Conference Proc Nameplate

Flickr Twitter iResearch App Facebook

Search Volume | RSS Feeds RSS
SPACE TECHNOLOGY INTERNATIONAL FORUM: Conference on Space Transportation Date: Location: ISBN: 1-56856-235-X Editor(s): Test, Carole S. Allman, Carole S. Allman, Margot Smith, David Saltzberg, Test Troscher
Page 1 of 2 Pages Next Page | Jump to Page

Pulse length limitations in self‐sustained discharge XeCl∗ lasers

D. C. Hogan, A. J. Kearsley, C. E. Webb, and R. Bruzzese

AIP Conf. Proc. 100, pp. 1-5; doi:http://dx.doi.org/10.1063/1.34050 (5 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
We provide experimental evidence to show that the onset of constriction of the active discharge region is the major cause of premature pulse termination in a long pulse duration (270 ns FWHM), resistively ballasted, XeCl∗ laser. The observation that the discharge invariably becomes more unstable against constriction as the partial pressure of the electron attaching component (HC1) in the gas mixture is increased is contrary to the predictions previously published theories of instabilities in RGH laser discharges. These theories cannot be reconciled with the experimental results presented here because they do not take explicit account of the intrinsically spatial nature of the constriction mechanism.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers

Design considerations for RF pumping of rare gas halide lasers

R. W. Waynant, C. P. Christensen, and W. M. Bollen

AIP Conf. Proc. 100, pp. 6-11; doi:http://dx.doi.org/10.1063/1.34075 (6 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
RF discharges at 200 MHz and 9.3 GHz have produced lasing in XeF. These discharges have been studied and appear to be well characterized by two stages. In the first stage a uniform discharge is produced inside the laser‐tube by the microwaves. During the second stage a traveling surface wave, launched by the conditions of the plasma, dominates the plasma discharge in the laser tube. This surface wave sustains a non‐uniform plasma with high electron concentration near the walls of the tube. Experimentally this non‐uniformity has been avoided in small diameter (< lmm) tubes.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems

Gain and discharge characteristics of electron‐beam switched KrF lasers

Hitoshi Shimazaki, Susumu Nakamura, Minoru Obara, and Tomoo Fujioka

AIP Conf. Proc. 100, pp. 12-18; doi:http://dx.doi.org/10.1063/1.34039 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
Although small‐signal gain measurements of rare‐gas halide lasers were recently carried out only for direct electron‐beam‐pumped and self‐sustained‐discharge pumped lasers, there is not report on the gain measurement of the electron‐beam‐switched‐discharge KrF laser. Electron‐beam switched discharge pumped KrF lasers are studied to obtain detailed experimental data on the relationship between the discharge stability and the small‐signal gain coefficient g0. As a result, we obtained a high gain coefficient g0 in excess of 11%/cm and clarified the relationship between the discharge stability and the small‐signal gain coefficient. The electron‐beam‐switched‐discharge pumping which needs no gap switches in the discharge circuit is especially suitable for high‐rep.‐rated rare‐gas halide lasers.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers

Direct measurement of saturation property of an electron beam pumped KrF laser

E. Fujiwara, T. Kishimoto, Y. Kato, and C. Yamanaka

AIP Conf. Proc. 100, pp. 19-25; doi:http://dx.doi.org/10.1063/1.34049 (7 pages) | Cited 1 time

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
The small signal gain coefficient, the saturation intensity, and the absorption coefficient of an electron‐beam pumped KrF laser were measured by a probe laser at pumping rates of 0.9−1.5 MW/cm3 and pressures of 1140−1900 torr. Half reduction of the absorption coefficient was observed at the probe laser intensity of more than the saturation intensity. The experimental data was compared with a laser kinetic simulation and good agreement was observed.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers

Discharge characteristics and output performance of a UV‐preionized XeCl laser

K. Midorikawa, H. Hokazono, Y. Itoh, M. Obara, and T. Fujioka

AIP Conf. Proc. 100, pp. 26-32; doi:http://dx.doi.org/10.1063/1.34059 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
Discharge characteristics and output performance of a self‐sustained discharge XeCl laser have been investigated exxperimentally and theoretically. The operating E/P and discharge resistivity in a quasi‐steady state were studied with Ne‐ and He‐based mixtures; E is the electric field strength and P the operating pressure. Electron energy distribution functions of these mixture became almost equal at each E/P. Small absorption and faster gain build‐up due to faster ion‐ion recombination resulted in more efficient energy extraction in Ne‐based mixture. Moreover, our theoretical model predicted the further scaling limitation not due to the build‐up of nonsaturable absorption but due to the consumption of HC1.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers

