Andor spec so I know it’s right.

I love the yellow I got from him.

Message me the costs and maybe we can cost share and make it happen.

Any news

I like first contact. Works no fuss no liquids.

I don’t have an opa but you’re right. What we are doing is looking for resonances in materials so we sweep a narrow wavelength tighter better until we find shg. Note it and move on. Then come back and narrow in as tight as we can to peak it. We expect uw of shg from this or nothing at all...

Yea I tried that. Works but not enough power. I think I’m stuck with the dye laser to get enough tunable power to do shg in the visible.

Anyone know a reasonable cost source for structured media for continuum? I need to pump it to make a continuum but I need enough power after the shift to shg to the UV. Right now I have a tisaph 980-800. So I can reach 490-400. But I’d like to get 600-400 but still have enough power for shg...

But the edge is perfect no? See speed doesn’t matter for this experiment as your comparing the phase of two pulses. So slow is fine. Actually CW is fine in an interferometer. Fringes. Getting the path length right is most important. Thanks for the explaination. I never need a chopper for...

More….why it blocks or it doesn’t. I have not used one for decades. I’d think it be instant on instant off. I however am assuming the speed remains constant.the blades are not bent, ect…. Now thinking of it you’d want to place it at the center of a set of lens too for the smallest spot size...

What I’m saying is you don’t need to chop that fast. You just want a pulse train with shape edges.

Measure the absorbance of the lens…..it might be eating your power.

That’s not a bad thought to use a chopper. Reason is the rise and fall of the diode will then be perfect since it is just blocked. The speed of the chop doesn’t need to be that fast. You just are measuring the phase difference between the pulses which is relatively easy. You could eliminate...

I use to put 4 1n4001 in series for the voltage drop and a 100 ohm resistor in series with that. I was simulating the 1 w blues of the time. https://laserpointerforums.com/threads/how-to-make-a-selectable-dummy-load-very-in-depth.64585/

Les is VERY reliable. This is a very well known trick. I literally just commented this before seeing this on another thread. So the driver is pulsed and it puts an extremely high current into the diode for a very short time. It would be a dangerous and pretty useless device for most of you...

In pulse mode easily in the kw. Ns pulses that is. I’d like to see this down around 420nm to drive continuum lasers.