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Polarization-based transceiver integrated sub-nanosecond pulse laser detection system

A pulsed laser, sub-nanosecond technology, applied in the direction of optical device exploration, etc., can solve the problems of impossibility of sub-nanosecond pulsed laser and low ranging accuracy, achieve good application prospects, small beam divergence angle, and improve detection accuracy Effect

Inactive Publication Date: 2014-10-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Due to the installation position, there is a baseline distance between the center of the transmitting optical system and the center of the receiving optical system, and there is inevitably a detection blind area in the optical path. In addition, the pulsed laser diode used is limited by the characteristics of the tube itself, and it is impossible to achieve sub-nanosecond pulsed laser , generally generate a pulse signal of tens of nanoseconds, resulting in low ranging accuracy

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  • Polarization-based transceiver integrated sub-nanosecond pulse laser detection system
  • Polarization-based transceiver integrated sub-nanosecond pulse laser detection system

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Embodiment Construction

[0023] In order to better illustrate the purpose and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] The composition of the polarization-based transceiver integrated sub-nanosecond pulse laser detection system of the present invention is as follows: figure 1 As shown, it includes a laser light source 1, a transmitting beam shaping system 2, a 1 / 2 wave plate 3, a polarization beam splitter 4, a 1 / 4 wave plate 5, a Galileo telescopic system 6, a narrow-band filter 8, and a receiving beam converging system 9 and photodetector 10 . Target 7 is the tested sample.

[0025] In this embodiment, the laser light source 1 adopts LD-pumped passive Q-switched Nd 3+ :YAG / Cr 4+ : YAG microcavity laser; emission beam shaping system 2 adopts plano-convex lens OLB10-040; 1 / 2 wave plate 3 adopts GCL-060616; polarization beam splitter 4 adopts GCC-402052; 1 / 4 wave plate 5 adopts G...

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Abstract

The invention relates to a receiving and transmitting integrated sub-nanosecond pulse laser detection system based on polarization, and belongs to the technical field of laser. The receiving and transmitting integrated sub-nanosecond pulse laser detection system uses a polarized laser as a detection light source, and the polarization direction of linear polarized laser is adjusted by rotating coaxial 1 / 2 wave plate and 1 / 4 wave plate to realize the separation of a transmitted signal from a received signal at a polarization beam splitter prism. The conventional laser detection system with separated optical transmitting and optical receiving windows has detection blind areas, but the receiving and transmitting integrated sub-nanosecond pulse laser detection system adopts an optical system receiving and transmitting integrated mode, and sub-nanosecond pulse laser is adopted for detection, the suspended particle resistance and cloud interference resistance during detection are improved, and the detection accuracy is also improved. The receiving and transmitting integrated sub-nanosecond pulse laser detection system is particularly suitable for medium-short-range laser ranging, and has a good application prospect.

Description

technical field [0001] The invention relates to a sub-nanosecond pulse laser detection system based on polarization-based transceiver integration, which belongs to the field of laser technology. Background technique [0002] The optical window in the traditional pulse system laser detection system adopts the independent mode of the transmitting optical system and the receiving optical system. Due to the installation position, there is a baseline distance between the center of the transmitting optical system and the center of the receiving optical system, and there is inevitably a detection blind area in the optical path. In addition, the pulsed laser diode used is limited by the characteristics of the tube itself, and it is impossible to achieve sub-nanosecond pulsed laser , generally produces a pulse signal of tens of nanoseconds, resulting in low ranging accuracy. Contents of the invention [0003] The purpose of the present invention is to provide a polarization-based ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V8/12
Inventor 陈慧敏才德程合蛟
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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