Open AccessThermal characteristics of second harmonic generation by phase matched calorimetry
Author(s) -
Hwan Hong Lim,
Sunao Kurimura,
Keisuke Noguchi,
Ichiro Shoji
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.018268
Subject(s) - dephasing , second harmonic generation , optics , materials science , thermal , calorimetry , phase (matter) , surface second harmonic generation , gaussian , optoelectronics , physics , thermodynamics , laser , condensed matter physics , quantum mechanics
We analyze a solution of the heat equation for second harmonic generation (SHG) with a focused Gaussian beam and simulate the temperature rise in SHG materials as a function of the second harmonic power and the focusing conditions. We also propose a quantitative value of the heat removal performance of SHG devices, referred to as the effective heat capacity Cα in phase matched calorimetry. We demonstrate the inverse relation between Cα and the focusing parameter ξ, and propose the universal quantity of the product of Cα and ξ for characterizing the thermal property of SHG devices. Finally, we discuss the strategy to manage thermal dephasing in SHG using the results from simulations.