Double quasi phase matching for both optical parametric oscillator and difference frequency generation
| Autor: | XiaoYun Li, Fan Yang, Wei Quan Zhang |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Quasi-phase-matching
Physics business.industry Physics::Optics Nonlinear optics Grating Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Optical axis Wavelength Optics law Blazed grating Optical parametric oscillator Group velocity Electrical and Electronic Engineering Physical and Theoretical Chemistry business |
| Zdroj: | Optics Communications. 282:1406-1411 |
| ISSN: | 0030-4018 |
| Popis: | We present simultaneous phase matching of optical parametric oscillator (OPO) and difference frequency generation (DFG), using a noncollinear interaction in periodically poled crystal with single grating. Selecting proper grating period Λ and titled angle ξ between the grating vector G and the optical axis of crystal, the noncollinear scheme provides double phase matching solutions over continuous regions of the midwave infrared spectrum. At certain wavelength regions, for DFG process the group velocities between interaction pulses are matching and the phase matching bandwidth reaches maximum. Selecting the different grating period, the broadband midwave tuning and better gain spectrum can be obtained at different wavelength range. For the certain period grating the conversion efficiency is higher. Hence, using the double phase matching configuration, the broadband tunable midwave infrared wave can be produced in single grating. But the configurations have a relatively narrow angular bandwidth. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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