Efficiency optimization for discharge‐excited high‐energy excimer laser

D. E. Rothe, C. Wallace, and T. Petach

AIP Conf. Proc. 100, pp. 33-44; doi:http://dx.doi.org/10.1063/1.34067 (12 pages) | Cited 1 time

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
A unique, x‐ray preionized, electric discharge‐excited XeCl laser was designed, constructed and optimized for the purpose of demonstrating high laser efficiencies. Several parallel‐plate water pulse‐forming networks (PFNs) were evaluated experimentally. A parametric study was performed with a douBle‐sided blumlein configuration and was supported by computer modeling.
High energy transfer efficiency from the PFN to the discharge plasma requires fast avalanche discharge formation as well as good impedance matching between PFN (source) and discharge (load). This paper establishes the fact that conventional PFNs cannot satisfy these two conditions simultaneously. By employing a separate pulse for breaking down the gas quickly and an impedance‐matched pulse forming line for transferring most of the pump energy, the transfer efficiency was almost doubled, and the laser efficiency goal of 3% was exceeded.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems

Wide aperture self‐sustained discharge KrF and XeCl lasers

S. Watanabe, A. Endoh, and M. Watanabe

AIP Conf. Proc. 100, pp. 45-51; doi:http://dx.doi.org/10.1063/1.34071 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Abstract Unavailable
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems

Further studies of large aperture XeCl discharge laser performance

B. L. Wexler and R. L. Burnham

AIP Conf. Proc. 100, pp. 52-58; doi:http://dx.doi.org/10.1063/1.34072 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
A XeCl discharge laser with 10 cm electrode spacing, discharge width 6 cm, and 40 cm active length has been operated, driven by a 200 nS water line. Maximum output to date is 8 Joules at 4 atmospheres. Operation has also been studied without the rail gap switch, at reduced performance levels.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers

Sprite‐a high power E‐beam pumped KrF laser

C. B. Edwards, F. O’Neill, M. J. Shaw, D. Baker, and D. Craddock

AIP Conf. Proc. 100, pp. 59-65; doi:http://dx.doi.org/10.1063/1.34073 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
This paper describes a high power KrF laser pumped by multiple electron beams. Laser triggered switching is used to synchronize the beams to a few ns. Up to 10 kJ in a 60 ns pulse is switched out from four pulse forming lines using less than 20 mJ of KrF radiation. An unstable resonator is used with a four pass injection scheme which results in ≳200 J output at 249 nm in a low divergence beam.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems

A high average power excimer laser

Robert R. Butcher, Roger A. Tennant, George F. Erickson, Steven L. Swisher, and Walter L. Willis

AIP Conf. Proc. 100, pp. 66-72; doi:http://dx.doi.org/10.1063/1.34074 (7 pages) | Cited 2 times

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
An excimer laser developed at Los Alamos produces an ultraviolet (308 nm) output power of 200 W average at a repetition rate of 500 Hz. This electrical‐discharge‐pumped XeCl laser uses x‐ray preionization and acctive gas cleanup.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems

Inductively stabilized long‐pulsed excimer lasers

Robert C. Sze

AIP Conf. Proc. 100, pp. 73-79; doi:http://dx.doi.org/10.1063/1.34076 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
Excimer lasers are stabilized using electrodes with series stabilizing inductors. Intrinsic efficiencies as high as one percent are obtained in the miniature laser systems and laser pulse widths as long as 120 ns are observed.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems

Excimer lasers with high spectral brightness working in the regenerative amplifier regime

W. Mückenheim, K. Hohla, E. Albers, H. v. Bergmann, and D. Basting

AIP Conf. Proc. 100, pp. 80-98; doi:http://dx.doi.org/10.1063/1.34077 (19 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Abstract Unavailable
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems
42.60.Da Resonators, cavities, amplifiers, arrays, and rings

