![]() The emulsion and prep were as follows, largely following my typical DCG workflow:ġ1 g gelatin (Superclear 300 bloom, from Amazon) This brings me to a question I have had for a while - when beam exposures are quoted in mW/cm^2, how is this calculated with a beam intensity that is not uniform across the entire plate? Quote for a single point and measure the properties at that point in the finished hologram? The 445 is a commercial ECDL with an asymmetrical beam, but the other two are Sapphires and give excellent even (gaussian) exposure. With that in mind, I have the 445, 488, and 568 all aligned and ready to go. As we know, green is the most visible at equal power. It would seem that 405 would tend to produce great bright green replay under the same conditions. My exposures in standard DCG with the 445 and 488 are easier to make bright gold than anything else, and this represents a rather large redshift from the recording wavelengths. I too suspect 405 is underrated for display work. My table and especially the shutter depends on this so I want to complete it before using the 405. I also do not yet have a dichroic mirror for this wavelength yet (coming soon from ebay) to make it colinear with the other lasers and direct it through the same spatial filter. Attempting to realign it was not immediately successful and I had limited time today so wanted to move on to making emulsion and plates. My 405 nm laser is a homemade ECDL which was operating well at the electronics bench, but became misaligned when bringing it into the laser room. I would usually make more for a weekend session but this is experimental, and I want my thick rain-X plates back to make regular DCGs for sale.
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