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Resonant cavity for outputting mode-locking picosecond laser and mode-locking picosecond laser device

A picosecond laser and resonant cavity technology, applied in the field of lasers, can solve problems such as device damage, unstable mode locking, and increased system instability, and achieve the effects of easy operation, space saving, and compact size

Inactive Publication Date: 2012-12-19
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this solution is that tuning the pump power will change the energy in the cavity, resulting in unstable mode locking and Q modulation, which will damage the device and increase the instability of the system.

Method used

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  • Resonant cavity for outputting mode-locking picosecond laser and mode-locking picosecond laser device
  • Resonant cavity for outputting mode-locking picosecond laser and mode-locking picosecond laser device

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] figure 1 A mode-locked picosecond laser provided by an embodiment of the present invention is shown. The mode-locked picosecond laser is a mode-locked picosecond laser with tunable dual output pulse width. Such as figure 1 As shown, the mode-locked picosecond laser sequentially includes along the optical path: pump source 1, focusing mirror 2, plane mirror 8, laser crystal 3, first plano-concave coupling output mirror 4, second plano-concave mirror 5, Etalon 6 ( Etalon is a Fabry-Perot etalon) and Sesam mirror 7 (Sesam mirror is a semiconductor saturable absorbing mirror). In this embodiment, the pumping source 1 outputs a pumping beam, and the pumping beam is focused by a focusing mirror to pump the laser crystal; the fundamental frequency beam (that is, oscillating light) oscillates in a resonant cavity composed of a plane mirror 8 a...

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Abstract

The invention provides a resonant cavity for outputting mode-locking picosecond laser and a mode-locking picosecond laser device. The mode-locking picosecond laser device comprises a pumping source, a focusing lens and the resonant cavity for outputting the mode-locking picosecond laser, and the pumping source, the focusing lens and the resonant cavity are sequentially arranged along a light path. The resonant cavity is characterized that a laser crystal, a focusing device, a Fabry-Perot etalon and a semiconductor saturable absorber mirror are arranged in the resonant cavity, and the energy density of light beams acting on the semiconductor saturable absorber mirror can be sufficient to realize continuous mode-locking owing to the focusing device. Peak power of the picosecond laser device can be accurately controlled, so that different application requirements can be effectively met advantageously. Besides, pulse width of the picosecond laser device can be controlled, so that different application requirements can be effectively met advantageously. In addition, picosecond pulse width can be tuned, operation is easy, and mode-locking stability is unaffected. A pulse width tunable device is small in size and is beneficial to saving space.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular, the invention relates to a resonator for outputting mode-locked picosecond lasers and a mode-locked picosecond laser. Background technique [0002] With the rapid development of laser technology and its application requirements, the demand for high peak power picosecond lasers has greatly increased. Especially with the demand for ultrashort pulse lasers in various disciplines and industries, the demand for picosecond lasers has greatly increased, showing a wide range of application prospects (such as: national defense, industry, medical, biological and other fields). In different practical applications, picosecond lasers often require different peak powers. For example, for a picosecond laser with a peak power of GW level, the damage to the optical element during its use often greatly exceeds the damage threshold of the element. Therefore, for a specific practical application, whi...

Claims

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Application Information

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IPC IPC(8): H01S3/11H01S3/08H01S3/136
Inventor 麻云凤余锦樊仲维牛岗赵天卓闫莹
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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