Method for obtaining high-repetition-frequency large-energy tunable laser

A high-energy, high-repetition technology, used in lasers, laser parts, phonon exciters, etc., can solve the problem of lack of tunable laser high-repetition and high-energy output, and achieve high peak power density, Effects of low average power and short pulse interval

CN105390919AInactive Publication Date: 2016-03-09HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-03-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for obtaining high-repetition-frequency large-energy tunable laser, relates to the field of tunable laser, and aims at the solving the problem that consideration is not given to both high repetition frequency output and large energy output of the tunable laser in the present tunable laser technology. Time domain modulation is carried out on high-repetition-frequency pumped pulse laser to output pumped pulse train laser; and the output pumped pulse train laser is shaped by a light beam shaping system, input to a first reflection prism, reflected by the first reflection prism and then input to a dye box, a dye solution in the dye box is excited by the pumped pulse laser, the laser is further input to a resonant cavity composed of an output coupling mirror, a grating and a tuning mirror, a light beam expander is inserted into the resonant cavity to prevent laser in the cavity from damaging the grating, the tuning mirror is rotated, and pumped pulse laser output by the output coupling mirror is reflected by a second reflection prism and a third reflection prism to realize laser wavelength tuning. The method can be used to modulate the high-repetition-frequency pumped pulse laser.
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Description

technical field

[0001] The invention relates to a method for obtaining high repetition frequency and large energy tunable laser. It belongs to the field of tunable laser. Background technique

[0002] Since the invention of the laser light source, its good monochromaticity and high brightness have brought great convenience to people's production and life. With the increasing application of laser light sources, in order to expand its application range, tunable lasers with continuously tunable output wavelengths within a certain range of wavelengths have become a research hotspot in laser technology. Especially in some special applications, such as long-distance spectral diagnosis, isotope separation, etc., higher requirements are put forward for tunable laser sources with high repetition rate and high energy. However, the current tunable laser technology has conflicts with the high repetition frequency and large energy output of tunable lasers, and it is difficult to balanc...

Examples

specific Embodiment approach 1

[0013] Specific implementation mode one: refer to Figure 1 to Figure 4 Specifically explain this embodiment, a method for obtaining a high repetition frequency, high energy tunable laser described in this embodiment, the method includes the following steps:

[0014] Step 1: Input the high repetition frequency pump pulse laser into the time domain modulation device 1 for time domain modulation, and output the pump pulse train laser,

[0015] Step 2: After the output pump pulse train laser is shaped by the beam shaping system composed of the concave lens 2 and the convex lens 3, it is incident on the No. 1 reflective prism 4, refracted by the No. 1 reflective prism 4, and then incident to the dye box 5 , the dye solution in the dye box 5 is excited by the pump light pulse laser, and is incident into the resonant cavity formed by the output coupling mirror 6, the grating 10 and the tuning mirror 11, and a beam expander 9 is inserted in the resonant cavity to prevent the intracav...

specific Embodiment approach 2

[0019] Specific embodiment 2: This embodiment is a further description of the method for obtaining high repetition frequency and high energy tunable laser described in specific embodiment 1. In this embodiment, the time domain modulation device adopts electronic shutter or electro-optic crystal The switch is implemented.

specific Embodiment approach 3

[0020] Specific embodiment 3: This embodiment is a further description of the method for obtaining a high-repetition-frequency, high-energy tunable laser as described in the specific embodiment 1. In this embodiment, the tuning mirror 11 is coated with a laser for dye output The high reflection coating and the anti-reflection coating for the pump laser, the reflectivity R>95% of the high reflection coating, and the transmittance T>95% of the anti-reflection coating.