Diode-pumped passively Q-switched mode-locked c-cut Nd:GdVO/sub 4//KTP Green laser with a GaAs wafer

Author

Yang, Kejian ; Zhao, Shengzhi ; Guiqiu Li ; Ming Li ; Li, Dechun ; Wang, Jing ; An, Jing

Author_Institution

Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan

Volume

42

Issue

7

fYear

2006

fDate

7/1/2006 12:00:00 AM

Firstpage

683

Lastpage

689

Abstract

A diode-pumped passively Q-switched mode-locked (QML) intracavity frequency-doubled c-cut Nd:GdVO₄/KTP green laser with a GaAs saturable absorber is presented. Nearly 100% modulation depth for the mode-locked green pulses has been achieved. By using the hyperbolic secant function methods and considering the influences of continuous pump rate and the stimulated radiation lifetime of the active medium, a modified rate equation model for Q-switched and mode-locked lasers was proposed. With this modified model, the theoretical calculations are in good agreement with the experimental results, and the width of the mode-locked green pulse was estimated to be about 300 ps

Keywords

III-V semiconductors; Q-switching; gadolinium compounds; gallium arsenide; laser cavity resonators; laser mode locking; neodymium; optical harmonic generation; optical modulation; optical pumping; optical saturable absorption; potassium compounds; radiative lifetimes; solid lasers; stimulated emission; 300 ps; GaAs; GaAs saturable absorber; GaAs wafer; GdVO₄:Nd; KTP; KTiOPO4; Nd:GdVO₄/KTP laser; diode-pumped laser; green laser; hyperbolic secant function methods; intracavity frequency-doubling; mode-locked green pulses; mode-locked laser; modulation depth; passive Q-switching; rate equation model; stimulated radiation lifetime; Diodes; Equations; Frequency; Gallium arsenide; Laser excitation; Laser mode locking; Laser theory; Pulse modulation; Pump lasers; Space vector pulse width modulation; fluctuation mechanism; mode-locking; passively Q-switched;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2006.876358

Filename

1643360