A “comb” structure of beam intensity distribution is designed and achieved to measure a target displacement of micrometer level in laser plasma propulsion. Base on the “comb” structure, the target displacement generated by nanosecond laser ablation solid target is measured and discussed. It is found that the “comb” structure is more suitable for a thin film target with a velocity lower than tens of millimeters per second. Combing with a light-electric monitor, the ‘comb’ structure can be used to measure a large range velocity.
Proc. SPIE. 9142, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics: Optical Imaging, Remote Sensing, and Laser-Matter Interaction 2013
The quantum holography scenario with classical thermal light source based on the second-order correlation measurement is proposed. Contrastive analysis prove that the quantum holography can be carried out with classical thermal light source and entangled two-photon light source. For the second-order correlation measurement in quantum holography, the “unbalanced test system” condition must be satisfied.