Zobrazeno 1 - 10
of 55
pro vyhledávání: '"John J. Zayhowski"'
Autor:
John J. Zayhowski, A.L. Wilson
Publikováno v:
IEEE Journal of Quantum Electronics. 39:1588-1593
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 nearl
Autor:
John J. Zayhowski, A.L. Wilson
Publikováno v:
IEEE Journal of Quantum Electronics. 38:1449-1454
Summary form only given. A miniature Ti:sapphire laser system, producing 14-mJ, 780-nm pulses of 1 ns duration at 10-kHz repetition rate, was constructed and characterized. The system comprises a passively Q-switched microchip laser, an optical ampli
Autor:
John J. Zayhowski
Publikováno v:
Journal of Alloys and Compounds. :393-400
Passively Q-switched Nd:YAG microchip lasers are robust, compact, economical, all-solid-state sources of coherent, subnanosecond, multikilowatt pulses at high repetition rates. When pumped with the cw output of commercially available infrared diode l
Autor:
John J. Zayhowski
Publikováno v:
Optical Materials. 11:255-267
Publikováno v:
Applied optics. 34(3)
When pumped with a 1-W laser diode, a Tm:YVO(4) microchip laser produced 150 mW of 1.92-µm output in a near-diffraction-limited beam at room temperature. Using a Ti:Al(2)O(3) laser to pump the same device, we showed that reducing the temperature of
Autor:
George W. Turner, Joseph P. Donnelly, Robert J. Bailey, John J. Zayhowski, Michael J. Manfra, Mohamed A. Diagne, Michael K. Connors, E.K. Duerr, Michael J. Grzesik
Publikováno v:
SPIE Proceedings.
At MIT Lincoln Laboratory, avalanche photodiodes (APDs) have been developed for both 2-μm and 3.4-μm detection using the antimonide material system. These bulk, lattice-matched detectors operate in Geiger mode at temperatures up to 160 K. The 2-μm
Autor:
J.A. Keszenheimer, John J. Zayhowski
Publikováno v:
IEEE Journal of Quantum Electronics. 28:1118-1122
Pump-power modulation can be an effective means to change the output frequency of microchip lasers. The frequency response of the microchip laser to pump-power modulation is derived in closed form. The theoretical result is in excellent agreement wit
Autor:
C. Dill, John J. Zayhowski
Publikováno v:
Optics letters. 20(7)
Nd:YVO(4) microchip lasers have been electro-optically Q switched to produce 12-microJ pulses of 115-ps duration at repetition rates of up to 1 kHz. At a repetition rate of 2.25 MHz, 0.16-microJ pulses with an 8.8-ns duration were obtained.
Autor:
John J. Zayhowski, C. Dill
Publikováno v:
Optics letters. 19(18)
Passively Q-switched 1.064-microm microchip lasers have been constructed from thin pieces of Nd(3+):YAG bonded to thin pieces of Cr(4+):YAG. When pumped with the unfocused 1.2-W output of a fiber-coupled diode, these devices produced 11-microJ pulses