Results 271 to 280 of about 31,377 (306)
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SPIE Proceedings, 2007
In this paper we describe the design and performance of diode-pumped organic lasers based on the poly(paraphenylene-vinylene) derivative MEH-PPV. To achieve the very low oscillation thresholds required for direct diode pumping, we use a novel surface-emitting distributed Bragg reflector cavity.
G. A. Turnbull +3 more
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In this paper we describe the design and performance of diode-pumped organic lasers based on the poly(paraphenylene-vinylene) derivative MEH-PPV. To achieve the very low oscillation thresholds required for direct diode pumping, we use a novel surface-emitting distributed Bragg reflector cavity.
G. A. Turnbull +3 more
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Advanced Solid State Lasers, 1992
A pulsed Nd:LMA laser has been demonstrated using laser diode array pumping. This material is attractive since high Nd concentrations can be achieved while maintaining a reasonable upper laser level lifetime. Experimental results for a-axis pumping of this uniaxial material show potential for high efficiency.
Newton Sims +3 more
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A pulsed Nd:LMA laser has been demonstrated using laser diode array pumping. This material is attractive since high Nd concentrations can be achieved while maintaining a reasonable upper laser level lifetime. Experimental results for a-axis pumping of this uniaxial material show potential for high efficiency.
Newton Sims +3 more
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Diode-pumped Q-switched Yb:YAG laser
Optics Letters, 1993A cw-pumped, repetitively Q-switched, InGaAs-diode-pumped Yb:YAG laser has been demonstrated at room temperature. An output energy of as much as 72 microJ/pulse at 1.03 microm with a pulse length as short as 11 ns (FWHM) was attained. No optical damage was observed despite the high saturation fluence (~10 J/cm(2)) of the Yb:YAG laser and the short ...
T Y, Fan, S, Klunk, G, Henein
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Diode-pumped continuous-wave Nd:glass laser
Optics Letters, 1986We report on diode-laser pumping of monolithic Nd:glass laser oscillators. End pumping with a single-stripe diode laser, a threshold of 2.2 mW, and a slope efficiency of 42% were observed on a 2-mm-long oscillator with a mode radius of 35 microm. The oscillator generated 2.5 mW of single-ended output power in many (>20) axial modes.
W J, Kozlovsky, T Y, Fan, R L, Byer
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Diode-pumped grazing incidence slab lasers
IEEE Journal of Selected Topics in Quantum Electronics, 1997Diode-pumped grazing incidence slab (GISL) lasers, and materials which may be used with this configuration, are discussed. Of the materials investigated so far, Nd:YVO/sub 4/ has been shown to yield high efficiency and high small-signal gain, and a compact, 1-kHz repetition rate laser, using a Nd:YVO/sub 4/ slab has generated 3-ns duration, millijoule ...
Alcock, A., Bernard, J. E.
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Annual Meeting Optical Society of America, 1989
Interest in diode laser pumped solid state lasers has increased dramatically in the past few years due to their advantages over lamp pumped devices and improvements in diode lasers. This has led not only to better performance for 1.06- and 1.32-µm Nd doped lasers, but also to demonstration of a number of novel diode pumped devices.
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Interest in diode laser pumped solid state lasers has increased dramatically in the past few years due to their advantages over lamp pumped devices and improvements in diode lasers. This has led not only to better performance for 1.06- and 1.32-µm Nd doped lasers, but also to demonstration of a number of novel diode pumped devices.
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Diode-Pumped Organic Semiconductor Microcone Laser
IEEE Photonics Technology Letters, 2011We report laser action from conical polymeric microcavities. A thin film of the organic semiconductor tris(8-hydroxyquinoline) aluminum (Alq3) doped with the laser dye 4-dicyanmethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran (DCM) on top of the microcones enables low-threshold lasing when pumped with a conventional blu-ray laser diode.
Klinkhammer, Sönke +7 more
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Diode-pumped, continuous-wave Tm:YAIO_3 laser
Applied Optics, 2006A continuous-wave, diode-pumped, room-temperature Tm:YAlO3 laser was built, characterized, and compared with a theoretical model. Spectroscopic parameters of the laser crystal, such as the pump band ((3)H4 manifold) lifetime, the upper laser level ((3)F4 manifold) lifetime, and the absorption coefficient were measured.
Thangavel, Thevar, Norman P, Barnes
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Diode-pumped cw bulk Er:Yb:glass laser
Optics Letters, 1991ontinuous-wave laser operation of bulk Er:Yb:phosphate glass pumped at 980 nm by an InGaAs index-guided diode laser has been achieved for the first time to our knowledge, with 2 mW of output power obtained at 1.54 microm. To optimize pumping conditions and to investigate the effects of pump wavelength, the Er(3+):Yb(3+) glass disk has also been pumped ...
LAPORTA, PAOLO +3 more
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Diode Pumped Erbium Cascade Fiber Lasers
IEEE Journal of Quantum Electronics, 2011Cascading the 4I11/2 -> 4I13/2 transition at 2.8 μm and 4I13/2 -> 4I15/2 transition at 1.6 μm offers a solution to the thermal management of high power Er3+-doped fluoride fiber lasers. We demonstrate an output power of 8.2 W at 2.8 μm from an Er3+-doped fluorozirconate fiber laser with 56 W of launched pump power at 975 nm by cascade laser ...
Jackson, Stuart D. +2 more
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