High-power side-pumping 1525nm (human-eye safe waveband) automatic self-raman laser

Abstract

The invention discloses a high-power side-pumping 1525nm (human-eye safe waveband) automatic self-raman laser, and a core part of the filter is a side pump head. The side pump head comprises an LD array and a laser crystal rod, wherein the LD array is used for the pumping of the laser crystal rod, and the laser crystal rod is used for laser transmission and stimulated raman scattering. The LD array and the laser crystal rod operate in a resonant cavity formed by laser, a raman total-reflection mirror, and a raman light output mirror, thereby achieving the fundamental frequency light vibration, and achieving the conversion from fundamental frequency light to raman light through an acousto-optic Q-switching under the action of the laser crystal rod, wherein the raman light output mirror outputs 1525nm laser. The laser solves problems that an end-face pumping solid laser is low in output power and is lower in practicality, and also solve a problem that a common side-pumping solid laser is complex in structure.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a high-power side-pumped 1525nm eye-safe band self-Raman laser. Background technique [0002] Compared with lasers in other bands, 1.5μm band laser has a higher damage threshold for human eyes, so it is safe for human eyes; It has important applications in radar and other aspects. Using stimulated Raman scattering, a third-order nonlinear process, is an important method to generate lasers in the above-mentioned bands. [0003] So far, most of the reported solid-state Raman and self-Raman lasers around the 1.5 μm band use end-pumping technology. The advantages of solid-state Raman and self-Raman lasers using this pumping technology are low threshold and high conversion efficiency. , but due to the strong thermal lens effect in the working medium, it will greatly affect the stability of the laser. In addition, because this pumping method can only occur in the direction of the end face of t...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a high-power side-pumped 1525nm human eye-safe band self-Raman laser. For problems such as poor quality and unsatisfactory output power, please refer to the following description for details:

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