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检索条件"任意字段=Conference on High-Power Diode Laser Technology and Applications XII"

共 1431 条记录，以下是1421-1430 订阅

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NEW SLAB AND SOLID-STATE laser TECHNOLOGIES AND applications.

NEW SLAB AND SOLID-STATE LASER TECHNOLOGIES AND APPLICATIONS...

引用

ISBN: (纸本)0892527714

This conference contains 13 articles on developments in the field of slab and solid-state laser technology. Among the topics covered are: fracture mechanisms in slab lasers;strengthened glass for high average power application;fixed cavity lasers;scaling and configuring diode pumped slab lasers;thermal fracture in nonlinear optical materials;second harmonic generation in slab lasers;solar pumped solid state lasers;zigzag optical path slab lasers;and nonlinear optics for high average power.

关键词： laserS, SOLID STATE

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Intense pulsed ion source in Tokyo Institute of technology

Intense pulsed ion source in Tokyo Institute of Technology

引用

Sixth IEEE Pulsed power conference - Digest of Technical Papers

作者： Kasuya, K. Horioka, K. Yoneda, H. Tokyo Inst of Technol Dep of Energy Sci Yokohama Jpn

Three kinds of experiments concerning intense pulsed ion sources are described. They are (1) the extraction of high-purity of pulsed ion beams from a cryogenic diode, (2) spectroscopic measurements of anode plasma, and (3) resonant-laser production of lithium plasma production by resonant laser light for a lithium beam source. The anode is cooled by an inverse Stirling cycle refrigerator, and nitrogen ice is used as the ion source. The energy spectra and the purity of the beams are measured with a Thomson mass-energy analyzer. A nearly 100% nitrogen ion beam is extracted from the nitrogen ice. The cryogenic anode is used for measurements of anode plasma, because it can use various kinds of materials as the ion sources. The electron number density is estimated from the Stark line broadening, and the electron temperature is estimated from the intensity ratio of hydrogen lines. The expansion of the anode plasma is also examined. A resonant dye laser is used to vaporize and ionize the thin lithium layer. A high-density (approximately 1017/cm3) plasma layer is produced by laser light of 400-mJ/cm2 power. The plasma seems to be produced by resonant saturation, because the power density of the laser is relatively low (approximately MW/cm2), and the spectral width of the dye laser has an effect on the plasma production.

关键词： Ion Sources

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SINGLE MODE diode laser FOR OPTICAL SCANNING AND RECORDING.

SINGLE MODE DIODE LASER FOR OPTICAL SCANNING AND RECORDING.

引用

Scientific and Engineering applications of Commercial laser Devices. Papers from the 1986 O-E/LASE conference.

作者： Fu, R.J. Hwang, C.J. Wang, C.S. General Optronics Corp Edison NJ USA General Optronics Corp Edison NJ USA

ISBN: (纸本)0892526459

We have developed a high power laser suitable for use in holo-graphic scanning. Its high power and single transverse mode feature are also useful in optical disk recording. The device is called channeled-substrate narrow stripe laser with double current confinement and large optical cavity. In this structure, stable single longitudinal mode is achieved by strong index guiding and special facet coating. Single transverse mode is maintained by good lateral electrical and optical confinements. The high power capability is obtained by the use of large optical cavity. The resultant is a buried crescent-shaped active region with an additional reverse-biased p-n junction. Light output up to 50 mw is obtained at 790 nm in cw operation at room temperature. Threshold current as low as 30 ma and differential quantum efficiency as high as 60% are achieved. high quality beam with minimum astigmatism and a divergence angle of 32 degree multiplied by 10 degree (FWHM) is maintained throughout the whole power range. This laser has been incorporated into our Holoscan laser printer which is now commercially available. It is also being used in a variety of prototype disk recording systems.

关键词： lasers, Semiconductor

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FREQUENCY-DOUBLED, diode PUMPED Nd:YAG laserS.

FREQUENCY-DOUBLED, DIODE PUMPED Nd:YAG LASERS.

引用

Scientific and Engineering applications of Commercial laser Devices. Papers from the 1986 O-E/LASE conference.

