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Adjustable femtosecond pulse generator in dual wavelengh synchronized accuratly

A pulse generator and femtosecond laser technology, applied in lasers, phonon exciters, laser parts, etc., can solve the problems of inability to meet ultrafast disciplines, and achieve the effects of easy start-up, simple operation and stable operation

Inactive Publication Date: 2007-02-21
TIANJIN UNIV
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Problems solved by technology

[0002] At present, the precision of commonly used electronic synchronization devices (requiring a series of electronic movement processes such as electronic triggering) is only on the order of nanoseconds or hundreds of picoseconds, which cannot meet the needs of some ultra-fast subjects. Therefore, it is urgent to improve the synchronization precision.

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  • Adjustable femtosecond pulse generator in dual wavelengh synchronized accuratly
  • Adjustable femtosecond pulse generator in dual wavelengh synchronized accuratly
  • Adjustable femtosecond pulse generator in dual wavelengh synchronized accuratly

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Embodiment Construction

[0018] The present invention is described in detail below in conjunction with accompanying drawing:

[0019] The whole set of instruments consists of a titanium-doped sapphire laser 1 that can stably output femtosecond laser pulses with a pulse width of 15-100 fs, a single pulse energy of 2-10 nJ, and a repetition rate of 60-120 MHz, and an isolator 2 that prevents the feedback light from affecting the mode-locking (by Faraday rotation) device, half-wave plate and polarizer), which can provide negative dispersion near the center wavelength of 800nm ​​of the femtosecond laser output by the titanium-sapphire mode-locked laser. Microstructure fiber 6 with enhanced nonlinear effect and single-step precision Stage precision time delay compensation line 10 is composed. First, the femtosecond laser pulse output by the femtosecond laser is output to the coupling lens 7 through the isolator. The 800nm ​​femtosecond laser is split into two beams using a beam splitter 4 with a reflectiv...

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Abstract

The laser pulse generator includes following parts and structures: laser in femtosecond; isolator setup at output end of the laser in femtosecond; holophote and beam splitter setup in sequence from the output end of the isolator; self frequency shift soliton generator composed of coupling lens, microstructure optical fiber and coupling lens is setup on one optical path from beam splitter; filter for passing 1000-1100nm pulse light is setup at output end of the said soliton generator; holophote and delay line of compensating time with accuracy are setup on the other optical path from beam splitter. In simple structure, and stable operation, the invention generates synchronous high precision laser pulse in femtosecond magnitude, which is higher more than three orders of magnitude compared with current electronic pulse synchronizer.

Description

technical field [0001] The invention relates to a precise synchronous double-wavelength adjustable femtosecond laser pulse generator, which belongs to the ultrafast laser pulse generator technology. Background technique [0002] At present, the precision of commonly used electronic synchronization devices (requiring a series of electronic movement processes such as electronic triggering) is only on the order of nanoseconds or hundreds of picoseconds, which cannot meet the needs of some current ultra-fast subjects. Therefore, it is urgent to improve the synchronization precision. And the current new hotspot of nonlinear optical fiber, microstructured optical fiber provides a new technical basis for this technology (provides an all-optical synchronization process). Microstructure fiber, also known as Photonic Crystal fiber, or Hole fiber, is a new type of optical fiber composed of a single material with a periodic micron-scale air hole structure in the cladding. . In this ki...

Claims

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Application Information

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IPC IPC(8): H01S3/00G02B6/00G02F1/35
Inventor 王清月胡明列刘博文柴路
Owner TIANJIN UNIV
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