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High reflector absorptance measurements by the surface thermal lensing technique
1997
Laser-Induced Damage in Optical Materials: 1996
Surface thermal lensing is an alternate configuration of a photothermal deflection system that was used to measure low levels of optical absorption. The thermal lensing configuration facilitated the alignment of the pump and probe laser beams by using a larger diameter probe beam. This technique was applied to high performance optical coatings, specifically high reflectors at 511 nm, zero degrees angle of incidence. The absorptance of these coatings was previously measured using a high power
doi:10.1117/12.274226
fatcat:4jrcxzpn7ngqxb6v63i6ybqhke