作者： Baer, Thomas M. Spectra-Physics Inc Mountain View CA USA Spectra-Physics Inc Mountain View CA USA

The characteristics of high power laser diode arrays which make them a useful pump source for solid state laser systems are described.

ISBN: (纸本)0892526459

The characteristics of high power laser diode arrays which make them a useful pump source for solid state laser systems are described.

关键词： laserS, SOLID STATE

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HELIUM CADMIUM (HeCd) laserS, SEMICONDUCTOR diode laserS AND laser STABILIZATION IN PRINTING AND INFORMATION PROCESSING.

HELIUM CADMIUM (HeCd) LASERS, SEMICONDUCTOR DIODE LASERS AND...

引用

Scientific and Engineering applications of Commercial laser Devices. Papers from the 1986 O-E/LASE conference.

作者： Dowley, Mark W. Kimball, Randy LiCONiX Sunnyvale CA USA LiCONiX Sunnyvale CA USA

ISBN: (纸本)0892526459

The application of short wavelength helium cadmium lasers to printing and information processing is discussed. Features of these lasers which make them useful in high resolution systems are examined. Recent technical improvements in stability and noise control are noted. The advent of hard seal tube technology to this laser type is also noted. The rapid emergence of semiconductor diode lasers as viable sources is discussed and the problems relating to the incorporation of diode lasers into systems are addressed. A new turnkey cw diode laser system is reviewed and its applicability to R&D and prototype use is pointed out. Custom laser diode drivers (LDD's) are mentioned and a specific example given. A laser stabilization accessory designed for extreme power stability and noise reduction is described.

关键词： laserS, SEMICONDUCTOR

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1. 3 mu m EDGE EMITTING LEDs FOR OPTICAL COMMUNICATION.

1. 3 mu m EDGE EMITTING LEDs FOR OPTICAL COMMUNICATION.

引用

Scientific and Engineering applications of Commercial laser Devices. Papers from the 1986 O-E/LASE conference.

作者： Ceruzzi, A. Wessel, T. Henein, G. Philipp-Rutz, E. Dougherty, G. M/A-Com Laser Diode Inc New Brunswick NJ USA M/A-Com Laser Diode Inc New Brunswick NJ USA

ISBN: (纸本)0892526459

In the last years, high quality silica optical fibers have been developed where a reduction in the OH content resulted in a transmission loss lower than 0. 5 db/km at a wave length range of 1. 3 mu m. Edge emitting InGaAsP/InP double heterostructure LEDs have been developed for this wavelength range that are efficiently coupled to single and multimode optical fibers. Optical fiber communication systems employing 1. 3 mu m edge light emitting diodes (ELEDs) as transmitting sources offer advantages over lasers for both multi and single mode applications. Their reliability is higher, they are less sensitive to changes in temperature or variations of the drive current. Their driver circuits are simpler. Device fabrication of the 1. 3 mu m ELED is reported. The design and performance of a 1. 3 mu m truncated stripe ELED is discussed. Characteristics such as output power versus temperature, modulation bandwidth, spectrum, linearity and reliability data are reported. The packaging and coupling stability for single and multimode fiber pigtails are described.

关键词： OPTICAL COMMUNICATION EQUIPMENT

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high-power diode laserS FOR OPTICAL COMMUNICATIONS applications.

HIGH-POWER DIODE LASERS FOR OPTICAL COMMUNICATIONS APPLICATI...

引用

conference Record - 1985 IEEE Military Communications conference, MILCOM '85: The Electronic Battle: A New Era in Communications.

作者： Carlin, D.B. Goldstein, B. Channin, D.J. RCA Lab Princeton NJ USA RCA Lab Princeton NJ USA

high-power, single-mode, double-heterojunction AlGaAs diode lasers are being developed to meet source requirements for both fiber-optic local-area-network and free-space communications systems. An individual device, based on the channeled-substrate-planar (CPS) structure, has yielded single spatial and longitudinal mode outputs of up to 90 mW cw, and has maintained a single spatial mode to 150 mW cw. Phase-locked arrays of closely spaced indexed-guided lasers have been fabricated with the aim of multiplying the outputs of the individual devices to even higher power levels in a stable, single-lobed, anastigmatic beam. The optical modes of the lasers in such arrays can couple together in such a way that they appear to be emanating from a single source, and can therefore be efficiently coupled into optical communications systems. The authors review the state of high-power laser technology and discuss the communication system implications of these devices.

