Flattop beam illumination for 3D imaging ladar with simple optical devices in the wide distance range

We have developed an illumination optical system for 3D imaging ladar (laser detection and ranging) which forms flattop beam shape by transformation of the Gaussian beam in the wide distance range. The illumination is achieved by beam division and recombination using a prism and a negative powered l...

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Bibliographic Details
Published in:Optical review (Tokyo, Japan) Japan), 2016-04, Vol.23 (2), p.155-160
Main Authors: Tsuji, Hidenobu, Nakano, Takayuki, Matsumoto, Yoshihiro, Kameyama, Shumpei
Format: Article
Language:English
Subjects:
Atomic
Lasers
Microwaves
Molecular
Optical and Plasma Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Quantum Optics
Regular Paper
RF and Optical Engineering
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Summary:We have developed an illumination optical system for 3D imaging ladar (laser detection and ranging) which forms flattop beam shape by transformation of the Gaussian beam in the wide distance range. The illumination is achieved by beam division and recombination using a prism and a negative powered lens. The optimum condition of the transformation by the optical system is derived. It is confirmed that the flattop distribution can be formed in the wide range of the propagation distance from 1 to 1000 m. The experimental result with the prototype is in good agreement with the calculation result.
ISSN:1340-6000
1349-9432
DOI:10.1007/s10043-016-0194-x