Femtosecond-pulse-driven, electron-excited XUV lasers in eight-times-ionized noble gases

B. E. Lemoff; C. P. J. Barty; S. E. Harris

doi:10.1364/OL.19.000569

Optics Letters
Vol. 19,
Issue 8,
pp. 569-571
(1994)
•https://doi.org/10.1364/OL.19.000569

Femtosecond-pulse-driven, electron-excited XUV lasers in eight-times-ionized noble gases

B. E. Lemoff, C. P. J. Barty, and S. E. Harris

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B. E. Lemoff, C. P. J. Barty, and S. E. Harris, "Femtosecond-pulse-driven, electron-excited XUV lasers in eight-times-ionized noble gases," Opt. Lett. 19, 569-571 (1994)

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Abstract

We propose three XUV laser schemes in the 30–50-nm wavelength region that can be driven by 10-Hz ultrashort-pulse terawatt laser systems. Tunneling ionization by circularly polarized radiation produces both the ions and hot electrons necessary to excite the upper laser level.

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Ion	Transition	R (cm³/s)
Ar ix	¹S₀ 2p⁶ → ¹P₁ 2p⁵ 3s	2.3 × 10⁻¹⁰
	¹S₀ 2p⁶ → ¹S₀ 2p⁵ 3p	1.6 × 10⁻⁹
	¹S₀ 2p⁵3p → ¹P₁ 2p⁵ 3s	5.9 × 10⁻⁸
	¹S₀ 2p⁵3p → ¹P₁ 2p⁵ 3d	1.1 × 10⁻⁷
Kr ix	¹S₀ 3d¹⁰ → ¹P₁ 3d⁹ 4p	7.3 × 10⁻⁹
	¹S₀ 3d¹⁰ → ¹S₀ 3d⁹ 4d	9.9 × 10⁻⁹
	¹S₀ 3d⁹ 4d → ¹P₁ 3d⁹ 4p	7.9 × 10⁻⁸
	¹S₀ 3d⁹ 4d → ¹P₁ 3d⁹ 4f	1.9 × 10⁻⁷
Xe ix	¹S₀ 4d¹⁰ → ¹P₁ 4d⁹ 5p	1.3 × 10⁻⁸
	¹S₀ 4d¹⁰ → ¹S₀ 4d⁹ 5d	1.5 × 10⁻⁸
	¹S₀ 4d⁹ 5d → ¹P₁ 4d⁹ 5p	1.7 × 10⁻⁷
	¹S₀ 4d⁹ 5d → ¹P₁ 4d⁹ 4f	3.2 × 10⁻⁷
	¹S₀ 4d⁹ 5d → ¹P₁ 4d⁹ 5f	1.7 × 10⁻⁷

Laser Line	Density (cm⁻³)	Γ_H (ns⁻¹)	Γ_D (ns⁻¹)	Γ_S (ns⁻¹)	$N_{max}^{*}$ (cm⁻³)	Gain (cm⁻¹)
Ar ix	2 × 10¹⁷	165	143	170	1.3 × 10¹⁵	34
47.8 nm	1 × 10¹⁷	161	143	85.4	5.5 × 10¹⁴	17
Kr ix	1 × 10¹⁷	122	115	164	1.0 × 10¹⁵	94
31.9 nm	2 × 10¹⁶	110	115	32.8	5.5 × 10¹³	7.5
Xe ix	1 × 10¹⁷	136	56	240	1.1 × 10¹⁵	107
41.0 nm	2 × 10¹⁶	104	56	48	9.0 × 10¹³	20

Ion	Transition	R (cm³/s)
Ar ix	¹S₀ 2p⁶ → ¹P₁ 2p⁵ 3s	2.3 × 10⁻¹⁰
	¹S₀ 2p⁶ → ¹S₀ 2p⁵ 3p	1.6 × 10⁻⁹
	¹S₀ 2p⁵3p → ¹P₁ 2p⁵ 3s	5.9 × 10⁻⁸
	¹S₀ 2p⁵3p → ¹P₁ 2p⁵ 3d	1.1 × 10⁻⁷
Kr ix	¹S₀ 3d¹⁰ → ¹P₁ 3d⁹ 4p	7.3 × 10⁻⁹
	¹S₀ 3d¹⁰ → ¹S₀ 3d⁹ 4d	9.9 × 10⁻⁹
	¹S₀ 3d⁹ 4d → ¹P₁ 3d⁹ 4p	7.9 × 10⁻⁸
	¹S₀ 3d⁹ 4d → ¹P₁ 3d⁹ 4f	1.9 × 10⁻⁷
Xe ix	¹S₀ 4d¹⁰ → ¹P₁ 4d⁹ 5p	1.3 × 10⁻⁸
	¹S₀ 4d¹⁰ → ¹S₀ 4d⁹ 5d	1.5 × 10⁻⁸
	¹S₀ 4d⁹ 5d → ¹P₁ 4d⁹ 5p	1.7 × 10⁻⁷
	¹S₀ 4d⁹ 5d → ¹P₁ 4d⁹ 4f	3.2 × 10⁻⁷
	¹S₀ 4d⁹ 5d → ¹P₁ 4d⁹ 5f	1.7 × 10⁻⁷

Laser Line	Density (cm⁻³)	Γ_H (ns⁻¹)	Γ_D (ns⁻¹)	Γ_S (ns⁻¹)	$N_{max}^{*}$ (cm⁻³)	Gain (cm⁻¹)
Ar ix	2 × 10¹⁷	165	143	170	1.3 × 10¹⁵	34
47.8 nm	1 × 10¹⁷	161	143	85.4	5.5 × 10¹⁴	17
Kr ix	1 × 10¹⁷	122	115	164	1.0 × 10¹⁵	94
31.9 nm	2 × 10¹⁶	110	115	32.8	5.5 × 10¹³	7.5
Xe ix	1 × 10¹⁷	136	56	240	1.1 × 10¹⁵	107
41.0 nm	2 × 10¹⁶	104	56	48	9.0 × 10¹³	20

Abstract

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Equations (1)

Optics Letters