Journal ArticleDOI
Highly efficient neodymium:yttrium aluminum garnet laser end pumped by a semiconductor laser array
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TLDR
In this paper, a tightly focused semiconductor laser end pump configuration is used to achieve high pumping intensities, which in turn causes the photon to photon conversion efficiency to approach the quantum efficiency.Abstract:
In recent experiments, 80-mW CW power in a single mode has been achieved from a neodymium:yttrium aluminum garnet (Nd:YAG) laser with only 1 W of electrical power input to a single semiconductor laser array pump. This corresponds to an overall efficiency of 8 percent, the highest reported CW efficiency for a Nd:YAG laser. A tightly focused semiconductor laser end pump configuration is used to achieve high pumping intensities (on the order of 1 kW/sq cm), which in turn causes the photon to photon conversion efficiency to approach the quantum efficiency (76 percent for Nd:YAG at 1.06 microns pumped at 0.810 micron). This is achieved despite the dual-lobed nature of the pump. Through the use of simple beam-combining schemes (e.g., polarization coupling and multireflection point pumping), output powers over 1 W and overall electrical to optical efficiencies as high as 10 percent are expected.read more
Citations
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Journal ArticleDOI
Diode laser-pumped solid-state lasers
T. Y. Fan,Robert L. Byer +1 more
TL;DR: Progress in diode lasers and diode laser arrays promises all solid-state lasers in which the flash lamp is replaced by diode Laser for average power levels in excess of tens of watts and at a price that is competitive with flash lamp-pumped laser systems.
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Ytterbium solid-state lasers. The first decade
TL;DR: In this article, the spectroscopic and laser kinetic properties of the trivalent ytterbium ion in various solid-state media are reviewed and compared with four-and quasi-three-level laser architectures, and various architectures suitable for use in high-brightness high-power Yb:YAG lasers are examined.
Journal Article
Ytterbium solid-state lasers: The first decade
TL;DR: In this paper, the spectroscopic and laser kinetic properties of the trivalent ytterbium ion in various solid-state media are reviewed and compared with four-and quasi-three-level laser architectures, and various architectures suitable for use in high-brightness high-power Yb:YAG lasers are examined.
Journal ArticleDOI
Modeling of longitudinally pumped solid-state lasers exhibiting reabsorption losses
TL;DR: In this paper, Liu et al. performed a comprehensive analysis of the behavior of longitudinally pumped solid-state laser, including reabsorption loss and for arbitrary sizes of the pump-and laser-beam waists.
Journal ArticleDOI
Modeling and CW operation of a quasi-three-level 946 nm Nd: YAG laser
Tso Fan,Robert L. Byer +1 more
TL;DR: In this article, a model for an end-pumped quasi-three-level laser with population in the lower laser level at equilibrium was developed for transitions to the manifolds4I 9/2 in Nd3+,4I 15/2 and 3H 6 in Tm3+.
References
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Journal ArticleDOI
Monolithic, unidirectional single-mode Nd:YAG ring laser
Thomas J. Kane,Robert L. Byer +1 more
TL;DR: A nonplanar ring oscillator with the resonator contained entirely within a Nd:YAG crystal obtained unidirectional oscillation when placed in a magnetic field with pump-limited, single-axial-mode output of 163 mW.
Journal ArticleDOI
Efficient, frequency-stable laser-diode-pumped Nd:YAG laser
TL;DR: The design and test of a laser-diode-pumped monolithic Nd:YAG oscillator found the frequency jitter was less than 10 kHz over a 0.3-sec period, the best frequency stability reported for a Nd?:YAG laser to date.
Journal ArticleDOI
GaAs diode‐pumped Nd : YAG laser
TL;DR: In this article, the authors used a single chip heterostructure GaAs laser diode as a pump source, and temperature tuning its output wavelength to achieve a spectral overlap with the 8680−A absorption line in Nd : YAG, which was observed in a 1.5mm-diam×25.4mm-long laser rod.
Journal ArticleDOI
Miniature diode-pumped Nd : YAIG lasers
R. B. Chesler,D. A. Draegert +1 more
TL;DR: In this article, a 5 × 0.45mm laser rod is end pumped by a single incoherent GaAs1−xPx light emitting diode, and the measured threshold optical power incident on the end of the laser rod was 19 mW at 24°C.
Journal ArticleDOI
Laser emission cross section of Nd:YAG at 1064 nm
TL;DR: In this paper, the stimulated emission cross section of Nd:YAG (yttrium aluminum garnet) (4F3/2→4I11/2) was compared to the known cross-section of ED:ED•2 glass at 1060 nm.