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Adjustable repetition frequency femtosecond solid-state laser and adjusting method

A solid-state laser, repetition rate technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of relatively high machining accuracy, complex resonator design, and resonator detuning, and achieve precise control of repetition. The effect of frequency variation, low machining accuracy requirements, and reduced adjustment difficulty

Pending Publication Date: 2020-11-24
SHANDONG NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the fixed and limited parameters of SESAM, the length of the resonant cavity is generally adjusted precisely by mechanical or piezoelectric ceramic moving cavity mirrors, so as to realize the adjustment of the repetition frequency, but the requirements for machining accuracy are relatively high, and it is easy to cause the resonant cavity to be damaged. Detuning, its adjustment accuracy is on the order of hundreds of microns, which cannot meet the needs. At the same time, there are problems such as complex design of stable resonators and high cost. The existing all-solid-state ultrafast lasers with adjustable repetition frequency cannot meet the industrial requirements. need

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  • Adjustable repetition frequency femtosecond solid-state laser and adjusting method
  • Adjustable repetition frequency femtosecond solid-state laser and adjusting method

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Embodiment 1

[0030] In a typical implementation of the present disclosure, such as Figure 1-Figure 2 As shown, a femtosecond solid-state laser with tunable repetition rate is proposed.

[0031] It mainly includes a light source module, a mirror group, an output mirror and a semiconductor saturable absorption mirror. A W-shaped resonant cavity is formed inside the laser. In order to solve the traditional method of mechanical or piezoelectric ceramic moving cavity mirror proposed in the background technology to fine-tune the resonant cavity The length of the resonator does not meet the requirements. By inserting a cavity length precision compensator composed of a pair of isosceles prisms in the optical path of the resonator, the optical path of the resonator is changed, thereby controlling the change of the repetition rate of the all-solid-state femtosecond laser.

[0032] Specifically, a light source module, a mirror group, an output mirror, and a semiconductor saturable absorber mirror ar...

Embodiment 2

[0057] In another typical implementation of the present disclosure, such as Figure 1-Figure 2 As shown, a method for adjusting the repetition rate of a femtosecond solid-state laser is proposed.

[0058] Utilize the adjustable repetition rate femtosecond solid-state laser as described in embodiment 1, comprise the following steps:

[0059] The mirror group acquires the laser light output by the light source module and reflects it to the output mirror;

[0060] The output mirror reflects the laser light and outputs it to the semiconductor saturable absorbing mirror through the compensator;

[0061] The semiconductor saturable absorbing mirror reflects the laser light and passes through the compensator, and transmits the output laser light through the output mirror;

[0062] The two triangular prisms are equilateral triangular prisms with different side lengths. Fix the triangular prism with the smaller side length and adjust the position of the other triangular prism. By adj...

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Abstract

The invention provides an adjustable repetition frequency femtosecond solid-state laser and an adjusting method and relates to the solid-state laser field, and the laser comprises a light source module, a reflector group, an output mirror and a semiconductor saturable absorption mirror which are arranged in sequence, a W-shaped resonant cavity is formed, a compensator consisting of two triangularprisms is arranged between the semiconductor saturable absorption mirror and the output mirror; the relative positions of the triangular prisms are adjusted; the optical path of the resonant cavity ischanged to adjust the repetition frequency output by the all-solid-state femtosecond laser, a cavity length precision compensator composed of a pair of isosceles prisms is inserted into the resonantcavity, the optical path of the resonant cavity is changed by adjusting the relative positions of the prisms, and therefore the change of the repetition frequency of the all-solid-state femtosecond laser is controlled.

Description

technical field [0001] The present disclosure relates to the field of solid-state lasers, in particular to a femtosecond solid-state laser with an adjustable repetition rate and an adjustment method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] All-solid-state lasers can achieve high conversion efficiency and stable laser output performance, and have the advantages of good beam quality, high integration and convenient handling, and have always been the focus of research in the laser field. Among them, the ultrashort pulse laser realized by mode-locking technology has the characteristics of high peak power and easy control of pulse energy, which can meet the application requirements in many fields such as life, scientific research, medical treatment and industry. . [0004] Ultrafast solid-state lasers are widely used in the processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/081
CPCH01S3/0817H01S3/0811
Inventor 张程程晨周玉翔占子俊
Owner SHANDONG NORMAL UNIV
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