Ultrabroadband midinfrared generation by using group-velocity-dispersion tailoring in a Bragg reflection waveguide for a difference-frequency-generation process

2009 ◽  
Vol 48 (30) ◽  
pp. 5678 ◽  
Author(s):  
Ritwick Das ◽  
K. Thyagarajan
Keyword(s):  
Group Velocity ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Bragg Reflection ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Generation Process ◽  
Frequency Generation

Theoretical analysis of terahertz generation in periodically inverted nonlinear crystals based on cascaded difference frequency generation process

2015 ◽  
Vol 29 (02) ◽  
pp. 1450263 ◽  
Author(s):  
Chen-Fei Hu ◽  
Kai Zhong ◽  
Jia-Lin Mei ◽  
Mao-Rong Wang ◽  
Shi-Bei Guo ◽  
...  
Keyword(s):  
Gallium Phosphide ◽  
Wave Equations ◽  
Difference Frequency Generation ◽  
Pump Intensity ◽  
Difference Frequency ◽  
Generation Process ◽  
Coupled Wave Equations ◽  
Wave Vector Mismatch ◽  
Frequency Generation ◽  
Absorption Wave

The characteristics of terahertz (THz) generation based on cascaded difference frequency generation (DFG) process in periodically inverted gallium arsenide ( GaAs ) and gallium phosphide ( GaP ) is calculated from coupled wave equations, in which the output enhancement factors are 5.4 and 3.9 in the two crystals, respectively, compared with DFG without cascading. The optimal interaction length, influence of crystal absorption, wave vector mismatch and pump intensity are analyzed. A short discussion on wavelength tuning is also given. The calculated optimal operating parameters and conclusions can provide good directions for the experimental design.

Difference-frequency generation in AlGaAs Bragg reflection waveguides

2010 ◽  
Vol 35 (14) ◽  
pp. 2334 ◽  
Author(s):  
Jun-Bo Han ◽  
Payam Abolghasem ◽  
Dongpeng Kang ◽  
Bhavin J. Bijlani ◽  
Amr S. Helmy
Keyword(s):  
Bragg Reflection ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Frequency Generation ◽  
Bragg Reflection Waveguides
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