Results 271 to 280 of about 5,980,056 (304)

Single longitudinal-mode optical phonon scattering in Ga0.47In0.53As

Applied Physics Letters, 1983
We show that only one of the four Raman active modes in Ga0.47In0.53As shows the required symmetry behavior for longitudinal optical (LO) phonons. An additional mode previously supposed to be LO shows mixed-mode behavior and may be disorder activated.
T. P. Pearsall, R. Carles, J. C. Portal
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High-efficiency single-longitudinal-mode laser

OSA Annual Meeting, 1993
This is a new type laser composed by two resonators. It conquers the contradiction between the efficiency and the quality of single longitudinal mode (SLM), and there is no strict matching requirement for resonator and modes of injection locking.
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Single longitudinal mode operation of the electron-beam-pumped semiconductor laser

IEEE Journal of Quantum Electronics, 1986
The influence of the external and internal resonator parameters on the laser emission spectral and spatial characteristics has been investigated. Single longitudinal mode operation of the electron-beam-pumped visible semiconductor laser with an external resonator has been observed.
J. Khurgin, W. Seemungal, S. Colak, A. Heeling   +3 more
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Power dropout statistics of nearly single-longitudinal-mode semiconductor lasers

Conference on Lasers and Electro-Optics, 1984
Mode partition noise is unavoidable with semiconductor lasers, even when the laser is oscillating in a nearly single longitudinal mode.1-4 This noise shows up in the form of power dropouts in the main mode, and power increases in the side modes. Such power dropouts were first observed by Linke et al.5 Main-mode power dropouts can affect the performance
G. Abbas, T. Yee
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Grating-tuned, single-longitudinal-mode, diode-pumped Nd:YVO_4 laser

Optics Letters, 1993
Single-longitudinal-mode output as great as 1 mJ has been obtained from a grating-tuned Nd:YVO4 laser pumped by a quasi-cw laser-diode array. A simple cavity design containing a diffraction grating at a high angle of incidence has permitted the output to be tuned over a wavelength range of greater than 1 nm.
J E, Bernard, V D, Lokhnygin, A J, Alcock   +2 more
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Tunable single-longitudinal-mode diode laser pumped Tm:Ho:YAG laser

Applied Optics, 1990
Continuous wave single-longitudinal-mode power of 58 mW and frequency tuning of ~1 THz has been obtained near 2.1 μm using a diode laser pumped thermoelectrically cooled Tm:Ho:YAG laser.
S W, Henderson, C P, Hale
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III Single-Longitudinal-Mode Semiconductor Lasers

1988
Publisher Summary This chapter discusses the single-longitudinal-mode (SLM) semiconductor lasers. The use of single-mode fibers has eliminated the problem of modal noise. The chapter reviews the recent progress in the field of SLM semiconductor lasers. The physics of semiconductor lasers is discussed and the material system and the structure commonly
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Single-longitudinal-mode Er:GGG microchip laser operating at 27  μm

Optics Letters, 2015
We reported on a diode-end-pumped single-longitudinal-mode microchip laser using a 600-μm-thick Er:GGG crystal at ∼2.7  μm, generating a maximum output power of 50.8 mW and the maximum pulsed energy of 0.306 mJ, with repetition rates of pumping light of 300, 200, and 100 Hz, respectively. The maximum slope efficiency of the laser was 20.1%.
Zhenyu, You, Yan, Wang, Jinlong, Xu, Zhaojie, Zhu, Jianfu, Li, Hongyan, Wang, Chaoyang, Tu   +6 more
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Versatile high-power single-longitudinal-mode pulsed dye laser

Applied Optics, 1981
A versatile high-spectral-energy density dye laser suitable for lidar applications and high-resolution spectroscopy is reported. The dye laser includes an oscillator and preamplifier and two amplifier stages. With transverse pumping by the second harmonic of a Nd:YAG laser, an efficiency of 55% was achieved at 589 nm, providing 165 mJ in a single ...
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Single-longitudinal-mode scan of a pulsed double-grating Ti:sapphire oscillator

Applied Optics, 2007
The method of the single-longitudinal-mode (SLM) scan of a pulsed double-grating Ti:sapphire laser oscillator with the grazing incidence cavity configuration was proposed based on the analysis of the optical path length. The SLM scan was experimentally confirmed for this cavity configuration, where the second grating was rotated around an arbitrary ...
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