M. Deneva et al., IMPROVED PASSIVE SELF-INJECTION LOCKING METHOD FOR SPECTRAL CONTROL OF DYE AND TI-AL2O3 LASERS USING 2-STEP PULSE PUMPING, Optics communications, 139(4-6), 1997, pp. 287-298
An improved passive self-injection locking (PSIL) method for the spect
ral control of dye and Ti:Al2O3 lasers using two-step pulse laser pump
ing is reported (theoretically, experimentally). By this pump techniqu
e, the typical unwanted free lasing which occurs in the non-selective
cavity at high pump level is reduced by a few orders of magnitude comp
ared with the standard PSIL application. This combined approach ensure
s high purity tunable emission at laser efficiency nearly equal to the
maximum obtained in an optimized non-selective cavity and avoids opti
cal damage problems. This makes the PSIL method competitive or prefera
ble to other frequently used spectrally selective methods. Analysis an
d experimental check for two-wavelength lasers are included.