| MEASUREMENTS AT 10.6 MICROMETER OF DAMAGE THRESHOLD IN GERMANIUM, COPPER, SODIUM CHLORIDE, AND OTHER OPTICAL MATERIALS AT LEVELS UP TO 1010 W/cm2 |
JUL 1976 |
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| Authors:
J. J. Hayden; I. Liberman
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 | We have measured the damage threshold levels in various optical materials useful as mirror surfaces and windows at 10.6 micrometer. Typical values range from .73 J/cm2 for a micro-machined aluminum mirror up to 12.6 J/cm2 for a micro-machined OFHC copper mirror. Materials tested include: ZnSe, conventionally polished copper mirrors, micro-machined aluminum and copper mirrors, uncoated and AR coated NaCl windows, polished germanium flats and tungsten mirrors. Tests have been done ... |
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| OPTICAL PUMPS FOR LASERS--PHASE II. |
FEB 1968 |
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| Authors:
C. H. Church; D. A. Larson; I. Liberman; R. G. Young; L. Armstrong Jr; WESTINGHOUSE RESEARCH LABS PITTSBURGH PA
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| The work covered in this report is separated into three tasks. The goal of Task A is to improve the life of xenon flash lamps when operated under high repetition rates. In Task B, the object is to predict the performance of a cw laser system when pumped with a spectral gas discharge lamp. In Task C, the superiority of the potassium-mercury lamp over the tungsten filament lamp for pumping ... |
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| OPTICAL PUMPS FOR LASERS-PHASE II. |
JUN 1967 |
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| Authors:
C. H. Church; D. A. Larson; I. Liberman; R. G. Young; WESTINGHOUSE RESEARCH LABS PITTSBURGH PA
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| The goal of this research program is to achieve efficient optical pumps for lasers. This second phase may be divided into two tasks: to fabricate spectral additive lamps which will radiate efficiently in an absorption band or bands of Nd:YAG, and to demonstrate the efficiency of the lamps in an appropriately designed laser head. During this quarter lamps having either polycrystalline or single crystal Al2O3 (sapphire) bodies were made and ... |
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| OPTICAL PUMPS FOR LASERS - PHASE II. |
MAR 1967 |
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| Authors:
C. H. Church; D. A. Larson; I. Liberman; R. G. Young; WESTINGHOUSE RESEARCH LABS PITTSBURGH PA
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| The work consisted of the construction and testing of lamps containing different ratios of Na-Hg amalgams i n both PCA and sapphire envelopes and NaI + Hg in quartz envelopes. High resolution spectra were obtained for many of the lamps to determine the effect of loading on the coincidence of the short wavelength wing peak and 5688A line with Nd:YAG absorption bands. Measurements with argon flow demonstrated that the position ... |
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| OPTICAL PUMPS FOR LASERS - PHASE II. |
DEC 1966 |
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| Authors:
C. H. Church; D. A. Larson; I. Liberman; R. G. Young; WESTINGHOUSE RESEARCH LABS PITTSBURGH PA
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| A large number of sodium additive lamps were made and tested at the Lamp Division. Tests include electrical and spectral characteristics as well as some life testing. Data on three Na-Hg lamps in sapphire envelopes, three Na-Hg lamps in PCA envelopes, and eleven NaI-Hg lamps in quartz envelopes are included. The spherical head for coupling energy from the lamp to the rod is analyzed in Appendix A and this head ... |
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| OPTICAL PUMPS FOR LASERS - PHASE II. |
SEP 1966 |
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| Authors:
Charles H. Church; D. A. Larson; I. Liberman; WESTINGHOUSE RESEARCH LABS PITTSBURGH PA
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| The work consisted of the construction and testing of a number of Na-Hg lamps in a polycrystalline aluminum (PCA) envelope. The observed parameters of interest were the lumens/watt and the spectral wavelengths radiated. These parameters were varied by changing the quantities of Na and Hg as well as the noble filler gas. In addition, an oven varied the temperature of the Na-Hg reservoir and the input electrical power was also ... |
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| OPTICAL PUMPS FOR LASERS |
MAY 1966 |
257 pages |
| Authors:
R. Schlecht; C. H. Church; D. A. Larson; L. Gampel; I. Liberman; WESTINGHOUSE RESEARCH LABS PITTSBURGH PA
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 | The continuously operating high pressure mercury discharge has been demonstrated as an effective vehicle for the efficient excitation of intense lines from a number of metals whose radiating excited states are 5 e.v. above the ground state. The metals In, Ga, Tl, Cs and Na introduced into the arc in the form of iodides have been studied in lamps having diameters from 2.6 mm to 22 mm. Spectral distributions and ... |
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