Journal of Shanghai Jiao Tong University (Science) ›› 2019, Vol. 24 ›› Issue (5): 579-583.doi: 10.1007/s12204-019-2116-0

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Lasing Frequency Up-Conversion by Using Thermal Population

Lasing Frequency Up-Conversion by Using Thermal Population

NKONDE Sampa, JIANG Chun (姜淳)   

  1. (State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)
  2. (State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)
  • Online:2019-10-08 Published:2019-09-27
  • Contact: NKONDE Sampa E-mail:nkondes@sjtu.edu.cn

Abstract: We theoretically demonstrate a model which can be used to analyze frequency up-conversion of a laser wavelength by using thermal population. The proposed model uses a rate equation model of ytterbium-doped fiber with thermal population effect. The rate and power propagation equations are set up and numerically analyzed to elucidate the dependence of frequency up-conversion efficiency and thermal-optical conversion efficiency on ambient thermal power. The analytical techniques and numerical results show that using pump laser at 1 000 nm, the wavelength can be converted into 900 nm with an up-conversion quantum efficiency of about 99.97% and a cooling efficiency of about 11.1%. This theoretical model is a promising candidate for vast applications in energyefficient laser and energy-utilizing field.

Key words: fiber laser| frequency up-conversion| thermal population| lasing

摘要: We theoretically demonstrate a model which can be used to analyze frequency up-conversion of a laser wavelength by using thermal population. The proposed model uses a rate equation model of ytterbium-doped fiber with thermal population effect. The rate and power propagation equations are set up and numerically analyzed to elucidate the dependence of frequency up-conversion efficiency and thermal-optical conversion efficiency on ambient thermal power. The analytical techniques and numerical results show that using pump laser at 1 000 nm, the wavelength can be converted into 900 nm with an up-conversion quantum efficiency of about 99.97% and a cooling efficiency of about 11.1%. This theoretical model is a promising candidate for vast applications in energyefficient laser and energy-utilizing field.

关键词: fiber laser| frequency up-conversion| thermal population| lasing

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