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1.7μm band picosecond double-pulse fiber light source

A fiber optic light source and double-pulse technology, applied in the field of biomedical light sources, can solve problems such as poor environmental stability, difficulty in realizing double-pulse, and complicated assembly, and achieve the effect of compact device structure, high environmental stability, and easy installation and adjustment

Active Publication Date: 2020-05-12
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0005] In order to solve the problems of complex assembly, poor environmental stability, and difficulty in realizing double pulses in the prior art, the present invention proposes a 1.7μm band picosecond double pulse optical fiber light source that is suitable for all optical fibers and has good stability.

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  • 1.7μm band picosecond double-pulse fiber light source
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  • 1.7μm band picosecond double-pulse fiber light source

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] Such as figure 2 As shown, the 1.7 μm band picosecond double-pulse optical fiber light source of the present invention includes the following components:

[0026] 1550nm band laser 18 , intensity modulator 19 , DC bias controller 20 , arbitrary waveform generator 21 , microwave amplifier 22 , erbium-doped fiber amplifier 23 , highly nonlinear fiber 24 and 1.7 μm band filter 25 .

[0027] The 1550nm band laser 18, the intensity modulator 19, the erbium-doped fiber amplifier 23, the highly nonlinear fiber 24 and the 1.7 μm band filter 25 are optically connected in sequence. The electrical port of the arbitrary waveform generator 21 is connected to a microwave amplifier 22 via a cable. The microwave amplifier 24 is connected to the intensity modulator 19 through a cable, and the DC bias controller 20 is connected to the intensity modulator 19 through a cable. ...

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Abstract

Disclosed is a 1.7 mum band picosecond double pulse fiber light source, belonging to the field of biomedical light sources. In order to solve the problems of complex assembly, poor environmental stability and difficulty in realizing double pulses in the prior art, a 1550 nm band laser, an intensity modulator, an erbium-doped fiber amplifier, a high nonlinear fiber and 1.7 mum band filter are connected in sequence by fibers; the electrical port of an arbitrary waveform generator is connected to a microwave amplifier, and the microwave amplifier is connected to the intensity modulator; a direct-current bias controller is connected to the intensity modulator; the tail end of the 1.7 mum band filter is an output end of the light source. The light source has a wide application prospect in the fields of bio-therapy, mid-infrared lasers and the like.

Description

technical field [0001] The invention relates to a tunable light source in a biological special wave band, in particular to a picosecond double-pulse optical fiber light source in a 1.7 μm wave band, belonging to the field of biomedical light sources. Background technique [0002] The 1.7μm band is in the trough between the two water absorption peaks of 1.45μm and 1.9μm, and it is also in the high absorption peak of fat and collagen. Since biological tissues contain a large number of water molecules, the detection imaging instrument based on the 1.7μm band light source has low absorption loss and large imaging depth. Therefore, the 1.7μm band light source has important applications in optical coherence tomography (OCT), multiphoton fluorescence microscopy (MFLM), laser surgery and other fields. In addition to biomedical research, since the 1.7μm band covers the resonance band (1720nm) of some polymer molecules, it can be used for laser processing and laser shaping. The 1.7μ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/067H01S3/11
CPCH01S3/067H01S3/11
Inventor 张鹏吴迪李晓燕张欣梦王大帅刘闯王天枢张立中佟首峰姜会林
Owner CHANGCHUN UNIV OF SCI & TECH
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