All-fiber laser pulse phase modulation device

A laser pulse and phase modulation technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as limited processing technology, and achieve the effect of increasing modulation amount, compact structure, and easy adjustment

Active Publication Date: 2017-03-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The modulation depth of the phase modulator is the ratio of the applied voltage to the half-wave voltage, but limited by the processing technology, the modulation depth of the phase modulator cannot well meet the needs of generating chirped pulses

Method used

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  • All-fiber laser pulse phase modulation device
  • All-fiber laser pulse phase modulation device
  • All-fiber laser pulse phase modulation device

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0040] see first figure 1 , figure 1 It is a structural schematic diagram of the all-fiber laser pulse phase modulation device of the present invention. It can be seen from the figure that the all-fiber laser pulse phase modulation device of the present invention includes a synchronous delay controller 1, a 2×2 optical switch 2, a bandpass filter 3, an optical fiber amplifier 4, an adjustable optical delay line 5, and an optical fiber phase modulator 6. Electric modulation signal generator 7, optical fiber isolator 8, first optical fiber beam splitter 9 and second optical fiber beam splitter 10, 2×2 optical switch 2, bandpass filter 3, and optical fiber amplifier 4 successively connected in sequence , the second optical fiber splitter 10, the adjustable optical delay line...

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Abstract

A modulation device for the phase of a all-fiber laser pulse comprises a synchronous delay controller, a 2*2 photoswitch, a band-pass filter, an optical fiber amplifier, a variable optical delay line, a fiber optic phase modulator, an electrical modulation signal generator, a fiber optic isolator, a first fiber optic beam splitter and a second fiber optic beam splitter. The phase of the laser pulse is modulated repeatedly through using a structure of an all-fiber ring cavity, and the phase of the laser pulse is modulated as required by using the synchronous delay controller and the electrical modulation signal generator. The modulation device has the advantages of adopting an all-fiber structure, being compact in structure, being simple and flexible, and being capable of obtaining laser pulses with any phase change.

Description

technical field [0001] The invention relates to laser pulses, in particular to an all-fiber laser pulse multiple phase modulation device, which uses a fiber optic phase modulator to modulate the phase of the laser pulse to change the phase change of the pulse, thereby obtaining a device for laser pulses with arbitrary phase changes. Its advantages are all-fiber, compact structure, simple and flexible, and can obtain laser pulses with arbitrary phase changes. Background technique [0002] High-energy ultrashort laser pulses are widely used in various fields such as laser processing, ultrafast spectroscopy, medicine, and high-energy physics. For example, ultra-short laser processing technology has attracted widespread attention at home and abroad in recent years. The heat-free deposition and non-contact characteristics during the interaction between short laser pulses and substances have greatly improved the controllability of processing morphology, processing accuracy and sur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01
Inventor 乔治汪小超郭跃张玉奇汪超范薇
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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