Femtosecond vibrational photon echo in CeO2-doped TeO2–Nb2O5–ZnO glass

✍ Scribed by Shian Zhang; Zhenrong Sun; Xihua Yang; Zugeng Wang; Jian Lin; Wenhai Huang; Zhizhan Xu; Ruxin Li

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 387 KB
• Volume: 241
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2004.07.033

✦ Synopsis

Vibrational photon echo decay in the CeO 2 -doped TeO 2 -Nb 2 O 5 -ZnO glass is observed with near-infrared femtosecond laser pulse at the temperature of 7.5 and 300 K. The photon echo signals exhibit an initial fast decay followed by an exponential decay. The anharmonic frequency splitting (D), the dephasing rate (c), the dephasing time (T d ) and the linewidth (C) are obtained. The results show that the dephasing time of the m = 0 ! 1 transition is dominated by the vibration state lifetime T 1l , and the dephasing time of the m = 0 ! 2 transition is determined by both the vibration state lifetime T 2l and the pure dephasing time T Ã 2d .