100MHz high repetition frequency, 1ns narrow pulse width narrow line width laser mixing amplifying device and method

Abstract

The invention discloses a 100MHz high repetition frequency, 1ns narrow pulse width narrow line width laser mixing amplifying device and method. The 100MHz high repetition frequency, 1ns narrow pulse width narrow line width laser mixing amplifying device comprises a single-frequency continuous optical fiber laser device, a high-speed light intensity modulator, a super-high frequency random wave generator, an optical isolator, an optical fiber amplifier, a polarization isolator, a collimator, a coupling lens and an LD double-end-surface pump solid laser amplifier. The single-frequency continuous optical fiber laser device, the high-speed light intensity modulator, the super-high frequency random wave generator, the optical isolator, the optical fiber amplifier, the polarization isolator, the collimator and the coupling lens are sequentially connected; the coupling lens and a two-color coupling mirror on the LED double-end-surface solid laser amplifier are connected; the super-high frequency random wave generator is connected with the high-speed light intensity modulator. According to the 100MHz high repetition frequency, 1ns narrow pulse width narrow line width laser mixing amplifying device, a small-signal single-frequency optical fiber laser device can be modulated through the high-speed modulator; when high power is provided, the solid laser amplifier is used for amplifying, and therefore the problem that the amplifier is damaged under a high power condition cased by easily generated stimulated scattering and spontaneous amplification radiating effect is avoided.

Description

technical field [0001] The invention relates to a 100MHz high repetition frequency, 1ns narrow pulse width and narrow line width laser hybrid amplification device and method thereof. Background technique [0002] Narrow linewidth and high repetition rate solid-state lasers have important applications in the fields of optical fiber communication, optical fiber sensing, and material technology due to their narrow linewidth and low noise. In recent years, with the development of astronomical optics, high-power, high-repetition frequency, narrow-linewidth fiber lasers have new application prospects in the field of ground-based astronomical observation. [0003] At present, in domestic and foreign research, there are three main methods to achieve high repetition rate: Q-switching, mode-locking, and modulation. [0004] The Q-switching method is mainly based on acousto-optic Q-switching. So far, the highest repetition frequency that can be achieved by LD-pumped acousto-optic Q-sw...

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Problems solved by technology

[0007] In summary, none of these three methods can meet the requirements of 100MHz high repetition frequency, 1ns narrow pulse width and narrow line width for some projects

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