Device for generating wavelength-tunable ultra-short visible and near-infrared laser pulses simultaneously

Abstract

The invention relates to a device for generating wavelength-tunable ultra-short visible and near-infrared laser pulses simultaneously. The device comprises a femto second laser, a tunable secondary non-linear optical parameter amplification system, a chirp mirror-prism pair compression system and a super-continuous near-infrared white light generation system, a light beam output by the femto second laser is divided into two light beams by the tunable secondary non-linear optical parameter amplification system, one light beam is amplified and enters the chirp mirror-prism pair compression system, and the other light beam directly enters the super-continuous near-infrared white light generation system. According to the device, wavelength-tunable visible laser pulses of high light beam quality and periodic quantity level as well as near-infrared ultra-short laser pulses of the high light beam quality can be obtained simultaneously.

Description

Technical field [0001] The invention relates to an ultrashort pulse laser, in particular to a device for simultaneously generating ultrashort visible and near infrared pulses with tunable wavelength. Background technique [0002] In recent years, with the development of femtosecond laser technology, ultrashort lasers have played an irreplaceable role in physical chemistry and other research fields, especially in the visible and near-infrared wavelength bands, ultrashort pulse lasers have considerable performance in spectral detection such as ultrafast pump detection. Wide application prospects. However, it is very difficult to directly use stimulated radiation to obtain both visible and near-infrared ultra-short pulses. Therefore, how to use non-collinear optical technology to generate ultra-short laser pulses in the visible and near-infrared bands at the same time, and obtain a broadband laser with a tunable period. Pulsed spectrum detection of visible light pumping-visible lig...

AI Technical Summary

Problems solved by technology

In this device, the supercontinuum white light spectrum can be effectively generated, but the laser source is not used effectively, the 800nm ​​laser source that is not amplified by the non-collinear optical parameters is not used, and the utilization rate of the laser is not effectively improved. Therefore, how to use Effective and efficient use of laser energy in a laser system to simultaneously generate visible and near-infrared laser pulses is particularly important

Images