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Optical parametric device based on random phase matching in polycrystalline medium

A technology of optical parameters and devices, applied in laser parts, optics, lasers, etc., can solve the problem of QPM nonlinear material size limitation and high cost of QPM materials

Active Publication Date: 2019-12-06
UNIV OF CENT FLORIDA RES FOUND INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of QPM materials is very high compared to standard monocrystalline and polycrystalline
Technical limitations limit the size of QPM nonlinear materials

Method used

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  • Optical parametric device based on random phase matching in polycrystalline medium
  • Optical parametric device based on random phase matching in polycrystalline medium
  • Optical parametric device based on random phase matching in polycrystalline medium

Examples

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Embodiment Construction

[0027] Reference is now made in detail to the disclosed system. Where possible, the same or similar reference numerals are used in the drawings and the description to indicate the same or similar components or steps. The drawings are in simplified form and not in any way drawn to precise scale.

[0028] refer to image 3 , an exemplary schematic diagram of an optical parametric device (OPD) 10 of the present invention based on a disordered χ (2) Random phase matching (RQPM) in polycrystalline materials such as ceramic-based nonlinear optical elements NOE 25. The NOE 25 is configured to down-convert internally coupled pump radiation of a first frequency ω1 generated by the optical pump 12 to output signal radiation and idler radiation 26 of at least one second lower frequency ω2 by the RQPM process. OPD 10 may be configured as an optical parametric generator (OPG) or an optical parametric oscillator (OPO).

[0029] As shown in FIG. 1 , the configuration of OPD 10 represents ...

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Abstract

An optical parametric device (OPD), which is selected from an optical parametric oscillator (OPO) or optical parametric generator (OPG), is configured with a nonlinear optical element (NOE) which converts an incoupled pump radiation at first frequency into output signal and idler radiations at one second frequency or different second frequencies, which is / are lower than the first frequency, by utilizing nonlinear interaction via a random quasi-phase matching process (RQPM-NOE). The NOE is made from a nonlinear optical material selected from optical ceramics, polycrystals, micro and nanocrystals, colloids of micro and nanocrystals, and composites of micro and nanocrystals in polymer or glassy matrices. The nonlinear optical material is prepared by modifying a microstructure of the initial sample of the NOE such that an average grain size is of the order of a coherence length of the three-wave interaction which enables the three wave nonlinear interaction with a highest parametric gain achievable via the RQPM process

Description

technical field [0001] The present disclosure relates to optical parametric devices (OPDs). Specifically, the present disclosure presents an OPD based on random phase matching in polycrystalline dielectric materials with quadratic nonlinearity. The present disclosure also relates to the microstructure of polycrystalline materials and methods of characterizing and optimizing the microstructure. Background technique [0002] Nonlinear frequency conversion via three-wave mixing, including second harmonic generation (SHG), sum and difference frequency generation (SFG and DFG, respectively), optical parametric generation (OPG), etc., is one of the cornerstones of laser technology . The OPG that is the subject of this disclosure must have a nonlinear optical effect (NOE) that downconverts the laser radiation (pump light) to lower frequency output radiation (signal light and idler light ( idler)). In particular, in NOE crystals, pump photons decay into lower-energy signal and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/39G02F1/355
CPCG02F1/3544G02F1/3551G02F1/39G02F1/1335G02F1/3548G02F1/3534G02F1/3556H01S3/109H01S3/1623H01S3/1628
Inventor 康斯坦丁·沃多皮亚诺夫谢尔盖·瓦西里夫迈克尔·米罗夫
Owner UNIV OF CENT FLORIDA RES FOUND INC
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