Incandescent Lamps or Other Light Sources to Pump Dye Laser?
. For R6G in a cell that has 10 cm pumped length, with a “perfect” max-ref rear reflector and a highly reflective OC (optimized for low threshold rather than output), you find that the dye has to absorb 10 to 20 kW per cubic centimeter during the pulse, in order to reach threshold. Note that I said that R6G takes 10 to 20 kW per cc, which is higher than what I arrived at earlier. There’s a reason for that: When I redid the calculation few months ago, I used the actual bandwidth as shown on an excellent Web site: PhotochemCAD Spectra by Category. So the power I got is higher because I underestimated the bandwidth a few years ago. If you translate this back to actual electrical power in the lamp it comes to about 50 MWE, give or take. Depends on how efficient the lamp is, how much of its output is at wavelengths that the dye can absorb, and how well the light is coupled from the lamp into the dye cell. (Also on how much dirt there is in the dye solution and on the windows and mirrors, bu
