Supercontinuum pulse laser measurement device based on nonlinear nano material and method

A technology of ultrashort pulse laser and nanomaterials, applied in the field of photonics, can solve the problems of supercontinuum pulse laser width, inconvenient measurement and use, etc.

Active Publication Date: 2014-05-07
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the very wide spectrum of the supercontinuum pulsed laser, it also brings inconvenience in measurement and use.

Method used

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  • Supercontinuum pulse laser measurement device based on nonlinear nano material and method
  • Supercontinuum pulse laser measurement device based on nonlinear nano material and method
  • Supercontinuum pulse laser measurement device based on nonlinear nano material and method

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Embodiment Construction

[0035] Below we will introduce the implementation of the method in detail in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, the supercontinuum pulsed laser measurement device based on nonlinear nanomaterials includes a 1 / 2 wave plate 1, a polarization splitting device 2, an electric stepping motor 3, a first high reflection mirror 4, a second high reflection mirror 5, The third highly reflective lens 6, laser line filter 7, focusing lens 8, photonic crystal fiber 9, collimator lens 10, optical filter 11, fourth highly reflective lens 12, fifth highly reflective lens 13, achromatic focusing Lens 14, nonlinear nano material 15, collecting and focusing lens 16, spectrometer 17, PC 18.

[0037] The 1 / 2 wave plate 1 is set directly in front of the polarization beam splitting device 2 to change the polarization splitting ratio; the ultrashort pulse laser passes through the 1 / 2 wave plate and then enters the polarization beam splitting device 2 for lig...

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Abstract

The invention discloses a supercontinuum pulse laser measurement device based on a nonlinear nano material and a method. According to the invention, a 1/2 waveplate, a polarized light splitting device, an electric stepping motor, a first high reflection mirror, a second high reflection mirror, a third high reflection mirror, a laser line light filter, a focusing lens, a photonic crystal optical fiber, a collimating lens, a light filter, a fourth high reflection mirror, a fifth high reflection mirror, an achromatic focusing lens, the nonlinear nano material, a collection focusing lens, a spectrometer and a PC; the optical distance of a detection optical path is changed by an optical delay system, and an excitation optical path transmits supercontinuum pulse laser; through the laser line light filter, excitation-detection optical paths are integrated and are converged to the nano material through a focusing system, so as to excite sum frequency spectrums; and through a mobile stepping motor, the sum frequency spectrums are synchronously detected, and the characteristics of a supercontinuum laser pulse are completely detected.

Description

technical field [0001] The invention belongs to the technical field of photonics, and in particular relates to a supercontinuum pulsed laser measurement device and method based on nonlinear nanomaterials. Background technique [0002] Pulse width less than picoseconds (10 -12 Seconds) lasers are often referred to as ultrashort pulse lasers. Due to the ultra-strong instantaneous power, ultrashort pulse laser is an indispensable experimental tool in modern biology, physics and other scientific fields. In recent years, as the production of photonic crystal fibers has become increasingly mature, supercontinuum pulsed lasers generated by ultrashort pulse laser excitation of photonic crystal fibers have emerged in the fields of sensing and imaging. Because supercontinuum pulsed laser has a very wide spectrum and good spatial coherence, it has attracted more and more attention. However, due to the very wide spectrum of supercontinuum pulsed laser, it also brings inconvenience in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
Inventor 何赛灵于佳鑫蔡夫鸿
Owner ZHEJIANG UNIV
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