Modeling of time evolution of power and temperature in single-pulse and multi-pulses diode-pumped alkali vapor lasers | Zendy

Binglin Shen | Zendy; Jinghua Huang | Zendy; Xingqi Xu | Zendy; Chunsheng Xia | Zendy; Bailiang Pan | Zendy

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Modeling of time evolution of power and temperature in single-pulse and multi-pulses diode-pumped alkali vapor lasers

Author(s) -

Binglin Shen,

Jinghua Huang,

Xingqi Xu,

Chunsheng Xia,

Bailiang Pan

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.013396

Subject(s) - laser , materials science , diode , duty cycle , optics , pulse (music) , ultrafast laser spectroscopy , tunable diode laser absorption spectroscopy , spectroscopy , rate equation , optoelectronics , power (physics) , physics , detector , thermodynamics , quantum mechanics , kinetics

A physical model combining rate, power propagation, and transient heat conduction equations for diode-pumped alkali vapor lasers (DPAL) is applied to a pulsed Rb-CH 4 DPAL, which agrees well with the time evolution of laser power and temperature measured by K absorption spectroscopy. The output feature and temperature rise of a multi-pulse DPAL are also calculated in the time domain, showing that if we energize the pump light when the temperature rise decays to 1/2, rather than 1/e of its maximum, we can increase the duty cycle and obtain more output energy. The repetition rate of >100Hz is high enough to achieve QCW (quasi-continuous-wave) laser pulses.

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