Research on solar pumped liquid lasers

A solar pumped liquid laser that can be scaled up to high power (10Mw CW) for space applications was developed. Liquid lasers have the inherent advantage over gases in that they provide much higher lasant densities and thus high power densities. Liquids also have inherent advantages over solids in that they have much higher damage thresholds and are much cheaper to produce for large scale applications. Among the liquid laser media that are potential candidates for solar pumping, the POC13:Nd(3+):ZrC14 liquid was chosen for its high intrinsic efficiency as well as its relatively good stability against decomposition due to protic contamination. The development and testing of the laser liquid and the development of a large solar concentrator to pump the laser was emphasized. The procedure to manufacture the laser liquid must include diagnostic tests of the solvent purity (from protic contamination) at various stages in the production process

Research on solar pumped liquid lasers

A solar pumped liquid laser that can be scaled up to high power (10 mW CW) for space applications was developed. Liquid lasers have the advantage over gases in that they provide much higher lasant densities and thus high-power densities. Liquids also have advantages over solids in that they have much higher damage thresholds and are much cheaper to produce for large scale applications. Among the liquid laser media that are potential candidates for solar pumping, the POC13: Nd sup 3+:ZrC14 liquid was chosen for its high intrinsic efficiency and its relatively good stability against decomposition due to protic contamination. The development of a manufacturing procedure and performance testing of the laser, liquid and the development of an inexpensive large solar concentrator to pump the laser are examined

SPECTRA OF AFTERGLOWS FROM NITROGEN-OXYGEN MIXTURES

Author Institution: National Bureau of Standards“A systematic survey has been made of the spectra of the afterglows resulting from electric discharges in mixtures of nitrogen and oxygen. The spectra have been photographed for mixtures ranging from 100% nitrogen to 100% oxygen, pressures from 1 to 5 mm, flow rates from 2 to $20 cm^{-1}$/sec, and as a function of time after the discharge. The spectrum range covered is from 3000 to 11,000 A, making use of both a prism spectrograph (f/4) and a grating spectrograph (f/0.8). Curves have been prepared to show the relative variations of the individual spectral features as function of the various parameters.