TITLE

The spatial distribution of small signal gain in a segmented hollow cathode discharge laser

AUTHOR(S)
Adamowicz, T.M.; Donkó, Z.; Szalai, L.; Rózsa, K.; Kwaśniewski, W.
PUB. DATE
October 1997
SOURCE
Applied Physics B: Lasers & Optics;1997, Vol. 65 Issue 4/5, p613
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present measurements of the spatial distribution of the small signal gain in the cross section of a longitudinally segmented hollow cathode discharge. This configuration proved to be the most efficient for pumping different cathode sputtered metal ion laser transitions excited by thermal energy charge transfer reactions. We performed the measurements for the CuII 780.8 nm transition for different currents and buffer gas pressures. At higher pressures there are two peaks in the gain distribution nearer to the cathode surface. With increasing current the gain increases faster in the center of the discharge and the gap between the two separate peaks tends to disappear. At the optimum pressure (where the gain is the highest), the gain has a maximum in the center of the discharge. Our results are generally valid for the charge transfer excited cathode sputtered UV metal ion lasers as well. The measured gain values are proportional to the gain of possible continuous VUV laser transitions around 150–160 nm, where the upper level is common with the upper level of the 780.8 nm transition.
ACCESSION #
8825606

 

Related Articles

  • Space-charge effects and current self-quenching in a metal/CdS/LaS cold cathode. Mumford, P.D.; Cahay, M. // Journal of Applied Physics;9/1/1998, Vol. 84 Issue 5, p2754 

    Analyzes the importance of space-charge effects in a cadmium sulfide/lanthanum sulfide cold cathode. Use of the Monte Carlo description of electron transport; results of the space-charge effects; Information on the limiting anode current density.

  • A high-power electron beam source based on the superemissive cathode. Hsu, T.-Y.; Gundersen, M.A. // Applied Physics Letters;11/23/1992, Vol. 61 Issue 21, p2515 

    Examines the high-powered electron beam source based on the superemissive refractory metal cathode. Effects of operational parameters on the electron beam generation; Definition of charge transfer efficiency; Effectiveness of pulse forming network in generating electron beams with square pulse.

  • Significant Improvement of Electrochemical Performance of Ni-rich Cathode Material by Polyethylene Coating. Byeong-Chan Jang; Jong-Tae Son // Journal of New Materials for Electrochemical Systems;2016, Vol. 19 Issue 3, p157 

    We attempted to use polyethylene (PE) to coat the surface of the cathode material in order to suppress these unnecessary reaction, and the results obtained via electrochemical impedance spectroscopy (EIS) suggest the growth of the SEI resistance and charge transfer resistance was suppressed in...

  • Modelling the porous cathode of a SOFC: oxygen reduction mechanism effect. Deseure, J.; Bultel, Y.; Dessemond, L.; Siebert, E.; Ozil, P. // Journal of Applied Electrochemistry;Jan2007, Vol. 37 Issue 1, p129 

    A composite electrode comprising a porous mixture of solid electrolyte (typically yttria stabilized zirconia, YSZ) and electronically conducting, electrocatalytic material (typically strontium doped lanthanum manganite, LSM) is generally used to improve the cathodic performance of the solid...

  • Cathodic Evolution of Hydrogen at Pd-Modified Carbon Fibre in 0.1 M NaOH. Pierozynski, Boguslaw; Kowalski, Ireneusz M.; Mikolajczyk, Tomasz; Turemko, Marcin // International Journal of Electrochemical Science;Nov2013, Vol. 8 Issue 11, p12264 

    This work is concerned with an a.c. impedance study of hydrogen evolution reaction (HER), performed on carbon fibre (CF) and Pd-modified carbon fibre 12K tow materials. The HER was examined in 0.1 M NaOH solution for electrochemically oxidized Hexcel 12K AS4C and Pd-modified Hexcel carbon fibre...

  • Influence of electrode thickness on the performance of composite electrodes for SOFC. Barbucci, Antonio; Carpanese, Mariapaola; Reverberi, Andrea P.; Cerisola, Giacomo; Blanes, Mireia; Cabot, Pere Luis; Viviani, Massimo; Bertei, Antonio; Nicolella, Cristiano // Journal of Applied Electrochemistry;Jul2008, Vol. 38 Issue 7, p939 

    Measurements on half-cells consisting of yttria-stabilized zirconia (YSZ) electrolyte pellets and slurry-coated cathodes of different thickness were performed in order to determine the active area for oxygen reduction in composite cathodes of lanthanum strontium manganite (LSM) and YSZ....

  • Quasielectrostatic instabilities excited by energetic oxygen ions in the ring current region. Singh, S. V.; Kakad, A. P.; Lakhina, G. S. // Physics of Plasmas;Jan2005, Vol. 12 Issue 1, p012903 

    Quasielectrostatic instabilities driven by anisotropic oxygen ions are investigated during storms/substorms in three-component ring current plasma consisting of electrons, protons, and energetic oxygen ions having loss-cone distribution. The response of the electrons is fully electromagnetic and...

  • Simple Circuit Provides Low-Current, Regulated Voltage Boost. Curtis, Keith // Electronic Design;3/10/2011, Vol. 59 Issue 3, p71 

    The article presents the author's insights on using capacitive voltage doubler in regulating a 15 volts (V) raw power supply. He mentions that capacitive-based voltage multiplier was used for the cathode ray tube (CRT) of television designs. He states that the Villard Cascade Voltage Multiplier...

  • Fast switchable electrochromic properties of tungsten oxide nanowire bundles. Yoo, Sung Jong; Lim, Ju Wan; Sung, Yung-Eun; Jung, Young Hwa; Choi, Hong Goo; Kim, Do Kyung // Applied Physics Letters;4/23/2007, Vol. 90 Issue 17, p173126 

    The authors prepared uniformly shaped WO2.72 nanowire bundles using the solvothermal synthesis method. They investigated the potential of the WO2.72 nanowire bundles to be used as a cathode electrode for electrochromic devices and the effect of the Li+ insertion (or extraction) kinetics and...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics