Dual-wavelength detection ignition laser system

Abstract

The invention discloses a dual-wavelength detection ignition laser system, and relates to the technical field of ignition laser systems. The problems of low energy efficiency and low self-checking reliability are solved. The dual-wavelength detection ignition laser system comprises an ignition laser, a detection laser device, a first reflector, a focusing lens, a coupling optical fiber, a self-focusing lens, a detection laser reflector, an ignition laser detector and a detection laser detector; light emitted by the ignition laser and light emitted by the detection laser are incident on the first reflector to be transmitted and reflected, reflected ignition laser is transmitted to the ignition laser detector, and the transmitted ignition laser is transmitted by the detection laser reflector after being converged through the focusing lens, the coupling optical fiber and the self-focusing lens in sequence; and the transmitted detection laser sequentially passes through the focusing lens, the coupling optical fiber and the self-focusing lens, enters the detection laser reflector to be reflected, returns to the first reflector along the same path and then is reflected to the detection laser detector. The dual-wavelength detection ignition laser system is simple in structure, high in energy utilization efficiency, high in power density, safe and reliable in laser measurement and capable of achieving smaller-caliber coupling optical fiber output.

Description

technical field [0001] The invention relates to the technical field of ignition laser systems, in particular to an ignition laser system for dual-wavelength detection. Background technique [0002] In the laser ignition system, the laser energy of the ignition laser is transmitted to the surface of the ignition agent in the laser ignition product through optical fiber transmission, thereby detonating the pyrotechnic product. The laser ignition system needs to have a self-test function, including the continuity self-test of the optical path and the output power self-test of the ignition laser. [0003] Existing ignition laser systems such as figure 1 As shown, the ignition laser detector 3 is connected to the ignition laser 1 through an optical fiber, the ignition laser 1 and the detection laser 2 are connected to the interface A of the fiber optic circulator 14 through the optical switch 13, and the ignition laser 1 and the detection laser 2 are connected to the interface B...

AI Technical Summary

Problems solved by technology

[0005] (1) After the ignition laser and the detection laser are coupled by optical fibers, they are then combined, which involves the transfer between the two core diameter fibers, resulting in a decrease in energy efficiency and an increase in the output fiber diameter;

[0006] (2) When the ignition laser and the detection laser are used for detection, additional devices such as an additional optical switch 13 and an optical fiber circulator 14 are required, which increases energy loss, budgetary cost and system volume;

[0007] (3) When the ignition laser output irradiates the surface of the pyrotechnic product, the laser power density decreases due to the irradiation distance and the characteristics of laser emission divergence;

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