Mercury halide spectroscopy

Joel Tellinghuisen

AIP Conf. Proc. 100, pp. 99-106; doi:http://dx.doi.org/10.1063/1.34078 (8 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
The B−X, C−X, and D−X transitions of HgCl, HgBr, and HgI are reanalyzed using Tesla discharge sources containing single isotopic species of these molecules. Direct, simultaneous least‐squares fits of all transitions yield optimal vibrational constants for all four states. Low‐resolution studies of the emission as a function of buffer gas pressure show effects of vibrational relaxation in the B state and collisional quenching of the C and D states. The broad B−A bands in the red and infrared are weak but clearly present, in support of a recent report of this transition in HgBr. In addition there is evidence of other transitions, previously unreported for these molecules, including a very weak system near 2200 Å in HgI, which shows fine red‐degraded vibrational band structure.
Show PACS
33.20.Tp Vibrational analysis
33.20.Kf Visible spectra
33.20.Lg Ultraviolet spectra
33.15.Mt Rotation, vibration, and vibration-rotation constants

Cryogenic gas purification and lifetime extension of ArF, KrF and XeF laser gas mixtures

A. J. Kearsley, A. J. Andrews, C. E. Webb, K. Errey, and J. Coutts

AIP Conf. Proc. 100, pp. 107-111; doi:http://dx.doi.org/10.1063/1.34034 (5 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
A method of purification of rare gas halide laser gas mixtures leading to large increases in operational lifetime is reported. Impurity analyses are presented.
Show PACS
43.55.Fw Auditorium and enclosure design
82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces

Transient Index of XeF

C. Woods, K. Tand, and C. Howton

AIP Conf. Proc. 100, pp. 112-115; doi:http://dx.doi.org/10.1063/1.34035 (4 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Abstract Unavailable
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers

High‐energy ultraviolet I2 laser

C. R. Jones, K. D. Ware, and O. F. Swenson

AIP Conf. Proc. 100, pp. 116-120; doi:http://dx.doi.org/10.1063/1.34036 (5 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
We have used exploding metal films and wires to optically pump the 342‐nm I2 laser. Specific output energies as high as 18 joules/liter and electrical efficiencies up to 0.27% have been measured. Several parametric studies have been conducted.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers

Tuning and saturation behavior of the anti‐skokes raman laser

J. C. White and D. Henderson

AIP Conf. Proc. 100, pp. 121-127; doi:http://dx.doi.org/10.1063/1.34037 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
The tuning and saturation behavior of the anti‐Stokes Raman laser is examined experimentally for the first time in a Raman medium of inverted, metastable T1∗ (6p 2P03/2). Two significant regions of saturation are identified corresponding to atomic saturation and pump depletion of the input laser field.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.65.Dr Stimulated Raman scattering; CARS
42.65.Es Stimulated Brillouin and Rayleigh scattering
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
42.60.By Design of specific laser systems

Two and three photon ionization of xenon

A. W. McCown, M. N. Ediger, and J. G. Eden

AIP Conf. Proc. 100, pp. 128-142; doi:http://dx.doi.org/10.1063/1.34038 (15 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
Two and three photon ionization of Xe has been studied using excimer lasers. Employing a microwave bridge to determine the temporal behavior of the absolute photoelectron density, the cross‐section for two photon ionization of Xe at 193 nm has been measured to be (4±1)⋅10−32 cm4−W−1. An order of magnitude improvement in the peak electron density is realized by ionizing Xe with two XeF (351.1 nm) and one ArF (193.3 nm) photons. This process is resonantly enhanced by the 6p[1/2]0 level of Xe. The strong, selective pumping of this state has resulted in the observation of stimulated emission on the Xe {6p[1/2]0→6s[3/2]11} transition at 828.0 nm−the first optically pumped rare gas laser.
Show PACS
32.80.Fb Photoionization of atoms and ions
32.80.Rm Multiphoton ionization and excitation to highly excited states
32.80.Wr Other multiphoton processes

Wavelength conversion with excimer lasers

J. Bokor, L. Eichner, R. H. Storz, P. H. Bucksbaum, and R. R. Freeman

AIP Conf. Proc. 100, pp. 143-150; doi:http://dx.doi.org/10.1063/1.34040 (8 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
Harmonic generation was studied using a high powered, ultrashort pulse KrF excimer laser. Third, fifth, and seventh harmonic outputs were observed at 82.8 nm, 49.7 nm, and 35.5 nm. The nonlinear interaction took place at the interaction of thee laser focus with a pulsed, supersonic gas jet expansion.
Show PACS
42.65.Dr Stimulated Raman scattering; CARS
42.65.Es Stimulated Brillouin and Rayleigh scattering
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation

