Improvement to Sellmeier equation for periodically poled LiNbO3 crystal using mid-infrared difference-frequency generation

✍ Scribed by L.H. Deng; X.M. Gao; Z.S. Cao; W.D. Chen; Y.Q. Yuan; W.J. Zhang; Z.B. Gong

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 172 KB
• Volume: 268
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2006.06.082

✦ Synopsis

Improvement to the Sellmeier equation for the extraordinary index of periodically poled LiNbO 3 crystal (PPLN) is reported. The equation has been improved based on a continuous tunable mid-infrared radiation realizing in a PPLN crystal using difference-frequency-generation (DFG) and quasi-phase-matching (QPM) technique. The improved equation is suitable to estimate the QPM conditions of PPLN crystal for temperatures between 25 °C and 180 °C and mid-infrared wavelengths ranging from 2.8 lm to 4.8 lm.