Photoionization-pumped gain at 185 nm in a laser-ablated indium plasma

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · J. Opt. Soc. Am. B: Opt. Phys.; (United States)

DOI:https://doi.org/10.1364/JOSAB.6.001209· OSTI ID:6183934

Lacy, R A; Nilsson, A C; Byer, R L; Silfvast, W T; Wood, II, O R; Svanberg, S

We report what is to our knowledge the first production of gain byinner-shell photoionization of ions. Photoionization of 4/ital d/ electrons fromIn/sup +/ ions created a population inversion on a 185-nm In/sup 2 +/ transition.This scheme is an isoelectronic scaling of the 442-nm Cd/sup +/ laser. Asingle-pass gain constant of 0.9+-0.3 cm/sup /minus/1/ over a 0.4-cm path was pumpedby soft x rays generated by less than 50 mJ of 1.06-..mu..m light focused onto atantalum target. Laser ablation of a liquid-indium target provided a highdensity (10/sup 16/ cm/sup /minus/3/) of ground-state In/sup +/ ions for this scheme.An indium amplified spontaneous emission laser and a synchronously pumped indiumlaser oscillator are proposed.

• Research Organization: Department of Applied Physics, Stanford University, Stanford, California 94305(US); ATandT Bell Laboratories, Holmdel, New Jersey 07733; Lund Institute of Technology, Department of Physics, P.O. Box 118, S-221 00 Lund, Sweden
• OSTI ID: 6183934
• Journal Information: J. Opt. Soc. Am. B: Opt. Phys.; (United States), Journal Name: J. Opt. Soc. Am. B: Opt. Phys.; (United States) Vol. 6:6; ISSN JOBPD
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ABLATION
AMPLIFICATION
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY-LEVEL TRANSITIONS
FAR ULTRAVIOLET RADIATION
GAIN
GAS LASERS
INDIUM IONS
INNER-SHELL IONIZATION
IONIZATION
IONS
LASER-PRODUCED PLASMA
LASERS
METAL VAPOR LASERS
PHOTOIONIZATION
PLASMA
POPULATION INVERSION
RADIATIONS
SPECTRA
STIMULATED EMISSION
ULTRAVIOLET RADIATION
ULTRAVIOLET SPECTRA