The comparative simulation of the Q-switched Nd:YAG and Yb:YAG microchip lasers

Author

Buryy, O.A. ; Ubiszkii, S.B. ; Melnyk, S.S. ; Matkovskii, A.O.

Author_Institution

Inst. of Telecommun. Radioelectron. Eng., Lviv Polytech. Nat. Univ., Ukraine

fYear

2003

fDate

19-20 Sept. 2003

Firstpage

90

Lastpage

92

Abstract

In this paper a comparison between microchip lasers based on Nd:YAG and Yb:YAG-generating media by means of the optimization problem solving is done. Such an approach allows to estimate theoretically the highest possible values of the laser irradiation parameters, particularly, the energy E in the laser pulse. This investigation is stipulated by such properties of the Yb³⁺doped medium, as smaller, ir comparison with traditional Nd:YAG, Stox losses (24% for Nd:YAG and 9% for Yb:YAG laser), a low thermal load, a wider absorption band in the pumping region, a higher lifetime of the upper laser level, an absence of the concentration extinguishing and, consequently, the possibility of the ytterbium concentration increase.

Keywords

Q-switching; laser beams; microchip lasers; neodymium; optical pumping; optimisation; ytterbium; Nd:YAG microchip laser; Q-switching; Stox losses; YAG:Nd; YAG:Yb; YAl5O12:Nd; YAl5O12:Yb; Yb:YAG microchip lasers; Yb³⁺-doped medium; absorption band; laser irradiation parameters; laser pulse; optical pumping region; optimization; thermal load; upper laser level lifetime; ytterbium concentration; Electromagnetic wave absorption; Estimation theory; Laser excitation; Laser theory; Microchip lasers; Optical pulses; Problem-solving; Pump lasers; Thermal loading; Ytterbium;

fLanguage

English

Publisher

ieee

Conference_Titel

Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. 5th International Workshop on

Print_ISBN

0-7803-7709-5

Type

conf

DOI

10.1109/LFNM.2003.1246084

Filename

1246084