Periodically poled LiNbO 3 (PPLN) makes available direct and efficient frequency conversion of laser light through quasi-phase matched (QPM) nonlinear optical interactions. For a given PPLN waveguide, the efficiency of frequency conversion strongly depends on QPM, which can be optimized by tuning the wavelength or the temperature. We propose a guided wave device for temperature measurement based on second harmonic generation (SHG) in a PPLN waveguide. Modelling of the device and a preliminary test in a PPLN waveguide fabricated through electric field poling and (APE) annealed proton exchange are reported.
|Titolo:||Design and fabrication of APE - PPLN waveguides for temperature measurement|
|Titolo del libro:||Optics for the quality of life : 19th Congress of the International Commission for Optics|
|Editore:||Society of Photo-optical Instrumentation Engineers|
|Data di pubblicazione:||2003|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1117/12.530336|
|Appare nelle tipologie:||2.1 Contributo in volume (Capitolo o Saggio)|