中国物理B ›› 2004, Vol. 13 ›› Issue (10): 1728-1732.doi: 10.1088/1009-1963/13/10/027

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Analysis of the laser performance of Tm3+: ZBLAN glass at 1.47μm wavelength

黄莉蕾1, 张伦1, 罗宏雷1, 曹国熹2   

  1. (1)Optoelectronic Division, China Institute of Metrology, Hangzhou 310034, China; (2)Shanghai Institute of Optics & Fine Mechanics, Chinese Academia of Sciences, Shanghai 201800, China
  • 收稿日期:2003-12-09 修回日期:2004-05-19 出版日期:2004-10-20 发布日期:2005-06-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Zhejiang Province, China (Grant No 600087).

Analysis of the laser performance of Tm3+: ZBLAN glass at 1.47μm wavelength

Huang Li-Lei (黄莉蕾)a, Cao Guo-Xi (曹国熹)b, Zhang Lun (张伦)a, Luo Hong-Lei (罗宏雷)a   

  1. a Optoelectronic Division, China Institute of Metrology, Hangzhou 310034, China; b Shanghai Institute of Optics & Fine Mechanics, Chinese Academia of Sciences, Shanghai 201800, China
  • Received:2003-12-09 Revised:2004-05-19 Online:2004-10-20 Published:2005-06-20
  • Supported by:
    Project supported by the Natural Science Foundation of Zhejiang Province, China (Grant No 600087).

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摘要： A formula for the threshold energy of a four-level-system laser in Tm^{3+} doped fluoride glass is derived. The formula contains the parameters of the interaction between the ions and the up-conversion rate of the pump-light. It is discussed that the Tb^{3+} ions and the up-conversion pump-light have an influence on the laser performance of Tm^{3+} ions around 1.47μm wavelength. We draw the following two conclusions. (1) The laser threshold descends obviously due to the doping of Tb^{3+} ions, but the descending gradually flattens out with the increase of the content of Tb^{3+} ions. Its suitable content is (1－2)×10^{20}cm^{-3}. (2) When pump-lights both from the up-conversion and from the ground state excite simultaneously the single-doped Tm^{3+} ions, the threshold energy can reduce and the output energy can increase. In this paper, the energy conversion efficiency from the up-conversion pump-light to the output energy of laser is estimated.

关键词: Tb^{3+} and Tm^{3+} ions, threshold energy of laser, energy conversion efficiency, dual-wavelength pumps called the up-conversion and ground state pump

Abstract: A formula for the threshold energy of a four-level-system laser in Tm$^{3+}$ doped fluoride glass is derived. The formula contains the parameters of the interaction between the ions and the up-conversion rate of the pump-light. It is discussed that the Tb$^{3+}$ ions and the up-conversion pump-light have an influence on the laser performance of Tm$^{3+}$ ions around 1.47μm wavelength. We draw the following two conclusions. (1) The laser threshold descends obviously due to the doping of Tb$^{3+}$ ions, but the descending gradually flattens out with the increase of the content of Tb$^{3+}$ ions. Its suitable content is (1－2)×10$^{20}$cm$^{-3}$. (2) When pump-lights both from the up-conversion and from the ground state excite simultaneously the single-doped Tm$^{3+}$ ions, the threshold energy can reduce and the output energy can increase. In this paper, the energy conversion efficiency from the up-conversion pump-light to the output energy of laser is estimated.

Key words: Tb$^{3+}$ and Tm$^{3+}$ ions, threshold energy of laser, energy conversion efficiency, dual-wavelength pumps called the up-conversion and ground state pump

中图分类号:  (Beam characteristics: profile, intensity, and power; spatial pattern formation)

  • 42.60.Jf
42.55.Rz (Doped-insulator lasers and other solid state lasers) 42.70.Ce (Glasses, quartz)