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Publication Citation: Reflective attenuator for high energy laser measurements

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Author(s): John H. Lehman; David J. Livigni; Xiaoyu X. Li; Christopher L. Cromer; Marla L. Dowell;
Title: Reflective attenuator for high energy laser measurements
Published: June 20, 2008
Abstract: A high-energy laser attenuator in the range of 250 mJ (20 nsec pulse width, 10 Hz repetition rate, 1064 nm wavelength) is described. The optical elements which constitute the attenuator are mirrors with relatively low reflectance, oriented at 45° angle of incidence. By combining three pairs of mirrors, the incoming radiation is colinear and has the same polarization orientation as the exit. We present damage testing and polarization-dependent reflectance measurements for 1064 nm wavelength laser light at 45° angle of incidence for molybdenum, silicon carbide and copper mirrors. A six element, 74 times (18 dB) attenuator is presented as an example.
Citation: Applied Optics
Volume: 47
Issue: 18
Pages: pp. 3360 - 3363
Keywords: attenuator, laser, mirror
Research Areas: Standards
PDF version: PDF Document Click here to retrieve PDF version of paper (215KB)