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.
NKONDE Sampa
,
JIANG Chun (姜淳)
. Lasing Frequency Up-Conversion by Using Thermal Population[J]. Journal of Shanghai Jiaotong University(Science), 2019
, 24(5)
: 579
-583
.
DOI: 10.1007/s12204-019-2116-0
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