论文信息 - Pump-induced bleaching of the saturable absorber in short-pulse Nd:YAG/Cr/sup 4+/:YAG passively Q-switched microchip lasers

Pump-induced bleaching of the saturable absorber in short-pulse Nd:YAG/Cr/sup 4+/:YAG passively Q-switched microchip lasers

Bleaching of the saturable absorber by pump light increases the length of the pulse generated in a passively Q-switched Nd:YAG/Cr/sup 4+/:YAG microchip laser and decreases the pulse energy. This effect is greatest when transmitted pump light is nearly focused in the Cr/sup 4+/:YAG and when pumping is sufficiently intense to bleach the absorption of the Nd:YAG. Both effects are important in short-pulse microchip lasers. The maximum repetition rate of a passively Q-switched Nd:YAG/Cr/sup 4+/:YAG microchip laser is correlated with the pulsewidth. In general, it decreases as the pulsewidth gets shorter.

J. Zayhowski | J. J. Zayhowski | A. L. Wilson | A. Wilson

[1] A. Szabo,et al. Theory of Laser Giant Pulsing by a Saturable Absorber , 1965 .

[2] J. Zayhowski,et al. Optimization of Q-switched lasers , 1991 .

[3] J. Zayhowski,et al. Topical Papers on Microchip Lasers and Applications. Passively Q-Switched Microchip Lasers and Applications. , 1998 .

[4] John J. Zayhowski,et al. Mid- and High-Power Passively Q-Switched Microchip Lasers , 2001 .

[5] Yehoshua Kalisky,et al. Excited-state absorption studies of Cr/sup 4+/ ions in several garnet host crystals , 1998 .

[6] D. G. Kocher,et al. Three-dimensional imaging laser radar with a photon-counting avalanche photodiode array and microchip laser. , 2002, Applied optics.

[7] J. Zayhowski,et al. Diode-pumped passively Q-switched picosecond microchip lasers. , 1994, Optics letters.

[8] J. J. Zayhowski. Thermal Guiding in Microchip Lasers , 1991 .

[9] Michael Bass,et al. A generalized model for passively Q-switched lasers including excited state absorption in the saturable absorber , 1997 .