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Method for full light-operated accurately synchronizing femtosecond, picosecond and billisecond laser impulse with multi-wavelength

A precise synchronization and laser pulse technology, which is applied in the direction of lasers, laser components, and the structure/shape of active media, can solve the problems of difficult spatial arrangement of synchronous lasers, single wavelength, and inability to achieve femtosecond pulse synchronization.

Inactive Publication Date: 2009-07-08
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The laser structure sharing a non-linear medium makes the traditional laser synchronization technology only suitable for a single wavelength or a difference of only tens of nanometers, the wavelength adjustable range is very limited, and it is impossible to achieve femtosecond, picosecond, nanosecond adjustable pulse width pulse Synchronize
In addition, the spatial arrangement of traditional synchronous lasers is very difficult, and the compact spatial arrangement cannot realize remote synchronous control

Method used

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  • Method for full light-operated accurately synchronizing femtosecond, picosecond and billisecond laser impulse with multi-wavelength
  • Method for full light-operated accurately synchronizing femtosecond, picosecond and billisecond laser impulse with multi-wavelength
  • Method for full light-operated accurately synchronizing femtosecond, picosecond and billisecond laser impulse with multi-wavelength

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Effect test

Embodiment 1

[0023] Embodiment 1: Using Ti:S laser and Erbium-doped optical fiber to realize laser synchronization.

[0024] This scheme realizes the synchronization of a femtosecond pulse laser and a fiber ring laser, and the output pulse width of the fiber ring laser is adjustable in the range of picoseconds to nanoseconds. For example, the femtosecond pulse laser is a Ti:S laser, and the fiber ring laser is an erbium-doped fiber laser. The synchronous output pulse is a Ti:S femtosecond laser pulse with a central wavelength of 800nm ​​and an erbium-doped fiber laser pulse with a central wavelength of 1550nm, and the pulse width of this 1550nm laser is adjustable in the range of picoseconds to nanoseconds.

[0025] Such as figure 2 As shown, the specific implementation method steps are as follows:

[0026] (1) The femtosecond pulsed laser output from the Ti:S laser 1 is coupled into the single-mode fiber 3 through the lens 2 .

[0027] (2) The femtosecond pulsed laser is coupled into ...

Embodiment 2

[0038] Embodiment 2: Using Cr:F laser to synchronize two fiber ring lasers doped with erbium and doped with ytterbium.

[0039]This solution realizes the synchronization of one femtosecond pulse laser and two fiber ring lasers. The output wavelengths of the two fiber ring lasers can be the same or different, and the output pulse width can be adjusted from picoseconds to nanoseconds. For example, the femtosecond pulse laser is a Cr:F laser, and the two ring fiber lasers are Ytterbium-doped fiber laser and Erbium-doped fiber laser respectively. The synchronous output pulses are Cr:F femtosecond pulse laser with a central wavelength of 1250nm, ytterbium-doped fiber laser pulse with a central wavelength of 1040nm, and erbium-doped fiber laser pulse with a central wavelength of 1550nm. The pulse width of ytterbium-doped fiber laser and erbium-doped fiber laser is independently adjustable in the picosecond to nanosecond range.

[0040] Such as image 3 As shown, the method steps ...

Embodiment 3

[0056] This solution realizes the synchronization of one femtosecond pulse laser and multiple fiber ring lasers, and the synchronization of femtosecond pulses of arbitrary wavelengths with multiple picosecond and nanosecond pulses of arbitrary wavelengths. Specific implementation is similar to embodiment two.

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Abstract

The invention relates to the technical field of ultrafast laser, in particular to a method for full optical control and precise synchronization of femtosecond, picosecond, nanosecond laser pulses with various wavelengths. The method adopts an injection-locked laser synchronization structure, uses the output light of a femtosecond pulse laser as control light, injects the output light into a fiber annular laser, utilizes the nonlinear effect of fiber to have crossed phase modulation or gain modulation control and realizes laser synchronization. The method has the advantages that the length of the fiber injected by femtosecond pulse can be arbitrarily set to realize long-distance laser pulse synchronization; according to elements doped to the gain fiber of the selected annular laser, the method can realize the synchronization of the laser pulse with various wavelengths; and through a translation platform for controlling the length of a cavity of the optical annular laser, the method can realize the output of mode-locked pulse with adjustable width from picosecond to nanosecond, keep synchronization between the output pulse and the injected femtosecond pulse, control a plurality of the fiber annular lasers and realize synchronization between a beam of femtosecond laser and a plurality of beams of laser with different wavelengths and pulse widths.

Description

technical field [0001] The invention relates to the technical field of ultrafast lasers, in particular to a technique for synchronizing femtosecond, picosecond and nanosecond pulsed lasers with multiple wavelengths using an all-optical method. Background technique [0002] With the development of laser technology, human beings have a deeper understanding of laser, and the requirements for laser controllable parameters are getting higher and higher. With the emergence of Q-switched and mode-locked pulsed lasers, the peak power density of the laser can break through 10 21 W / cm 2 , and moving towards higher energies. While increasing the laser power, the controllable accuracy of the laser characteristics is becoming more and more precise. Scientists have been able to control the relative time jitter of two or more laser pulses in the order of femtoseconds or even attoseconds. Synchronous laser, as the name implies, the two laser pulses are synchronized in time, and the rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/37H01S3/108H01S3/067
Inventor 郝强李文雪黎瑶闫明曾和平
Owner EAST CHINA NORMAL UNIV
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