Monostatic lidar system

Details Monostatic lidar system Monostatic lidar system

1997-10-20

1998-12-08

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 28, 356 285, 359241, 359244, 359299, G01C 308, G01P 336, G02F 103, G02F 129

Patent

active

058478159

ABSTRACT:
This monostatic LIDAR system is a pulsed-radiation LIDAR system comprising, for the separation of the laser emitter beam from the laser echo backscattered by the photodetector of the receiver, an optical separator that deflects an incident light beam in different directions, depending on whether it transmits or reflects this beam, the coefficient of transmission or the coefficient of reflection of this optical separator varying as a function of the energy density of said incident light beam. Advantageously, this optical separator is constituted by a layer of vanadium dioxide VO.sub.2 deposited on a transparent plate. An optical separator of this kind is used to obtain a total transmission/reception output greater than that of an optical separator with semi-reflective plate while, at the same time, preserving the advantages that an optical separator of this kind brings about in the optical architecture of a LIDAR, these advantages being simplicity, easy setting, compactness and low-level parasitic reflections.

REFERENCES:
patent: 4283113 (1981-08-01), Eden
patent: 4528525 (1985-07-01), Eden et al.
patent: 4615619 (1986-10-01), Fateley
patent: 5095384 (1992-03-01), DeNatale
patent: 5208698 (1993-05-01), Muller
C. M. Lawson, et al., "Nonlinear Reflection at a Dielectric-Carbon Suspension Interface: Macroscopic Theory and Experiment", Applied Physics Letters, vol. 64, No. 16, Apr. 18, 1994, pp. 2081-2083.

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