Composite spectrum synthesis device

Abstract

Provided in the invention is a technical scheme relating to a composite spectrum synthesis device. According to the technical scheme, the composite spectrum synthesis device comprises a laser sub beam emitter, a beam prism group, a polarizing beam splitter, multi-layer dielectric film gratings, and a polarizing beam combiner. A laser sub beam emitted by the laser sub beam emitter is arranged by the beam prism group and then is split into P light and S light by the polarizing beam splitter; spectrum synthesis is carried out on the P light and the S light respectively by the multi-layer dielectric film gratings arranged at light paths and then the P light and the S light are gathered at the polarizing beam combiner for outputting. According to the device, the two groups of multi-layer dielectric film grating spectrum synthesis units are used for realizing spectrum synthesis of the p polarizing light and s polarizing light and then the polarizing beam combiner is used for completing composite power synthesis, thereby realizing high-brightness laser outputting and overcoming defects that the high light source requirement can not be met and the grating can not be obtained easily according to the existing spectrum synthesis apparatus. Therefore, practicability of the spectrum synthesis device is improved and the manufacturing cost is lowered.

Description

technical field [0001] The invention relates to the application field of laser technology, in particular to a composite spectrum synthesis device. Background technique [0002] The use of spectral synthesis technology can combine multiple laser beams with different wavelengths into one beam, while increasing the total output power while maintaining better beam quality, thereby improving the brightness of the laser. At present, there are two types of known spectral synthesis devices: the first type is based on polarization-dependent multilayer dielectric film gratings, which are composed of polarization-maintaining lasers and polarization-dependent multilayer dielectric film gratings. Multiple laser beams are incident on the grating at different angles. High dispersion capability combines multiple laser beams into one. The disadvantage of this type of device is that it can only achieve spectral synthesis of polarization-maintaining narrow-linewidth lasers, and the power of s...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of device is that it can only achieve spectral synthesis of polarization-maintaining narrow-linewidth lasers, and the power of such lasers is low, the system is complex, and the cost is high; the second type is based on deflection-independent multilayer dielectric film gratings. Composed of polarization-independent multilayer dielectric film gratings, the principle is similar to the first type of device

This type of device can achieve spectral synthesis of non-polarization-maintaining lasers, but it still requires complex and expensive narrow-linewidth lasers, and the design and preparation of polarization-independent multilayer dielectric film gratings are difficult. Currently, they are only used in very few laboratories. commercial product

Images