Solid State Optical Refrigeration To Sub 100 Kelvin Regime PDF Download

Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Solid State Optical Refrigeration To Sub 100 Kelvin Regime PDF full book. Access full book title Solid State Optical Refrigeration To Sub 100 Kelvin Regime.

Solid-state Optical Refrigeration to Sub-100 Kelvin Regime

Solid-state Optical Refrigeration to Sub-100 Kelvin Regime
Author:
Publisher:
Total Pages:
Release: 2016
Genre:
ISBN:

Download Solid-state Optical Refrigeration to Sub-100 Kelvin Regime Book in PDF, ePub and Kindle

We report that since the first demonstration of net cooling twenty years ago, optical refrigeration of solids has progressed to outperform all other solid-state cooling processes. It has become the first and only solid-state refrigerator capable of reaching cryogenic temperatures, and now the first solid-state cooling below 100 K. Such substantial progress required a multi-disciplinary approach of pump laser absorption enhancement, material characterization and purification, and thermal management. Here we present the culmination of two decades of progress, the record cooling to ≈91K from room temperature.


Oxide Electronics

Oxide Electronics
Author: Asim K. Ray
Publisher: John Wiley & Sons
Total Pages: 624
Release: 2021-04-22
Genre: Technology & Engineering
ISBN: 1119529506

Download Oxide Electronics Book in PDF, ePub and Kindle

Oxide Electronics Multiple disciplines converge in this insightful exploration of complex metal oxides and their functions and properties Oxide Electronics delivers a broad and comprehensive exploration of complex metal oxides designed to meet the multidisciplinary needs of electrical and electronic engineers, physicists, and material scientists. The distinguished author eschews complex mathematics whenever possible and focuses on the physical and functional properties of metal oxides in each chapter. Each of the sixteen chapters featured within the book begins with an abstract and an introduction to the topic, clear explanations are presented with graphical illustrations and relevant equations throughout the book. Numerous supporting references are included, and each chapter is self-contained, making them perfect for use both as a reference and as study material. Readers will learn how and why the field of oxide electronics is a key area of research and exploitation in materials science, electrical engineering, and semiconductor physics. The book encompasses every application area where the functional and electronic properties of various genres of oxides are exploited. Readers will also learn from topics like: Thorough discussions of High-k gate oxide for silicon heterostructure MOSFET devices and semiconductor-dielectric interfaces An exploration of printable high-mobility transparent amorphous oxide semiconductors Treatments of graphene oxide electronics, magnetic oxides, ferroelectric oxides, and materials for spin electronics Examinations of the calcium aluminate binary compound, perovoksites for photovoltaics, and oxide 2Degs Analyses of various applications for oxide electronics, including data storage, microprocessors, biomedical devices, LCDs, photovoltaic cells, TFTs, and sensors Suitable for researchers in semiconductor technology or working in materials science, electrical engineering, and physics, Oxide Electronics will also earn a place in the libraries of private industry researchers like device engineers working on electronic applications of oxide electronics. Engineers working on photovoltaics, sensors, or consumer electronics will also benefit from this book.


Optical Refrigeration

Optical Refrigeration
Author: Richard I. Epstein
Publisher: John Wiley & Sons
Total Pages: 258
Release: 2010-12-13
Genre: Science
ISBN: 3527628053

Download Optical Refrigeration Book in PDF, ePub and Kindle

Edited by the two top experts in the field with a panel of International contributors, this is a comprehensive up-to-date review of research and applications. Starting with the basic physical principles of laser cooling of solids, the monograph goes on to discuss the current theoretical issues being resolved and the increasing demands of growth and evaluation of high purity materials suitable for optical refrigeration, while also examining the design and applications of practical cryocoolers. An advanced text for scientists, researchers, engineers, and students (masters, PHDs and Postdoc) in laser and optical material science, and cryogenics.


Optical Refrigeration in the Solid State

Optical Refrigeration in the Solid State
Author: Office of naval research arlington va
Publisher:
Total Pages: 4
Release: 1998
Genre:
ISBN:

Download Optical Refrigeration in the Solid State Book in PDF, ePub and Kindle

Operating at reduced temperature dramatically enhances the performance of many devices. Semiconductor laser diodes are more efficient and semiconductor photodetectors are more sensitive when cooled. Some devices, particularly those that depend on the phenomenon of superconductivity, only operate at cryogenic temperatures (less than approximately 150 K). Hence, the need for reliable refrigeration of electronic devices is well established. However, existing refrigeration technology is far from ideal. Vibrations produced by Sterling cycle refrigerators are detrimental to device performance. Magnetic salt cooling is not compatible with many applications. Cryogenic baths require a continuous supply of cryogenic liquids, which are difficult to make and transport. And the minimum temperature achievable via Peltier cooling is only about 220 K. Clearly, there is a need for a quiet, robust refrigerator that can achieve and maintain cryogenic temperatures.


