Results 271 to 280 of about 11,012 (313)
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IEEE Circuits and Devices Magazine, 2003
Passively Q-switched, diode pumped, all solid-state lasers are an elegant, yet simple, means to generate single-frequency laser pulses in the nanosecond and sub-nanosecond regions. The majority of the work on these systems has been in the 1-/spl mu/m region, but recent developments at eye-safe and mid-infrared wavelengths of both diode-pumped lasers ...
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Passively Q-switched, diode pumped, all solid-state lasers are an elegant, yet simple, means to generate single-frequency laser pulses in the nanosecond and sub-nanosecond regions. The majority of the work on these systems has been in the 1-/spl mu/m region, but recent developments at eye-safe and mid-infrared wavelengths of both diode-pumped lasers ...
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A laser with a passive Q switch
Journal of Applied Spectroscopy, 1967A phototropic KS-19 glass switch is considered. It is shown that interference effects cause reflections from the ends of the rod and the faces ot the switch to reduce the pulse energy. The effect is suppressed by bringing the shutter into optical contact with the rod. The advantages are discussed.
B. B. Boiko +3 more
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SPIE Proceedings, 2008
The first demonstration of a pulsed Nd:YCOB laser at 1060 nm is reported, with results for both gain switching and Qswitching presented. Active Q-switching is achieved using the spinning disc technique pulses of 50 ns duration with pulse energies up to 0.6 mJ are obtained.
C. J. Mercer +4 more
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The first demonstration of a pulsed Nd:YCOB laser at 1060 nm is reported, with results for both gain switching and Qswitching presented. Active Q-switching is achieved using the spinning disc technique pulses of 50 ns duration with pulse energies up to 0.6 mJ are obtained.
C. J. Mercer +4 more
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Q-Switch Modulator as a Pulse Shaper in Q-Switched Fiber Lasers
IEEE Photonics Technology Letters, 2012An experimental study of several operation regimes of Q-switch modulator and their impact on the shape of Q-switched fiber laser pulses are discussed. It is shown that various Q-switch regimes including classical Q-switch, simultaneous Q-switch with quasi-mode-locking, or Q-switch with reduced interval between subpulses can be easily obtained using ...
Luis Escalante-Zarate +3 more
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A water passively Q-switched Cr:Yb:Ho:YSGG laser
Conference on Lasers and Electro-Optics-Europe, 1998The potential of many application in laser medicine has inspired extensive studies in recent years related to development of 3 pm solid state lasers, based on Er3+-doped crystals (YAG, YSGG, YLF, YAlO3, CaF2) and Ho-doped crystals. New Cr,Yb,Ho: YSGG crystal is very suitable active medium for solid-state laser, it combines a high lasing efficiency with
A.I. Zagumennvi +6 more
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Dynamics of a Q-Switched Laser
1970The most effective method of generating giant pulses of coherent light — “Q-modulation” (“Q-switching”) of a laser — was proposed by Hellwarth [1]. The first theoretical investigations [1–6] of the energy, maximum power, and the rate of rise and decay of the giant pulse were based on equations balancing the total energy of the radiation field and the ...
V. S. Letokhov, A. F. Suchkov
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Q-switching in fibre lasers [PDF]
, 1993 This chapter is aimed at providing a detailed description of the techniques involved in Q-switching fibre lasers. In view of the potential of these sources, particular emphasis is placed on diode-pumped operation. In addition, the present status of this type of laser is reviewed, current limitations discussed and possible future progress outlined.There
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Q-switched (“Cool”) Lasers in Ophthalmology
International Ophthalmology Clinics, 1976openaire +2 more sources