scholarly journals Electrically Micro‐Polarized Amorphous Sodo‐Niobate Film Competing with Crystalline Lithium Niobate Second‐Order Optical Response

2020 ◽  
Vol 8 (13) ◽  
pp. 2000202
Author(s):  
Lara Karam ◽  
Frédéric Adamietz ◽  
Dominique Michau ◽  
Claudia Gonçalves ◽  
Myungkoo Kang ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Optical Response ◽  
Second Order

WAVELENGTH CONVERSION OF AN INFRARED SIGNAL THROUGH CASCADED SECOND-ORDER NONLINEARITY IN A LITHIUM-NIOBATE CHANNEL WAVEGUIDE

2000 ◽  
Vol 09 (01) ◽  
pp. 11-20 ◽  
Author(s):  
I. CRISTIANI ◽  
M. RINI ◽  
A. RAMPULLA ◽  
G. P. BANFI ◽  
V. DEGIORGIO
Keyword(s):  
Lithium Niobate ◽  
Pulse Energy ◽  
Wavelength Conversion ◽  
Second Order ◽  
Channel Waveguide ◽  
Phase Matching ◽  
Order Process ◽  
Pump Pulse Energy ◽  
Second Order Nonlinearity ◽  
Second Order Process

We describe a wavelength conversion experiment (generation of a pulse at the wavelength λp - Δλ from a signal at λp+Δλ under the action of a pump at λp) performed through cascaded second-order process in a lithium niobate channel waveguide. With a 58-mm-long Ti diffused channel waveguide, λp=1.1 μ m (the wavelength of phase matching for the first step of sh generation), Δλ of several nanometers and 20 ps pulse duration, wavelength conversion with unit efficiency is obtained with a pump pulse energy of the order of 102 pJ. The experimental results are successfully interpreted by making use of modal analysis and solving the appropriate nonlinear equations.

Regioregularity Increases Second-Order Nonlinear Optical Response of Polythiophenes in Solution

2015 ◽  
Vol 119 (32) ◽  
pp. 18513-18517 ◽  
Author(s):  
Steven Deckers ◽  
Joost Steverlynck ◽  
Pieter Willot ◽  
Stefaan Vandendriessche ◽  
Guy Koeckelberghs ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Response ◽  
Second Order ◽  
Nonlinear Optical Response
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