Modulation-eliminating stimulated Brillouin scattering laser pulse compression apparatus

A technology of stimulated Brillouin and laser pulses, applied in optics, nonlinear optics, instruments, etc., can solve problems such as modulation phenomenon, instability, and poor output waveform quality, so as to improve waveform quality, reduce energy loss, Effect of suppressing output pulse modulation phenomenon

Inactive Publication Date: 2009-08-12
HARBIN INST OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The present invention provides a demodulation stimulated Brillouin scattering laser pulse compression device in order to overcome the defects of poor output waveform quality, instability and modulation phenomenon of the SBS pulse compression system in the prior art

Method used

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  • Modulation-eliminating stimulated Brillouin scattering laser pulse compression apparatus
  • Modulation-eliminating stimulated Brillouin scattering laser pulse compression apparatus
  • Modulation-eliminating stimulated Brillouin scattering laser pulse compression apparatus

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specific Embodiment approach 1

[0009] Specific implementation mode one: combine figure 1 , Figure 4 and Figure 5 Describe this embodiment, this embodiment is by laser source 1, the first 1 / 2 wave plate 2, the first polarizing plate P1, the first 1 / 4 wave plate 4, the first stage compression system 5, the total reflection mirror R, the first Two 1 / 2 wave plate 7, the second polarizer P2, the second 1 / 4 wave plate 9 and the second compression system 10;

[0010] The output end of the laser source 1 outputs the Pump laser pulse to the input end of the first 1 / 2 wave plate 2, and the laser output from the output end of the first 1 / 2 wave plate 2 goes to the input end of the first polarizer P1,

[0011] The first 1 / 2 wave plate 2 and the first polarizer P1 form an energy adjustment system. By adjusting the angle of the first 1 / 2 wave plate 2 and the polarization direction of the first polarizer P1, the energy of the transmitted light can be adjusted. continuous change;

[0012] The input and output termina...

specific Embodiment approach 2

[0018] Embodiment 2: The difference between this embodiment and Embodiment 1 is that both the first-stage compression system 5 and the second-stage compression system 10 adopt a single-cell compression system; other components and connection methods are the same as Embodiment 1.

specific Embodiment approach 3

[0019] Embodiment 3: This embodiment differs from Embodiment 1 in that the first-stage compression system 5 adopts a double-cell compression system, and the second-stage compression system 10 adopts a single-cell compression system. Other compositions and connection methods are the same as those in Embodiment 1.

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Abstract

The invention provides a modulation-eliminating stimulated Brillouin scattering (SBS) laser impulse compression device, which relates to a device for obtaining modulation-free narrow impulse waveforms, and overcomes the defects that the output waveforms of an SBS impulse compression system in the prior art have poor quality, are unstable and are accompanied with modulation phenomenon. A Pump laser impulse is emitted by a laser light source and enters a first-stage compression system after passing through a first half-wave plate, a first polaroid and a first quarter-wave plate, wherein the first Polaroid and the first half-wave plate form an energy regulating system, and the first polaroid and the first quarter-wave plate form an isolated system; and the Pump laser impulse returns to the first polaroid along the same path and is driven into a reflecting mirror by the first polaroid, and the connections of the light paths of the reflecting mirror reflects the light to a second half-wave plate, wherein the second half-wave plate, a second polaroid, a second quarter-wave plate and a second-stage compression system are same as those of the light paths of the first half-wave plate, the first polaroid, the first quarter-wave plate and the first-stage compression system, and the output end of the second polaroid is a pulsed light output end. The modulation-eliminating stimulated Brillouin scattering laser impulse compression device is mainly applied to the energy level transition of a medium material of an optical pump research in spectroscopy.

Description

technical field [0001] The invention relates to a device for obtaining a non-modulated narrow pulse waveform, in particular to a two-stage stimulated Brillouin scattering (SBS) compression system. Background technique [0002] At present, Stimulated Brillouin Scattering (Stimulated Brillouin Scattering) is an important means of obtaining compressed laser pulses. Due to its characteristics of small frequency shift, self-pumping, and phase conjugation, it has important applications in many fields. Potential, such as the compressed SBS laser has the characteristics of short rising edge time, which can be used in optical pumping to study the energy level transition of dielectric materials in spectroscopy; the output SBS laser is phase conjugated light, which has a unique real-time repair laser wavefront The ability of distortion can repair the wavefront distortion caused by the inhomogeneity, deformation and thermal distortion of optical components and laser amplifiers in real t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35
Inventor 吕志伟郭琦朱成禹
Owner HARBIN INST OF TECH
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