High‐power VUV stimulated emission from two‐photon excited H2

H. Pummer, H. Egger, T. S. Luk, T. Srinivasan, and C. K. Rhodes

AIP Conf. Proc. 100, pp. 151-157; doi:http://dx.doi.org/10.1063/1.34041 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
Stimulated emission in molecular hydrogen, on both the Lyman and Werner bands excited by two quantum absorption at 193 nm, has resulted in the generation of radiation as short as 117.6 nm at an efficiency of conversion approaching one percent.
Show PACS
33.80.Be Level crossing and optical pumping
42.62.-b Laser applications
33.20.Ea Infrared spectra
33.20.Ni Vacuum ultraviolet spectra

Third‐harmonic conversion of XeF laser radiation

M. Dlabal, J. Reintjes, and L. L. Tankersley

AIP Conf. Proc. 100, pp. 158-164; doi:http://dx.doi.org/10.1063/1.34042 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
The first observation of third‐harmonic conversion of XeF laser radiation is reported. Xe was found to be a suitable converting medium, with conversion dominated by effects related to three photon resonant enhancement.
Show PACS
42.65.Dr Stimulated Raman scattering; CARS
42.65.Es Stimulated Brillouin and Rayleigh scattering
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation

Use of XeCl amplifiers for degenerate four‐wave mixing

B. L. Wexler, N. Djeu, and J. Reintjes

AIP Conf. Proc. 100, pp. 165-171; doi:http://dx.doi.org/10.1063/1.34043 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
The use of a laser amplifier as a Degenerate Four‐Wave Mixing (DFWM) element for phase conjugation is a powerful general technique, particularly useful for UV excimer lasers. In this paper we will discuss our initial experiments, which yielded the first demonstration of DFWM in a XeCl amplifier.
Show PACS
42.60.Da Resonators, cavities, amplifiers, arrays, and rings
42.55.Lt Gas lasers including excimer and metal-vapor lasers

Phase conjugation at 193 nm

M. C. Gower

AIP Conf. Proc. 100, pp. 172-176; doi:http://dx.doi.org/10.1063/1.34044 (5 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
We have measuredd phase conjugate reflectivities at 193 nm of 11% using stimulated Brillouin scattering of ArF laser radiation from 2,2,2, ‐Trifluoroethanol (CF3CH2OH). This mirror has been shown to correct for the aberrations induced on the wavefront by an ArF amplifier.
Show PACS
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.65.Dr Stimulated Raman scattering; CARS
42.65.Es Stimulated Brillouin and Rayleigh scattering
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
78.35.+c Brillouin and Rayleigh scattering; other light scattering
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation

SRS of XeF laser radiation in hydrogen using collimated beams

S. F. Fulghum, D. W. Trainor, C. Duzy, and H. A. Hyman

AIP Conf. Proc. 100, pp. 177-180; doi:http://dx.doi.org/10.1063/1.34045 (4 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Abstract Unavailable
Show PACS
51.70.+f Optical and dielectric properties
42.65.Dr Stimulated Raman scattering; CARS
42.65.Es Stimulated Brillouin and Rayleigh scattering
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation

Wavelength dependence of raman scattering cross sections from 200‐600 nm

W. K. Bischel and G. Black

AIP Conf. Proc. 100, pp. 181-187; doi:http://dx.doi.org/10.1063/1.34046 (7 pages)

Online Publication Date: 29 May 2008

Full Text: Download PDF

Show Abstract
We have used a combination of ArF, KrF, and Nd:YAG lasers to experimentally determine the wavelength dependence of the absolute vibrational Raman scattering cross section for H2, D2, CH4, N2, and O2 for laser wavelengths spanning the range 200‐600 nm.
Show PACS
33.20.Fb Raman and Rayleigh spectra (including optical scattering)
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation
Page 1 of 2 Pages Next Page | Jump to Page
Close
ADVERTISEMENT
Featured Jobs
University of Exeter
GBR - Devon
Chair and Lecturer (2 posts)

Sandia National Laboratories
US - NM - Albuquerque
Post Doc – Nuclear/ Nanoparticle Materials

Syracuse University
US - NY - Syracuse
Postdoc in Experimental CM Physics

University of Rochester
US - NY - Rochester
Biomedical Optics

More Jobs

Go to AIP Home
Copyright © American Institute of Physics
close