scholarly journals Simultaneous Generation of Two Pairs of Stokes and Terahertz Waves from Coupled Optical Parametric Oscillations with Quasi-Phase-Matching

Crystals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 323 ◽  
Author(s):  
Zhongyang Li ◽  
Lian Tan ◽  
Yongjun Li ◽  
Bin Yuan ◽  
Silei Wang ◽  
...  
Keyword(s):  
Wave Equations ◽  
Photon Flux ◽  
Phase Matching ◽  
Terahertz Waves ◽  
Simultaneous Generation ◽  
Optical Parametric ◽  
Coupled Wave Equations ◽  
Quasi Phase Matching ◽  
Parametric Oscillations ◽  
Thz Waves

We present a theoretical investigation on simultaneous generation of two pairs of Stokes and terahertz (THz) waves from coupled optical parametric oscillations (OPOs) with a quasi-phase-matching (QPM) scheme. The two pairs of Stokes and THz waves are generated by stimulated polariton scattering (SPS) from periodically-inverted GaP. By analyzing the QPM conditions of coupled OPOs we find that the two THz waves with any frequency below the transverse optical (TO) mode frequency of GaP can be simultaneously generated with a suitable pump wavelength. We calculate the photon flux densities of the two THz waves by solving the coupled wave equations. The calculation results indicate that the two THz waves can be efficiently generated with high pump intensities, particularly in lower THz frequency band.

scholarly journals Simultaneous Generation of Two Orthogonally Polarized Terahertz Waves by Stimulated Polariton Scattering with a Periodically Poled LiNbO3 Crystal

Crystals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 304 ◽  
Author(s):  
Zhongyang Li ◽  
Silei Wang ◽  
Mengtao Wang ◽  
Bin Yuan ◽  
Pibin Bing
Keyword(s):  
Photon Flux ◽  
Phase Matching ◽  
Type I ◽  
Linbo3 Crystal ◽  
Periodically Poled ◽  
Simultaneous Generation ◽  
Thz Wave ◽  
Ppln Crystal ◽  
Coupled Wave Equations ◽  
Thz Waves

We present a theoretical investigation of the simultaneous generation of two orthogonally polarized terahertz (THz) waves by stimulated polariton scattering (SPS) with a periodically poled LiNbO3 (PPLN) crystal. The two orthogonally polarized THz waves are generated from SPS with A1 and E symmetric transverse optical (TO) modes in a LiNbO3 crystal, respectively. The parallel polarized THz wave is generated from A1 symmetric TO modes with type-0 phase-matching of e = e + e, and the perpendicular polarized THz wave is generated from E symmetric TO modes with type-I phase-matching of e = o + o. The two types of phase-matching of e = e + e and e = o + o can be almost satisfied simultaneously by accurately selecting the poling period of the PPLN crystal. We calculate the photon flux density of the two orthogonally polarized THz waves by solving the coupled wave equations. The calculation results indicate that the two orthogonally polarized THz waves can be efficiently generated, and the relative intensities between the two orthogonally polarized THz waves can be modulated.

scholarly journals Lumped Dissipation Induced Quasi-Phase Matching for Broad and Flat Optical Parametric Processes

2019 ◽  
Vol 11 (6) ◽  
pp. 1-8
Author(s):  
Hanwen Hu ◽  
Lei Zhang ◽  
Chi Zhang ◽  
Yuntian Chen ◽  
Jing Xu ◽  
...  
Keyword(s):  
Phase Matching ◽  
Optical Parametric ◽  
Quasi Phase Matching ◽  
Parametric Processes

Refractive Index Measurements of Barium Titanate From .4 to 5.0 Microns and Implications for Periodically Poled Frequency Conversion Devices

1997 ◽  
Vol 484 ◽  
Author(s):  
David E. Zelmon ◽  
David L. Small ◽  
Peter Schunemann
Keyword(s):  
Refractive Index ◽  
Barium Titanate ◽  
Optical Parametric Oscillator ◽  
Frequency Conversion ◽  
Phase Matching ◽  
Optical Frequency ◽  
Periodically Poled ◽  
Optical Frequency Conversion ◽  
Optical Parametric ◽  
Quasi Phase Matching

AbstractBarium titanate has recently been suggested as a possible candidate for use in periodically poled optical frequency conversion devices. We report refractive index measurements which are critical to periodically poled device designers and present quasi phase matching loci which can be used to design an optical parametric oscillator in periodically poled barium titanate

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