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

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Photoionization-pumped gain at 185 nm in a laser-ablated indium plasma. / Lacy, R. A; Nilsson, A. C; Byer, R. L; Silfvast, W. T; Wood, O. R; Svanberg, Sune.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 6, No. 6, 1989, p. 1209-1216.

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Lacy, R. A ; Nilsson, A. C ; Byer, R. L ; Silfvast, W. T ; Wood, O. R ; Svanberg, Sune. / Photoionization-pumped gain at 185 nm in a laser-ablated indium plasma. In: Journal of the Optical Society of America B: Optical Physics. 1989 ; Vol. 6, No. 6. pp. 1209-1216.

RIS

TY - JOUR

T1 - Photoionization-pumped gain at 185 nm in a laser-ablated indium plasma

AU - Lacy, R. A

AU - Nilsson, A. C

AU - Byer, R. L

AU - Silfvast, W. T

AU - Wood, O. R

AU - Svanberg, Sune

PY - 1989

Y1 - 1989

N2 - We reportwhat is to our knowledge the first production of gain by inner-shell photoionization of ions. Photoionization of 4d electrons from In$+$ ions created a population inversion on a 185-nm In2$+$ transition. This scheme is an isoelectronic scaling of the 442-nm Cd$+$ laser. A single-pass gain constant of 0.9 {\textpm} 0.3 cm{\textminus}1 over a 0.4-cm path was pumped by soft x rays generated by less than 50 mJ of 1.06-$\mu$m light focused onto a tantalum target. Laser ablation of a liquid-indium target provided a high density (1016 cm{\textminus}3) of ground-state In$+$ ions for this scheme. An indium amplified spontaneous emission laser and a synchronously pumped indium laser oscillator are proposed.

AB - We reportwhat is to our knowledge the first production of gain by inner-shell photoionization of ions. Photoionization of 4d electrons from In$+$ ions created a population inversion on a 185-nm In2$+$ transition. This scheme is an isoelectronic scaling of the 442-nm Cd$+$ laser. A single-pass gain constant of 0.9 {\textpm} 0.3 cm{\textminus}1 over a 0.4-cm path was pumped by soft x rays generated by less than 50 mJ of 1.06-$\mu$m light focused onto a tantalum target. Laser ablation of a liquid-indium target provided a high density (1016 cm{\textminus}3) of ground-state In$+$ ions for this scheme. An indium amplified spontaneous emission laser and a synchronously pumped indium laser oscillator are proposed.

U2 - 10.1364/JOSAB.6.001209

DO - 10.1364/JOSAB.6.001209

M3 - Article

VL - 6

SP - 1209

EP - 1216

JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

SN - 0740-3224

IS - 6

ER -