Method for generating ultraviolet optical frequency comb drive source

Abstract

The invention relates to a method for generating a drive source of an ultraviolet optical frequency comb. The method comprises the steps of synchronous control of laser and chirped pulse amplification of optical parameters, wherein ultrashort pulses outputted by a laser with stable carrier phase are divided into two beams; one beam is used as signal light to be amplified for chirped pulse amplification of the optical parameters, and the other beam is used for generating synchronous pumping signals through crossed phase modulation or gain selective amplification; picosecond and nanosecond intense pulse laser is taken as a pumping source for chirped pulse amplification of the optical parameters; and ultrashort and ultra-intense laser output is obtained by utilization of compression of grating pairs at an output end for chirped pulse amplification of the optical parameters. The method has the advantages that the method does not need a complex circuit system, can greatly reduce the requirement on the environment and particularly on temperature and vibration, and can obtain the ultraviolet optical frequency comb which has a wider application scope, relatively high power and high repetition frequency and shorter wavelength.

Description

technical field [0001] The invention relates to the direction of ultrafast laser technology, in particular to a method for generating a drive source for an ultraviolet optical frequency comb. Background technique [0002] The development of laser-based precision spectroscopy has greatly improved the ability of human beings to explore the laws of nature. It has been recognized by the scientific community as the most powerful tool for human beings to reveal new structures and new phenomena of matter, explore the physical laws of the microscopic world, and understand the atomic and molecular structures. . At the end of the 20th century, scientists broke through the barriers in the field of light field time domain and frequency domain research through the research of femtosecond laser frequency stabilization technology and the precise control of the carrier phase of ultrafast lasers, and realized simultaneous precise control of light field time-frequency domain And femtosecond ...

AI Technical Summary

Problems solved by technology

At present, the generation of ultraviolet and extreme ultraviolet combs is mostly driven by external cavity enhanced femtosecond pulses to generate high-order harmonics, and its further development is still limited to extremely ultrafast and precisely controlled femtosecond pulses in the time-frequency domain, which is difficult to obtain high repetition frequency and high peak power. second drive pulse, such as the conventional femtosecond oscillator level output single pulse energy is nanojoule level, and the ultraviolet comb generation experiment generally uses millijoule or even larger pulse drive

Images