Full solid state picosecond laser regenerative amplifier

Abstract

The invention provides a full solid state picosecond laser regenerative amplifier which comprises a seed light source, an optical isolation system, a second polarization selecting lens (10), an electro-optical pockels cell (11), a first concave face reflector (13), a second concave face reflector (16), a laser crystal (15), a plane mirror (14) and a pump light source, wherein the seed light source is used for providing horizontal polarized seed light, the optical isolation system comprises a first polarization selecting lens (7), a Faraday rotator (8) and a half wave plate (9), and is set to be in a mode that horizontal polarized light becomes vertical polarized light after transmitting the optical isolation system, the second polarization selecting lens (10) is capable of transmitting horizontal polarized light and reflecting vertical polarized light, the electro-optical pockels cell (11) is set to be in a mode the polarized direction of light is rotated by 45 degrees after the light transmits the electro-optical pockels cell (11) once, the plane mirror (14) is used for reflecting seed light and transmitting pump light, and the pump light source is used for emitting pump light, enabling the pump light to penetrate the plane mirror (14) and condensing the pump light onto the laser crystal (15).

Description

technical field [0001] The invention belongs to the technical field of laser pulse amplification, in particular to an all-solid-state picosecond laser regenerative amplifier. Background technique [0002] Laser is one of the greatest inventions of the 20th century, which has an important and far-reaching impact on the development of human society. Since the first laser appeared in 1960, lasers have gone through the history of gas lasers, liquid lasers, semiconductor lasers, and all-solid-state lasers (DPL). With the development of all-solid-state lasers, the engineering, stability, volume, and lifetime of lasers have been greatly optimized. With the continuous expansion of applications of all-solid-state lasers in different fields, all-solid-state laser technology has become a major focus of laser technology research. direction. [0003] Picosecond lasers refer to output pulse widths in the order of picoseconds to hundreds of picoseconds (10 -12 ~10 -10 s) ultrashort pul...

AI Technical Summary

Problems solved by technology

[0006] However, in the existing all-solid-state picosecond kilohertz regenerative amplifiers directly pumped by semiconductors, self-focusing occurs due to the heating of the amplifying crystal, and it is difficult to efficiently use the pump light and output high-energy pulses with high beam quality.

Images