ISSN:
1432-0649
Keywords:
42.55
;
42.65
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract An undamped undulation superposed on the pulse tail of the passive Q-switching is observed using HCOOH gas as a saturable absorber. The pulse shapes with the undulation are nicely reproduced through the rate-equation analysis in which the laser gain medium is described as a three-level system. Good agreements between the observation and the calculation are also obtained in the dependence of the period and the width of passive Q-switching pulse on laser parameters. The mechanism of the undulation is interpreted as the relaxation oscillation attributed to the relaxation from the lower laser level. The collisional rate constant of HCOOH molecule is also obtained.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00694802
