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 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...
I think, it's time to tell about my new ackuisitions, as I've been away for a long time.
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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...