Quasi phase matching through periodic step structure: modeling of frequency conversion in consideration of heat influence

2012 ◽  
Author(s):  
Takafumi Ohfuchi ◽  
Nobuyuki Hirano ◽  
Hiroya Matsukawa ◽  
Koichiro Nakayama ◽  
Hiroshi Kumagai ◽  
...  
Keyword(s):  
Frequency Conversion ◽  
Phase Matching ◽  
Structure Modeling ◽  
Step Structure ◽  
Quasi Phase Matching

Cathodoluminescence Study of Orientation Patterned GaAs Crystals for Nonlinear Optical Frequency Conversion by Quasi-Phase-Matching

2008 ◽  
Vol 1108 ◽  
Author(s):  
Hector Angulo ◽  
Manuel Avella ◽  
Oscar Martínez ◽  
Juan Jimenez ◽  
Candace Lynch ◽  
...  
Keyword(s):  
Frequency Conversion ◽  
Domain Walls ◽  
Optical Loss ◽  
Hydride Vapor Phase Epitaxy ◽  
Phase Matching ◽  
Light Sources ◽  
Optical Frequency Conversion ◽  
Operating Modes ◽  
Quasi Phase Matching ◽  
Cathodoluminescence Study

AbstractOrientation patterned (OP)-GaAs crystals show promise for use in tunable coherent light sources in the infrared (IR) and terahertz (THz). These structures consist of an alternating array of [001]/[00-1] oriented domains grown by hydride vapor phase epitaxy (HVPE). Material characteristics concerning the propagation losses, the crystal dimensions, and the grating size must be taken into account to implement optical devices for specific wavelength ranges and operating modes (CW or pulsed). The analysis of the main factors contributing to optical loss in the OP crystals is a crucial step toward their use in many promising applications. We present a cathodoluminescence study, where the main defects and their distribution over the OP-GaAs crystals are revealed, with special emphasis paid to the properties of the domain walls.

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

Frequency Doubling and Polarization Coupling Using Birefringence-Phase-Matching and Quasi-Phase-Matching Simultaneously in Single Optical Superlattice

2012 ◽  
Vol 529 ◽  
pp. 81-86 ◽  
Author(s):  
Dong Huang ◽  
Yu Qing Wang ◽  
Jian Yi Luo
Keyword(s):  
Electric Field ◽  
Harmonic Generation ◽  
Frequency Conversion ◽  
Second Harmonic ◽  
Frequency Doubling ◽  
Phase Matching ◽  
Fundamental Wave ◽  
Optical Superlattice ◽  
Quasi Phase Matching ◽  
Dc Electric Field

We proposed a method to simultaneously implement birefringence-phase-matching (BPM) and quasi-phase-matching (QPM) second harmonic generation (SHG) and polarization coupling including six mismatches of wave vectors, in general case, in an optical superlattice (OSL). And the numerical simulations of SHG and polarization coupling in the OSL are carried out. The results indicate that unlike those of SHG processes with only one second harmonic (SH) reported, when one e-polarized fundamental pump is injected into the OSL, another o-polarized fundamental wave, an o-polarized and an e-polarized SHs can be simultaneously generated. The magnitudes of the o-polarized fundamental wave and SHs can be manipulated by an external dc electric field, which is useful when frequency conversion and signal tuning are required simultaneously.

Temperature-insensitive quasi phase matching method for nonlinear frequency conversion

Optik ◽  
2017 ◽  
Vol 139 ◽  
pp. 239-243
Author(s):  
Xun Liu ◽  
Xueju Shen ◽  
Yudan Chen ◽  
Jianling Yin ◽  
Xiaoming Li
Keyword(s):  
Frequency Conversion ◽  
Phase Matching ◽  
Nonlinear Frequency ◽  
Matching Method ◽  
Nonlinear Frequency Conversion ◽  
Quasi Phase Matching

scholarly journals Segmented Composite Optical Parametric Amplification

2020 ◽  
Vol 10 (4) ◽  
pp. 1220
Author(s):  
Mouhamad Al-Mahmoud ◽  
Andon A. Rangelov ◽  
Virginie Coda ◽  
Germano Montemezzani
Keyword(s):  
Frequency Conversion ◽  
Parametric Amplification ◽  
Phase Matching ◽  
Optical Parametric Amplification ◽  
Nonlinear Coupling ◽  
Composite Pulse ◽  
Optical Parametric ◽  
Quasi Phase Matching

We propose a novel optical parametric amplification scheme that combines quasi-phase-matching with a composite pulse approach that involves crystal segments of specific lengths. The presented scheme highly increases the robustness of the frequency conversion against variations of the nonlinear coupling and of the pump, idler, or signal wavelengths, and has therefore the potential to enhance high amplification and broadband operation. Simulation examples applied to LiNbO 3 are given.

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