Search results

Very nice!

What was wrong with the regassing?

All pictures didn't fit in one post.

Now its time to tell about the choice of the frequency doubling crystal. After several experiments, that included attempts to use lithium niobate, lithium iodate, barium-sodium niobate, I came to the final option of a doubling crystal. A 532nm converter for a chinese YAG tattoo remover proved to...

The getter absorbed hydrogen. Getter is activated from the heat of the discharge in the laser tube.

That is a very cool find! Biggest russian He-Ne laser could do not more than 70 mW on 632 nm multimode.

The AO Q-switch controller went into spectrum analyser case, the lamp power supply went into a NOS rack case of the same width, so I can stack the units one onto another.

So, in the final version this controller is assembled in a rack case from an old spectrum analyser. It consists of the following blocks: the master quartz oscillator, two-stage pre-amplifier, final power amplifier, pulse modulator and power supply, that gives all neccesary voltages for filament...

In this post I'll tell about my DIY AO Q-switch controller. The best result of frequency doubled CW laser is got, when the laser is q-switched, to get high peak power of the beam inside the laser resonator. Frequency doubling efficiency is proportional to the square of the beam power, so...

Copper Vapour Laser is a good choice for that. Loads of power (up to multiple tens of W). But not a "pointer" size.

I think, it's time to tell about my new ackuisitions, as I've been away for a long time. 28) GOS301 Nd"Glass laser head This is a smaller version of the already mentioned GOS1001 laser, that has output energy of 300 J at 1060 nm in a single shot. It contains the Nd:Glass rod that is 30mm in...

At my first experiments I thought that it is enoough to throw a doubling crystal inside the YAG laser and it will be OK and nothing else matters. Unfortunately, no. In the case of a CW or even a QCW laser matters literary everything. To start with, the lamp power supply must give very smooth DC...

It depends on pulse repetiotion rate. It drops quite quickly after 7-8 kHz, maximum value I'd estimate around 10 kW or less in a single pulse. Average beam power is about 500-1000 mW multimode at the moment. Singlemode will be not more than 500 mW.

Ok, I'm back after a long time of absence, as I've been working on this project, and, finally, got something. The green laser that I have now is not "insane" yet, but I find it worth showing here, as it already beats the majority of laser pointers and small chinese lab DPSS modules. I am...

Very cool setup!

Very cool laser, I'd like to have one like this.

I achieved this by using high power fast hydrogen thyratron, which is driven by a smaller thyratron. The master oscillator is built on vacuum tubes. more information is in my CVL thread (Lightsaber copper vapour laser)

Some time ago I visited my fellow glassblower and he made this laser tube for me from fused quartz. It has two side arms for placing copper halide in them an electrodes taken from linear flashlamps. I placed then the copper chloride that had unknown purity and quality. It had already changed...

I have spare mirrors, but firstly I'll try to clean dirty ones.

Today I've loaded this laser tube with lead. The buffer gases are the same, operating temperature is much lower. Optimal PRR is low too. I saw lasing on 722 nm, it is still quite visible. It is a bright red spot with magenta tint. Output power was quite low, possibly some tens of mW. It couldn't...