Design and calculation of ground-to-air transmitting optical system of carbon-dioxide laser communicator

Hongtao Zhang; FuChang Yin; Qiugui Wang

doi:10.1117/12.481534

30 August 2002 Design and calculation of ground-to-air transmitting optical system of carbon-dioxide laser communicator

Hongtao Zhang, FuChang Yin, Qiugui Wang

Proceedings Volume 4924, Holography, Diffractive Optics, and Applications; (2002) https://doi.org/10.1117/12.481534
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Transmitting optical system was part of"maneuverable type Carbon-Dioxide atmospheric Laser Communicator", which consists of Carbon-Dioxide laser, acousto-optical modulator, focusing lens, collimating lens and transmitting antenna. Ground-to-air communication distance up to 15km, error bit rate no more than 10-9. Image and speech can be transmitted separately with half duplex. Method for design major optical devices of ground-to-air laser communication transmitter, such as laser, optical lens, modulator and transmitting antenna was analyzed in the paper. The principle technical index of acousto-optical modulator and Cassegrainian antenna which determine decisively to transmitting optical system were detailed calculation. Experiment curve of acousto-optical modulator with germanium material versus carbon-dioxide laser beam, for instance, modulation bandwidth, diffraction efficiency and modulation linear was measured. At last, gain and efficiency of reflective Cassegrainian antenna were explored.

Citation Download Citation

Hongtao Zhang, FuChang Yin, and Qiugui Wang "Design and calculation of ground-to-air transmitting optical system of carbon-dioxide laser communicator", Proc. SPIE 4924, Holography, Diffractive Optics, and Applications, (30 August 2002); https://doi.org/10.1117/12.481534

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