Control of intensity distribution and spectra through resonator design for the SABLE propagation experiments

Patrick J. Pomphrey Jr.; Donald L. Bullock; Gerald B. Rohles; Daniel G. Fouche; Jeffrey P. Dansereau; Eric L. Schafer

doi:10.1117/12.58980

1 May 1992 Control of intensity distribution and spectra through resonator design for the SABLE propagation experiments

Patrick J. Pomphrey Jr., Donald L. Bullock, Gerald B. Rohles, Daniel G. Fouche, Jeffrey P. Dansereau, Eric L. Schafer

Proceedings Volume 1628, Intense Laser Beams; (1992) https://doi.org/10.1117/12.58980
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Characterization of atmospheric turbulence and thermal blooming for high energy laser propagation has been conducted for the Scaled Atmospheric Blooming Experiment (SABLE) under controlled experimental conditions. To enhance thermal blooming with a high brightness, moderate power laser beam, a hydrogen fluoride (HF) chemical laser, producing six major lines, P1(7), P1(8), P1(9), P2(7), P2(8), and P2(9), was utilized. This paper summarizes design options and the design and operation of an X-folding scheme and the resulting quad-pass resonator (QPR), which produced a spectrum shift of 2 J-lines, a near-field irradiance distribution that was more uniform along the flow direction, had less line-to-line variation in near-field irradiance distribution, and produced twice the far-field power after atmospheric propagation, when compared to a more conventional double-pass resonator (DPR).

Citation Download Citation

Patrick J. Pomphrey Jr., Donald L. Bullock, Gerald B. Rohles, Daniel G. Fouche, Jeffrey P. Dansereau, and Eric L. Schafer "Control of intensity distribution and spectra through resonator design for the SABLE propagation experiments", Proc. SPIE 1628, Intense Laser Beams, (1 May 1992); https://doi.org/10.1117/12.58980

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