The effects of temperature on the excited state absorption of erbium ions around 800 nm in germanosilicate optical fiber were studied at 300 and 77 K. Backward amplified spontaneous emission and upconversion fluorescence were monitored tuning the pump wavelength in the absorption band 4I15/2→4I9/2. Optimal pump wavelength for backward amplified spontaneous emission was experimentally obtained, which was temperature dependent. Thermal population in the Stark levels was found to affect the excited state absorption of the erbium ions resulting in shift of optimal pump wavelength and change in conversion efficiency.
|Number of pages||6|
|Journal||Journal of Non-Crystalline Solids|
|Publication status||Published - 1999 Nov 2|
|Event||Proceedings of the 1998 Symposium on Advances in Photonic Glasses - Kyongju, Korea|
Duration: 1998 Sept 20 → 1998 Sept 23
Bibliographical noteFunding Information:
This study was partly supported by UFON, an ERC program in K-JIST sponsored by KOSEF.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry