Title :
Fourth harmonic generation in a resonant ring cavity
Author :
Knittel, Joachim ; Kung, A.H.
Author_Institution :
Inst. of Atomic & Molecular Sci., Acad. Sinica, Taipei, Taiwan
fDate :
11/1/1997 12:00:00 AM
Abstract :
We have analyzed the generation of the fourth harmonic of pulsed laser radiation in a ring cavity that resonates at the second harmonic wavelength. With the help of numerical simulation, the dependence of the conversion efficiency on input laser power as well as cavity loss and nonlinear crystal coefficient is obtained. The model predicts over 50% conversion from the fundamental to the fourth harmonic with less than 1.2 MW of input power (10 mJ in 8.5 ns). The results compare well with experimental measurements where 39.5% infrared-ultraviolet conversion was obtained using low power from a Q-switched Nd:YAG laser
Keywords :
Q-switching; laser cavity resonators; laser theory; neodymium; optical harmonic generation; ring lasers; solid lasers; 1.2 MW; 10 mJ; 39.5 percent; 50 percent; 8.5 ms; Q-switched Nd:YAG laser; YAG:Nd; YAl5O12:Nd; cavity loss; conversion efficiency; fourth harmonic; fourth harmonic generation; infrared-ultraviolet conversion; input laser power; input power; nonlinear crystal coefficient; numerical simulation; pulsed laser radiation; resonant ring cavity; second harmonic wavelength; Frequency conversion; Harmonic analysis; Laser modes; Numerical simulation; Optical harmonic generation; Optical pulse generation; Power lasers; Predictive models; Resonance; Ring lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
