Results 261 to 270 of about 17,264 (307)

Cryogenically cooled Ti:sapphire amplifiers

SPIE Proceedings, 2006
Power scaling in laser systems is fundamentally constrained by detrimental effects of absorbed heat in the lasing medium. Cryogenic cooling is a well known technique for improving thermal performance in solid state laser materials. In particular the dramatic improvement in the thermal properties of Ti:sapphire at cryogenic temperatures has enabled a ...
Jean-Marc Heritier, Steve Fournier, G. J. Germann, B. Resan, R. Viselga, A. Fry   +5 more
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A cryogenic circuit cools from afar

Physics Today, 2021
A cloud of ultracold ions can lower the temperature of a trapped proton 9 cm away.
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Optimization of the thermal design of a cryogenically cooled computer

IEEE Transactions on Components, Hybrids, and Manufacturing Technology, 1992
The performance and costs of three types of cryogenic cooling systems are analyzed; a once-through system in which liquid nitrogen is allowed to boil on the CPU boards and is then vented to the surroundings; a saturated pool boiling refrigerated system in which gaseous nitrogen generated from boiling on the CPU boards in condensed in the vapor space ...
J. Anderson, R.J. Krane, J.R. Parsons, A. Bar-Cohen   +3 more
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Cryogenic Cooling of the F.I.R.ST. Payload

SAE Technical Paper Series, 1994
<div class="htmlview paragraph">The European Space Agency Far Infra-Red and Sub-millimeter Space Telescope (FIRST) is one of the four designated “Cornerstone” missions in the long term science plan “Horizon 2000”. FIRST is intended to open up the last major part of the electromagnetic spectrum, the sub-millimeter and far infra-red range, which is
S. R. Scull, M. Batchelor
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165-W cryogenically cooled Yb:YAG laser

Optics Letters, 2004
Thermo-optic distortions often limit the beam quality and power scaling of high-average-power lasers. Cryogenically cooled Yb:YAG is used to efficiently generate 165 W of near-diffraction-limited beam from a power oscillator with negligible thermo-optic effects.
Daniel J, Ripin, Juan R, Ochoa, R L, Aggarwal, Tso Yee, Fan   +3 more
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Cryogenic-cooled Tm:SBN tunable laser

Photonics, Devices, and Systems VII, 2017
In this work the temperature dependence of spectroscopic and laser properties of new ac- tive medium Tm:SBN (Strontium-Barium Niobate, SrxBa1−xNb2O6, x = 0.61). The tested sample of Tm:SBN (2 wt. % of Tm2O3) appropriate for generation of laser radiation at 1.88 μm had plan-parallel polished faces without anti-reflection (thickness 6.65 mm).
Liudmila I. Ivleva, Pavel A. Lykov, Alexander G. Papashvili, Maxim E. Doroshenko, Helena Jelínková, Michal Němec, Jan Šulc, Richard Švejkar   +7 more
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CRYOGENIC COOLING DEVICE

2001
The invention relates to a cryogenic cooling device comprising a first pulse tube cooler. Said pulse tube cooler is equipped with a first pulse tube (20), which has a first cold head (24) for providing a first cooling area with a first temperature (TE), and is equipped with a first regenerator (40), which has a first cold end section (46) that is ...
CSP CRYOGENIC SPECTROMETERS GM, HOEHNE JENS   +1 more
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Survey of Cryogenic Cooling Techniques

1972
Abstract : A survey was made to determine the state of the art of various methods of cooling to cryogenic temperatures for potential adaptation to spaceborne systems. The study included evaluation of mechanical closed-cycle refrigerators, open-cycle expendable systems, passive radiation concepts which utilize the low temperature of the deep space ...
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Mechanism of Cutting Elastomers with Cryogenic Cooling

CIRP Annals, 2016
Abstract Machining of elastomers offers more flexibility of product shape in comparison to the common compression moulding, especially for small batch series. In this context the entropy-elastic behaviour of the material with low Young's modulus is the main barrier for high-quality manufacturing.
Matthias Putz, Martin Dix, Mike Neubert, Torsten Schmidt   +3 more
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Cooling to Cryogenic Temperatures by Sublimation

1964
A variety of components now available or under development must be cooled to cryogenic temperatures for efficient operation. Infrared detectors and other semiconductors represent one group of such devices which dissipate less than 2 w of heat when in operation, and many produce less than 0.1 w of heat.
A. I. Weinstein, A. S. Friedman, U. E. Gross   +2 more
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