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Ring cavity mode locking fiber laser

A fiber laser and ring cavity technology, used in lasers, laser parts, phonon exciters, etc., can solve the problem of not being able to develop the repetition frequency of optical frequency comb technology, so as to improve the repetition frequency, that is, the frequency interval, and improve the resolution. , the effect of shortening the cavity length

Inactive Publication Date: 2013-04-03
PEKING UNIV
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Problems solved by technology

[0010] None of the above technical solutions can develop the ideal repetition rate required by the optical frequency comb technology

Method used

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  • Ring cavity mode locking fiber laser
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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0041] A ring cavity mode-locked fiber laser capable of producing high repetition rate laser light according to an embodiment of the present invention, the ring cavity mode-locked fiber laser includes an optical isolator, a polarization control element, a first wavelength division multiplexing collimator 1 and a second wave Division multiplexing collimator 10.

[0042] The pigtail of each WDM collimator is a doped gain fiber or a common single-mode fiber, and the doped gain fiber can be highly doped or low doped with erbium, ytterbium, holmium, thulium and other rare earth elements. Its dispersion can be positive or negative.

[0043] Each wavelength division multiplexing collimator includes a double-tailed fiber optic collimator lens, and one end surface of the double-pigtailed fiber optic collimator lens is fixed with a wavelength division multiple...

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Abstract

The invention discloses a ring cavity mode locking fiber laser capable of generating high-repeating-frequency laser. The ring cavity mode locking fiber laser comprises an optoisolator, a polarization control component, a first wavelength division multiplexing collimator (1) and a second wavelength division multiplexing collimator (10). Simultaneously, a structure that the optoisolator made of a film magneto-optic material and light pass through a grating pair in unidirectional mode is adopted, the length of the optical fiber is greatly reduced, a laser system is simplified, coupling power and coupling efficiency are improved, repeating frequency, namely frequency interval, is improved, and resolution of the ring cavity mode locking fiber laser used as a frequency comb of a light source is improved.

Description

technical field [0001] The invention relates to the technical field of mode-locked fiber laser and frequency comb measurement, in particular to a ring cavity mode-locked fiber laser capable of generating high repetition frequency laser. Background technique [0002] Optical frequency combs are used to achieve extremely precise measurements of optical frequencies and are produced by mode-locked lasers, which are ultrashort pulse lasers. Two characteristics of the optical pulses emitted by a mode-locked laser are key to producing good optical frequency combs. [0003] The first characteristic is the repetition rate (frequency interval). The mode-locked laser emits a pulse sequence at a repetitive frequency. The spectrum of this pulse sequence light does not extend continuously to both sides centered on the carrier frequency, but forms many discrete frequencies. This frequency distribution is very similar to a comb, and the frequency interval is the same as the repetition The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/10
Inventor 王爱民李辰王贵重姜通晓张志刚
Owner PEKING UNIV
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