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Carrier envelope phase locking device for femtosecond pulse laser

A carrier envelope phase, femtosecond pulse technology, applied in lasers, laser components, phonon exciters, etc.

Active Publication Date: 2015-12-23
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Description
  • Claims
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Problems solved by technology

[0004] In order to precisely control the conductivity of filaments, one of the current problems is to precisely lock the carrier envelope phase of the femtosecond pulsed laser

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  • Carrier envelope phase locking device for femtosecond pulse laser
  • Carrier envelope phase locking device for femtosecond pulse laser
  • Carrier envelope phase locking device for femtosecond pulse laser

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0036] figure 1 It is the optical path diagram of the carrier envelope phase locking device of the femtosecond pulsed laser in the first embodiment of the present invention. The carrier envelope phase locking device 10 of femtosecond pulsed laser includes a hollow fiber 11 , a wedge 12 , a chirp compressor 13 , an f-2f interferometer 14 and a carrier envelope phase adjustment device 15 .

[0037] The femtosecond amplified laser 100 is a Kerr lens mode-locked femtosecond laser using Ti:Sapphire laser crystal as the gain medium. It emits a frequency of 1kHz, a single pulse energy of 0.8mJ, a spectral range of 730nm to 830nm, and a pulse width of 25 femtoseconds. seconds of the femtosecond pulsed laser L1.

[0038] The femtosecond pulse...

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Abstract

The invention provides a carrier envelope phase locking device for a femtosecond pulse laser, and the device comprises a self-phase modulator which is used for enabling a first femtosecond pulse laser spectrum emitted by a femtosecond pulse laser to be broadened, and emitting second femtosecond pulse laser; a carrier envelope phase adjustment element which is used for enabling the second femtosecond pulse laser to be divided into third femtosecond pulse laser and fourth femtosecond pulse laser, and adjusting the carrier envelope phase of the third femtosecond pulse laser; a negative dispersion which is used for enabling the pulse width of the third femtosecond pulse laser to be compressed into fifth femtosecond pulse laser at a sub-10 femtosecond order; a carrier envelope phase measurement apparatus which is used for measuring the carrier envelope phase of the fourth femtosecond pulse laser; and a carrier envelope phase adjustment apparatus which is used for adjusting the carrier envelope phase of the first femtosecond pulse laser according to the carrier envelope phase of the fourth femtosecond pulse laser. The device achieves the precise locking of the carrier envelope phase of the femtosecond pulse laser.

Description

technical field [0001] The invention relates to a laser optical device, in particular to a femtosecond pulsed laser optical device. Background technique [0002] Since A. Braun first observed the phenomenon of filaments formed when the femtosecond pulsed laser was transmitted in the air (that is, the phenomenon of filamentation) in 1996, researchers began to study the principle of femtosecond laser-driven filamentation and widely used it In the field of atmospheric measurement, such as the measurement of atmospheric pollutants, indoor air detection and toxic gas detection, etc. There are two main physical mechanisms at work in the filament formation process: self-focusing effect and self-defocusing effect. Filamentation occurs when the self-focusing effect produced by the dielectric Kerr effect is balanced with the self-defocusing effect formed by the plasma produced by beam diffraction and air ionization. Gas filamentation involves many complex linear and nonlinear proces...

Claims

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Application Information

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IPC IPC(8): H01S3/098H01S3/10
Inventor 魏志义汪礼锋滕浩鲁欣陈式有
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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