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High-pulse-repetition-frequency ultra-short laser pulse system

A technology of ultra-short laser and pulse system, which is applied to lasers, laser components, phonon exciters, etc., and can solve problems such as difficult mode locking

Inactive Publication Date: 2012-09-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the mode-locking technology and time-division multiplexing technology are used in the middle of the system, this requires the system to have extremely high synchronization precision control capabilities; and the mode-locking of the beam in the optical fiber is difficult to achieve

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Embodiment Construction

[0019] The present invention is described in detail below in conjunction with accompanying drawing and embodiment, and present embodiment is carried out under the premise of technical scheme of the present invention, has provided detailed embodiment and specific operation process, but protection scope of the present invention is not limited to the following the described embodiment.

[0020] figure 1 It is a schematic diagram of the optical path of Embodiment 1 of the high repetition rate ultrashort laser pulse system of the present invention. It can be seen from the figure that the high-repetition-frequency ultrashort laser pulse system of the present invention adopts a single longitudinal mode laser 1 as a light source, and its composition also includes a first photoelectric switch 2 and a second photoelectric switch 2 sequentially arranged along the direction of the pulsed light output by the single longitudinal mode laser 1. Photoelectric switch 3, first ytterbium-doped f...

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Abstract

The invention discloses a high-pulse-repetition-frequency ultra-short laser pulse system. A single-longitudinal-mode laser is taken as a light source. The high-pulse-repetition-frequency ultra-short laser pulse system comprises a dislocated clipping mechanism and a beam splitting-phase modulating-beam combining pulse compression mechanism, wherein the dislocated clipping mechanism is formed by connecting a first photoelectric switch and a second photoelectric switch in series; and the pulse compression mechanism comprises an optical fiber beam splitter, a random wave generator, a phase modulating device and an optical fiber beam combiner. The system is simple in structure, two photoelectric switches can be directly used for generating high-pulse-repetition-frequency laser pulses of shorter pulse widths, two or more paths of phase-modulated optical pulses can be used for generating shorter high-pulse-repetition-frequency laser pulse signals after beam combination, and the widths, repetition frequencies and pulse waveforms of pulses are optionally adjustable.

Description

technical field [0001] The invention relates to an ultrashort laser pulse, in particular to a high repetition frequency ultrashort laser pulse system, which can output adjustable, high repetition frequency and ultrashort pulse laser with high efficiency. Background technique [0002] At present, there are two commonly used methods for generating high-frequency ultrashort laser pulses. The first is the traditional mode-locking technique. This method is limited by the size of the optical components and the response time of the modulation device, and the repetition rate is difficult to reach GHz. Moreover, the system structure of this method is complex, and the ultrashort laser pulse width and repetition rate cannot be easily changed. The second is to use a high-frequency photoelectric switch to directly chop the continuous single longitudinal mode laser. This technology is easy to realize the adjustment of ultrashort laser pulse width and repetition rate. However, affected...

Claims

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Application Information

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IPC IPC(8): H01S3/11
Inventor 郑君王世伟徐剑秋
Owner SHANGHAI JIAO TONG UNIV
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