Temperature optimization for broad-band quasi-phase-matched difference frequency generation

Author

Tang, Xuefeng ; Wu, Zongyan ; Urquhart, Paul

Author_Institution

Dept. of Opt., Ecole Nat. Superieure des Telecommun. de Bretagne, Brest, France

Volume

22

Issue

6

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

1622

Lastpage

1627

Abstract

The temperature-tuning prosperities of quasi-phase-matched (QPM) difference frequency generation (DFG) in a uniform periodically poled LiNbO₃ (PPLN) device are studied theoretically in the near degeneracy limit. Combining the theoretical and numerical analysis results, the paper shows that through the tuning of temperature, the conversion efficiency and bandwidth can be changed considerably. This paper proposes a PPLN device consisting of several segments of different temperature to obtain a more desirable performance for the QPM-DFG. The optimizations for temperature are studied in detail by the use of a cascading technique, and they show that broadening of the conversion bandwidth will reduce the conversion efficiency. A better performance of uniform PPLN can be obtained owing to the reconfigurable and adjustable abilities of multisection temperature tuning.

Keywords

lithium compounds; optical frequency conversion; optical materials; optical phase matching; optical wavelength conversion; optimisation; thermo-optical devices; LiNbO₃; PPLN device; difference frequency generation; periodically poled LiNbO₃; quasiphase-matching; temperature optimization; temperature tuning; Bandwidth; Chirp modulation; Equations; Frequency conversion; Gratings; Optical wavelength conversion; Refractive index; Temperature distribution; Tuning; Wavelength conversion; DFG; Difference frequency generation; QPM; quasi-phase-matching; temperature tuning;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2004.827658

Filename

1303741