Monostatic Ladar demonstrator with micro-optical bidirectional beam control

Matthias Rungenhagen; Manuel Kunz; Eugen Romasew; Hans Dieter Tholl

doi:10.1117/12.829132

25 September 2009 Monostatic Ladar demonstrator with micro-optical bidirectional beam control

Matthias Rungenhagen, Manuel Kunz, Eugen Romasew, Hans Dieter Tholl

Proceedings Volume 7483, Technologies for Optical Countermeasures VI; 74830Q (2009) https://doi.org/10.1117/12.829132
Event: SPIE Security + Defence, 2009, Berlin, Germany

Abstract

In recent times the importance of Ladar systems for military applications increases rapidly. Prevalent application in this area is 3D imaging. Conventional 3D scanning systems usually employ mirror-based mechanisms. Often these suffer from bulky architecture and a fixed scanning pattern. In this paper we describe an experimental monostatic Ladar setup with micro-optical bidirectional beam control. This system offers certain advantages like random beam pointing and a compact design due to transmissive optical elements with combined emitter and receiver channel. Our publication depicts the setup of a Ladar demonstrator with micro-optical beam steering at lab-level. The range finding system is based on time-of-flight principle at near infrared wavelength. Due to monostatic configuration a single detector is used for start and stop pulse generation. The beam steering is accomplished with decentred micro-lens arrays, which are driven by a precision alignment system. The micro-optical elements act as entrance and exit aperture simultaneously. The results of laboratory characterization measurements and data evaluations complete our overview of the accomplished work.

Citation Download Citation

Matthias Rungenhagen, Manuel Kunz, Eugen Romasew, and Hans Dieter Tholl "Monostatic Ladar demonstrator with micro-optical bidirectional beam control", Proc. SPIE 7483, Technologies for Optical Countermeasures VI, 74830Q (25 September 2009); https://doi.org/10.1117/12.829132

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KEYWORDS

Diffraction

LIDAR

Beam controllers

Diffraction gratings

Sensors

Wavefronts

Beam steering

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