Beam combination device based on photonic crystal laser

A photonic crystal and laser technology, which is applied to devices for controlling the output parameters of lasers, etc., can solve the problems of difficult module assembly and adjustment, expensive production costs, and increased optical system complexity.

CN106785895AInactive Publication Date: 2017-05-31INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
8 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention discloses a beam combination device based on a photonic crystal laser. The device comprises: a tube; a stepping heat sink configured to dispose photon laser short bars and realize the overlapping of faculas of a fast-axis direction after laser emitted from the photon laser short bars at different heights of steps passes through a reflector; a spherical lens configured to compress angles of divergence of the fast-axis direction and a slow-axis direction; the reflector configured to change a laser propagation direction; and a focusing coupling mirror configured to couple the light beam after the laser is subjected to beam combination (the overlapping of the fast-axis direction) into fibers. The beam combination device based on the photonic crystal laser reduces the usage quantity of lenses and the volume of the tube, reduce the manufacturing cost, the assembling and the regulation of the lenses are easier, and the device is more compact in structure so as to more easily couple into fibers with small core diameters. The beam combination device based on the photonic crystal laser also can realize the coupling output with hectowatt magnitudes through simple extension.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the application field of laser beam combining, and specifically designs a device based on photonic crystal laser beam combining. Background technique

[0002] Since the first ruby ​​laser was successfully developed in the 1860s, semiconductor lasers, as a new generation of lasers, have been widely used in industrial processing, medical, military, national defense and other fields due to their small size, high electro-optical conversion efficiency, and long life. However, due to the limitation of its own structure, the divergence angle in the direction of the fast and slow axes is very different, and the overall beam quality is poor. With the increasing demand for industrial processing and high-power fiber laser pump sources, semiconductor lasers with high power, high brightness and high beam quality have become a popular research topic in the world. Laser beam combining is one of the effective methods to achieve high power, hi...

Examples

Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] Various structural schematic diagrams according to disclosed embodiments of the invention are shown in the accompanying drawings. The figures are not drawn to scale, with certain details exaggerated and possibly omitted for purposes of clarity. The various data, shapes and their relative sizes and positional relationship instruments shown in the figure are exemplary. In practice, deviations may be caused by manufacturing tolerances or limited technology, and those skilled in the art may It can be additionally designed to have different shapes, sizes, and relative positions.

[0029] figure 1 It is a top view of a device based on photonic crystal laser beam combining. As shown in the figure, the device includes: ...