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Pulse fiber laser of fiber bragg grating modulation Q

A technology of fiber lasers and fiber gratings, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of large volume, increase optical alignment, etc., achieve the effect of reducing coupling loss and improving system stability

Inactive Publication Date: 2013-07-24
JIANGSU SKYERALASER TECH
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  • Abstract
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  • Claims
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Problems solved by technology

However, the fly in the ointment is that the Q-switching element in the existing Q-switched pulsed fiber laser is usually made of acousto-optic crystal material, which is large in size, and optical collimation needs to be added at both ends to send the optical signal into and out of the fiber

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  • Pulse fiber laser of fiber bragg grating modulation Q
  • Pulse fiber laser of fiber bragg grating modulation Q
  • Pulse fiber laser of fiber bragg grating modulation Q

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Embodiment Construction

[0014] Depend on figure 1 It is known that a pulsed fiber laser with fiber grating Q switching consists of a fixed wavelength fiber grating 101, a tunable fiber grating 102, an active doped double-clad fiber 103, a pumping semiconductor laser 104, a fiber pumping optical beam combiner 105, Fiber isolator and collimator, pump driving circuit 106, piezoelectric ceramic or magnetostrictive driver 107, main control circuit 108 and interface circuit 109, fixed wavelength fiber grating 101 and tunable fiber grating 102 form two parts of fiber laser A reflector, the tunable fiber grating 102 is packaged on the piezoelectric ceramic or magnetostrictive material, the described tunable fiber grating 102 is connected with the piezoelectric ceramic or magnetostrictive driver 107, the piezoelectric ceramic or magnetostrictive driver 107 compressing 102-a or stretching 102-b the tunable fiber grating 102 can change the reflection center wavelength of the tunable fiber grating 102, so that t...

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Abstract

The invention discloses a pulse fiber laser of fiber bragg grating modulation Q. The pulse fiber laser comprises a fixed wavelength fiber bragg grating (101), a tunable fiber bragg grating (102), an active mixing double-clad fiber (103), a pumping semiconductor laser (104), a fiber pumping photosynthetic bundle device (105), a pumping drive circuit (106), a piezoelectric ceramic or magnetostriction drive circuit (107), a main control circuit (108) and an interface circuit (109), and is characterized in that the tunable fiber bragg grating (102) is connected with the external drive circuit (107), the tunable fiber bragg grating (102) is compressed or stretched so as to change a reflection central wavelength under the action the external drive circuit (107), and the reflection central wavelength of the tunable fiber bragg grating (102) and the wavelength of the other fixed wavelength fiber bragg grating (101) are overlapped and mismatched, thus the pulse fiber laser sends out periodic pulse laser output. The pulse fiber laser provided by the invention has the advantages that the full one-dimensional fiber of an optical element is realized, the coupling loss is reduced, and the system stability is improved.

Description

technical field [0001] The invention relates to a pulsed fiber laser, in particular to a pulsed fiber laser with fiber grating Q-switching. Background technique [0002] In the fields of material surface marking, engraving, and scientific experiments, pulsed lasers are widely used. Among them, Q-switched lasers are widely used in pulsed lasers due to their advantages of simple structure, stable performance and low cost. However, the fly in the ointment is that the Q-switching element in the existing Q-switched pulsed fiber laser is usually made of acousto-optic crystal material, which is bulky, and optical collimation needs to be added at both ends to send the optical signal into and out of the fiber. How to use the modulator of all-fiber materials has become a difficult point for pulsed fiber lasers. Only when an all-fiber modulator is used as the Q-switching component of the pulsed laser, can the optical path of the pulsed fiber laser be fully fiberized and achieve the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/121
Inventor 周胜李丰谈根林
Owner JIANGSU SKYERALASER TECH
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