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Heater temperature is really critical, affecting output power and mode structure strongly. Any fluctuation also dramatically reduces effective coherence lenght, even if SLM is maintained. The doubler heater is actually PTC (positive thermal coeficient thermistor), the PL530 is really similar to Sapp...

Cyanine CD produced by Taio Yuden is the right choice. Unfortunately the record layer contains more than cyanine dyes (some stabilizers), which seems to desensitize the AgX somewhat. Use extract from blank one.
https://www.holographyforum.org/forum/v ... ?f=9&t=874

I'm sorry for that, I will correct it. Isocyanine is 1,1′-Diethyl-2,2′-cyanine iodide. Other synonym: 1-Ethyl-2-[(1-ethyl-2(1H)-quinolinylidene)methyl]quinolinium iodide, Decynium 22, Pseudocyanine iodide, Pseudoisocyanine iodide. It is very strong sensitising dye for green 532nm, does not cause des...

Plasma cleaning is really effective. The glass is placed on grounded metal sheet and scaned by X-Y ploter to achieve large surface. The plasma is created between the glass and thin insulator with burried electrode (defunct peltier cooler) connected to HV from induction coil. IMG_... is an image of w...

Grayham (and all): See new topic SilverX... there is attached formula. Valery: Thanks for reply. When I dilute emulsion with gelatine, it is possible to develop thicker layer by GP2, selectivity somewhat improved, but decreased in difraction efficiency. Good sublayer is really needed even for GP2. С...

Finally, I have to compile formula for preparation of ultra fine grain silver halide emulsion for color holography, based on Silver Cross project. Any comments, experiments and improvements are greatly welcomed and will be implemented in future revisions of the attached document. Despite of really g...

Adhesion to substrate is main problem during processing. Archival quality is connected mainly with type of developement and namely with final wash. GP-2 followed by fix and properly washed is superior for long term stability, similar as B&W photography. Unfortunately, this chemistry cannot be us...

Currently I'm preparing detailed formula of my SilverX color holographic emulsion to publish it. Based on Silver Cross project, with several improvements, tips and tricks. Results are really good, quite repetable with minor variations batch to batch.

There is an article about predecessor of this laser, dealing with effect of various intracavity elements, namely doubling crystals and filters. https://www.researchgate.net/publication/225452652_Efficient_green_generation_by_intracavity_frequency_doubling_of_an_optically_pumped_semiconductor_disk_la...

You are right, the blue part is most complicated. If eye sensitivity is taken in to account, 532nm frequency doubled Nd:YAG/YVO (or 530 OPSL) is perfect. I found, that 633nm HeNe is somewhat better than 640nm diode, color rendition is indistinguishable by my eye, but eye is little bit more sensitive...