Measurement of Solid-state Optical Refrigeration by Two-band Differential Luminescence Thermometry

Measurement of Solid-state Optical Refrigeration by Two-band Differential Luminescence Thermometry
Author:
Publisher:
Total Pages:
Release: 2009
Genre:
ISBN:

Download Measurement of Solid-state Optical Refrigeration by Two-band Differential Luminescence Thermometry Book in PDF, ePub and Kindle

We present a non-contact spectroscopic teclmique for the measurement of laser-induced temperature changes in solids. Two-band differential luminescence thermometry (TBDLT) achieves a sensitivity of ≈7 mK and enables precise measurement of the net quantum efficiency of optical refrigerator materials. TBDLT detects internal temperature changes by decoupling surface and bulk heating effects via time-resolved luminescence spectroscopy. Several Yb{sup 3+}-doped fluorozirconate (ZBLANI) glasses fabricated from precursors of varying purity and by different processes are analyzed in detail. A net quantum efficiency of 97.39% at 238 K (at a pump wavelength of 1020.5 nm) is found for a ZBLANI:1%Yb{sup 3+} laser-cooling sample produced from metal fluoride precursors that were purified by chelate-assisted solvent extraction and dried in hydrofluoric gas. In comparison, a ZBLANI:1%Yb{sup 3+} sample produced from commercial-grade metal fluoride precursors showed pronounced laser-induced heating that is indicative of a substantially higher impurity concentration. TBDLT enables rapid and sensitive benchmarking of laser-cooling materials and provides critical feedback to the development and optimization of high-performance optical cryocooler materials.


Thermal Links for the Implementation of an Optical Refrigerator

Thermal Links for the Implementation of an Optical Refrigerator
Author:
Publisher:
Total Pages:
Release: 2008
Genre:
ISBN:

Download Thermal Links for the Implementation of an Optical Refrigerator Book in PDF, ePub and Kindle

Optical refrigeration has been demonstrated by several groups of researchers, but the cooling elements have not been thermally linked to realistic heat loads in ways that achieve the desired temperatures. The ideal thermal link will have minimal surface area, provide complete optical isolation for the load, and possess high thermal conductivity. We have designed thermal links that minimize the absorption of fluoresced photons by the heat load using multiple mirrors and geometric shapes including a hemisphere, a kinked waveguide, and a tapered waveguide. While total link performance is dependent on additional factors, we have observed net transmission of photons with the tapered link as low as 0.04%. Our optical tests have been performed with a surrogate source that operates at 625 nm and mimics the angular distribution of light emitted from the cooling element of the Los Alamos solid state optical refrigerator. We have confirmed the optical performance of our various link geometries with computer simulations using CODE V optical modeling software. In addition we have used the thermal modeling tool in COMSOL MULTIPHYSICS to investigate other heating factors that affect the thermal performance of the optical refrigerator. Assuming an ideal cooling element and a nonabsorptive dielectric trapping mirror, the three dominant heating factors are (1) absorption of fluoresced photons transmitted through the thermal link, (2) blackbody radiation from the surrounding environment, and (3) conductive heat transfer through mechanical supports. Modeling results show that a 1 cm3 load can be chilled to 107 K with a 100 W pump laser. We have used the simulated steady-state cooling temperatures of the heat load to compare link designs and system configurations.


Laser Cooling of Solids

Laser Cooling of Solids
Author: Richard I. Epstein
Publisher: SPIE-International Society for Optical Engineering
Total Pages: 140
Release: 2007
Genre: Science
ISBN:

Download Laser Cooling of Solids Book in PDF, ePub and Kindle

Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.


Solid State Optical Refrigeration Using Stark Manifold Resonances in Crystals

Solid State Optical Refrigeration Using Stark Manifold Resonances in Crystals
Author:
Publisher:
Total Pages:
Release: 2017
Genre:
ISBN:

Download Solid State Optical Refrigeration Using Stark Manifold Resonances in Crystals Book in PDF, ePub and Kindle

A method and device for cooling electronics is disclosed. The device includes a doped crystal configured to resonate at a Stark manifold resonance capable of cooling the crystal to a temperature of from about 110K to about 170K. The crystal host resonates in response to input from an excitation laser tuned to exploit the Stark manifold resonance corresponding to the cooling of the crystal.


Laser Cooling of Solids

Laser Cooling of Solids
Author: S V Petrushkin
Publisher: Elsevier
Total Pages: 237
Release: 2009-10-26
Genre: Technology & Engineering
ISBN: 1845696832

Download Laser Cooling of Solids Book in PDF, ePub and Kindle

Laser cooling is an important emerging technology in such areas as the cooling of semiconductors. The book examines and suggests solutions for a range of problems in the development of miniature solid-state laser refrigerators, self-cooling solid-state lasers and optical echo-processors. It begins by looking at the basic theory of laser cooling before considering such topics as self-cooling of active elements of solid-state lasers, laser cooling of solid-state information media of optical echo-processors, and problems of cooling solid-state quantum processors.Laser Cooling of Solids is an important contribution to the development of compact laser-powered cryogenic refrigerators, both for the academic community and those in the microelectronics and other industries. Provides a timely review of this promising field of research and discusses the fundamentals and theory of laser cooling Particular attention is given to the physics of cooling processes and the mathematical description of these processes Reviews previous experimental investigations in laser cooling and presents progress towards key potential applications