Optical Diagnostics Of CO2 Laser Fusion Targets Using Backscattered Light

D. E. Casperson

doi:10.1117/12.932087

30 December 1981 Optical Diagnostics Of CO₂ Laser Fusion Targets Using Backscattered Light

D. E. Casperson

Proceedings Volume 0288, Los Alamos Conf on Optics '81; (1981) https://doi.org/10.1117/12.932087
Event: Los Alamos Conference on Optics, 1981, Los Alamos, United States

Abstract

With the f/2.4 focusing optics on one of the eight Helios CO₂ laser beam lines, direct backscattered light from a variety of glass microballoon targets has been observed. The quantities. that have been measured include: (1) the total backscattered energy; (2) relative amplitudes of the backscattered fundamental and low harmonics (n=1, 2, 3) of the 10.6 μm incident light; (3) the 3/2 harmonic emission from a double pulse backscatter experiment; (4) the temporally resolved 10.6 pm light using a fast pyroelectric detector and a Los Alamos 5-GHz oscilloscope; and (5) the time-integrated spectrally resolved fundamental using a 3/40meter spectrometer and a high resolution pyroelectric detector array (resolution ≈ 40 Å at 10.6 μm). The suitability of these diagnostics for evaluating the CO₂ laser plasma in terms of stimulated scattering processes, plasma density gradients, velocity of the critical surface, etc., is discussed.

Citation Download Citation

D. E. Casperson "Optical Diagnostics Of CO₂ Laser Fusion Targets Using Backscattered Light", Proc. SPIE 0288, Los Alamos Conf on Optics '81, (30 December 1981); https://doi.org/10.1117/12.932087

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