关键词： Optical communication

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high-power diode lasers for Optical Communications applications

High-Power Diode Lasers for Optical Communications Applicati...

引用

MILCOM, Military Communications conference

作者： D. B. Carlin B. Goldstein D. J. Channin RCA Laboratories Limited Princeton NJ USA

high-power, single-mode, double-heterojunction AlGaAs diode lasers are being developed to meet source requirements for both fiber optic local area network and free space communications systems. An individual device, based on the channeled-substrate-planar (CSP) structure, has yielded single spatial and longitudinal mode outputs of up to 90 mW cw, and has maintained a single spatial mode to 150 mW cw. Phase-locked arrays of closely spaced index-guided lasers have been designed and fabricated with the aim of multiplying the outputs of the individual devices to even higher power levels in a stable, single-lobed, anastigmatic beam. The optical modes of the lasers in such arrays can couple together in such a way that they appear to be emanating from a single source, and can therefore be efficiently coupled into optical communications systems. This paper will review the state of high-power laser technology and discuss the communication system implications of these devices.

关键词： diode lasers Optical fiber communication Optical arrays laser modes Phased arrays Optical coupling Optical fibers Optical fiber LAN Fiber lasers laser stability

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D2O laser Thomson Scattering and Submillimeter Heterodyne Receiver Measurements

D2O Laser Thomson Scattering and Submillimeter Heterodyne Re...

引用

International conference on Infrared and Millimeter Waves

作者： P. Woskoboinikow H. C. Praddaude W. J. Mulligan D. R. Cohn B. Lax H. R. Fetterman Massachusetts Institute of Technology Cambridge MA USA

ISBN: (纸本)9781509031856

The MIT program to develop high power collective Thomson scattering diagnostics will be presented. All elements of a 385 μm D 2 O laser Thomson scattering diagnostic are in place and operational on the Alcator C tokamak. Major components include: a 0.5 MW, 150 ns D 2 O laser; a heterodyne receiver using a corner reflector mounted Schottky diode mixer and a 25 mW, 381 μm DCOOD laser local oscillator; and x-band I.F. electronics including a 32 channel multiplexer filter centered at 9.4 GHz with 80 MHz wide channels. Receiver noise temperatures (not including signal collection optics) of 15,000-20,000 K double sideband (DSB) have been measured for individual filter channels. Additional details of the D 2 O laser, the receiver and the overall implementation of this diagnostic on Alcator C have been described previously [1-3].

关键词： Measurement by laser beam Scattering Receivers laser beams Plasmas Plasma measurements Magnetic field measurement

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Status of Submillimeter-Wave Thomson Scattering Ion Temperature Diagnostic Implementation in Alcator C

Status of Submillimeter-Wave Thomson Scattering Ion Temperat...

引用

International conference on Infrared and Millimeter Waves

作者： H. C. Praddaude P. Woskoboinikow W. J. Mulligan D. R. Cohn B. Lax Massachusetts Institute of Technology Cambridge MA USA

ISBN: (纸本)9781509031849

The M.I.T. submillimeter-wave (SMM) Thomson scattering ion temperature diagnostic for the Alcator C tokamak is the first such implementation on a major plasma fusion machine. Successful measurement of the ion temperature using this technique will represent a major breakthrough for the determination of this critical parameter in present machines and planned demonstration reactors. The present implementation of this diagnostic makes use of state of the art high power, narrow linewidth SMM lasers (like the 385 Jim D 2 O laser reported at this conference), a low noise Shottky barrier diode heterodyne receiver, and signal processing equipment. The simultaneous availability of this equipment will make possible, for the first time, the experimental test of the physical concepts involved in this diagnostic.

关键词： laser beams Scattering Plasmas Measurement by laser beam Structural beams Pump lasers Particle beams

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