Optical fiber mode locked laser

A mode-locked laser and fiber technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of non-tunable, spectrum filter components are not easy to be all-fiber, and achieve easy adjustment, avoid insertion loss and alignment Difficulty, the effect of increasing environmental stability and robustness

Inactive Publication Date: 2012-02-01
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem that the spectrum filter element in the existing fiber mode-locked laser technology is not easy to be fully fiber-optic and cannot be tuned

Method used

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  • Optical fiber mode locked laser
  • Optical fiber mode locked laser
  • Optical fiber mode locked laser

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] Such as figure 1 As shown, the present invention provides a fiber mode-locked laser, in which a Sagnac filter is inserted into the cavity of the fiber mode-locked laser as a spectrum filter element to achieve the functions of assisting mode-locking and narrowing pulse width. The fiber mode-locked laser is a ring cavity, and the pump diode 2 inputs the pump laser light into the gain fiber 3 through the pump / signal combiner 4, and after the pump light is amplified by the gain fiber 3, oscillation is formed in the ring cavity. thereby producing laser light. The online polarization beam splitter isolator 6 has two functions: one is to isolate the laser light transmitt...

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Abstract

The invention discloses an optical fiber mode locked laser. A Sagnac filter, which is arranged in a cavity of an optical fiber mode locked laser, is utilized as a frequency spectrum filtering element that is used for assisting mode locking and narrowing a pulse width. Because the filer is an all-fiber device, an insertion loss and an aligning difficulty can be avoided, wherein the insertion loss and the aligning difficulty are caused by introduction of a block device; and environmental stability and robustness of the optical fiber mode locked laser are enhanced; besides, a filtering bandwidth is easy to adjust and adjustment of the filtering bandwidth enables a spectral width and a pulse width of an output mode locked pulse to be effectively changed.

Description

technical field [0001] The invention relates to the technical field of optics and laser optoelectronics, in particular to an optical fiber mode-locked laser. Background technique [0002] Fiber lasers have attracted widespread attention due to their high efficiency, low threshold, high beam quality, compactness, and high performance / price ratio, and have been developed by leaps and bounds. In recent years, due to the development of fiber mode-locking technology, fiber mode-locked lasers have been greatly improved in terms of single pulse energy, pulse width and pulse sequence stability, and have shown broad application prospects in military, medical and industrial processing fields. . [0003] Among many fiber mode-locked lasers, the total positive dispersion mode-locked laser has attracted more and more attention and research because of its simple structure, easy all-fiber conversion, and high single-pulse energy. The fully positive dispersion mode-locked laser refers to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/098H01S3/00
Inventor 巩马理周洁闫平张海涛王东生
Owner TSINGHUA UNIV
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