Liu Xufa, Li Qimin, Liu Changling. REFLECTIVITY MEASUREMENTS FOR 1.06μm LASER PULSES INTERACTING WITH LY12 AIUMINIUM TARGETS[J]. High Power Laser and Particle Beams, 1992, 04: 239-244.
Citation:
Liu Xufa, Li Qimin, Liu Changling. REFLECTIVITY MEASUREMENTS FOR 1.06μm LASER PULSES INTERACTING WITH LY12 AIUMINIUM TARGETS[J]. High Power Laser and Particle Beams, 1992, 04: 239-244.
Liu Xufa, Li Qimin, Liu Changling. REFLECTIVITY MEASUREMENTS FOR 1.06μm LASER PULSES INTERACTING WITH LY12 AIUMINIUM TARGETS[J]. High Power Laser and Particle Beams, 1992, 04: 239-244.
Citation:
Liu Xufa, Li Qimin, Liu Changling. REFLECTIVITY MEASUREMENTS FOR 1.06μm LASER PULSES INTERACTING WITH LY12 AIUMINIUM TARGETS[J]. High Power Laser and Particle Beams, 1992, 04: 239-244.
Reflectivities and spatial distributions of reflected light was measured with a multi ?chanell apparatus for 1.06μm laser pulses interacting with LY12 aluminum targets in 1 atm air. As the laser power density changed from 1.68×l04 to 6.08 × 104W/cm2 with target surface roughness 1.6～3.2μm, the reflectivity reduced from 0.90 to 0.8 for long pulses. For 2.83 × 108 W/cm2 short pulses, its reflectivity was 0.78. The experiments indicated that reflectivity and thd spatial dlistribution of the reflected light was dependent on the temperature field of the targets, optical property of ablated surface and the mechanism of laser energy absorption by vapor plume.
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