Vibrational Energy Level Population in Optically Pumped AgCl Vapor

L. Allen; D. G. C. Jones

doi:10.1364/AO.6.001545

Applied Optics
Vol. 6,
Issue 9,
pp. 1545-1548
(1967)
•https://doi.org/10.1364/AO.6.001545

Vibrational Energy Level Population in Optically Pumped AgCl Vapor

L. Allen and D. G. C. Jones

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L. Allen and D. G. C. Jones, "Vibrational Energy Level Population in Optically Pumped AgCl Vapor," Appl. Opt. 6, 1545-1548 (1967)

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Abstract

A process is discussed which could lead to laser oscillation in the uv, employing vibrational energy levels in different electronic states of a diatomic molecule. A pulse from a Lyman discharge tube is passed through AgCl vapor. Absorption and subsequent fluorescence occur and analysis of the resulting output pulse, together with previously measured values of the lifetimes involved, enable the populations of eight vibrational energy levels to be computed. No inversion is found to occur between the two electronic states but inversions 5 × 10⁹ mol/cm³ are found to occur between pairs of vibrational levels in the same electronic state.

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Band	τ(μsec)
(0,0)	0.695
(1,1)	1.83
(2,1)	1.93
(1,0)	4.45
(3,2)	1.83
(2,2)	4.22
(0,1)	1.66
(1,2)	1.23
(2,3)	0.91

T (μsec)	N_B	N_C	N_D	N_E	N_F
820°C, V.P. = 220 μ, 1.94 × 10¹⁵ mol/cm³
				× 10⁻⁵	× 10⁻⁵
0.8	0.92	0.35	0.53	0.56	0
1.7	0.84	0.32	0.35	1.1	0
2.5	0.83	0.24	0.30	1.6	0
3.3	0.75	0.33	0.29	0.57	0
4.2	0.53	0.46	0.34	0.02	0.14
5	0.56	0.47	0.27	0.02	0.18
5.9	0.57	0.45	0.17	1.8	0.07
805°C, V. P. = 160 μ, 1.43 × 10¹⁻⁵ mol/cm³
				× 10⁻⁵	× 10 ⁻⁵
0.8	0.9	0.25	0.57	1.2	0
1.7	0.75	0.43	0.22	2.0	0.3
2.5	0.65	0.45	0.15	1.8	0.63
3.3	0.68	0.56	0.14	0.63	0.82
4.2	0.54	0.52	0.11	0.16	0.87
5	0.56	0.57	0.08	0.13	0.67
5.9	0.62	0.53	0.08	0.4	0.64
790°C, V.P. = 115 μ, 1.04 × 10¹⁵ mol/cm³
				× 10⁻⁵	× 10⁻⁵
0.8	0.54	0.47	0.04	1.7	1.2
1.7	0.65	0.53	0.11	1.9	2.2
2.5	0.68	0.54	0.13	1.0	2.0
3.3	0.62	0.52	0.04	0.41	2.0
4.2	0.52	0.52	0.03	0.32	1.7
5	0.57	0.51	0.06	0.27	1.5
5.9	0.58	0.44	0.07	0.74	0.98
760°C, V.P. = 65 μ, 0.61 × 10¹⁵ mol/cm³
				× 10⁻⁵	× 10⁻⁵
0.8	0.76	1.0	0	2.0	2.6
1.7	0.37	0.35	0	2.2	2.8
2.5	0.28	0.24	0	5.5	1.9
3.3	0.41	0.29	0.06	0.73	3.1
4.2	0.41	0.35	0	0.33	3.8
5	0.45	0.52	0	0.01	1.7
5.9	0.38	0.44	0	0.32	0.32

Band	τ(μsec)
(0,0)	0.695
(1,1)	1.83
(2,1)	1.93
(1,0)	4.45
(3,2)	1.83
(2,2)	4.22
(0,1)	1.66
(1,2)	1.23
(2,3)	0.91

T (μsec)	N_B	N_C	N_D	N_E	N_F
820°C, V.P. = 220 μ, 1.94 × 10¹⁵ mol/cm³
				× 10⁻⁵	× 10⁻⁵
0.8	0.92	0.35	0.53	0.56	0
1.7	0.84	0.32	0.35	1.1	0
2.5	0.83	0.24	0.30	1.6	0
3.3	0.75	0.33	0.29	0.57	0
4.2	0.53	0.46	0.34	0.02	0.14
5	0.56	0.47	0.27	0.02	0.18
5.9	0.57	0.45	0.17	1.8	0.07
805°C, V. P. = 160 μ, 1.43 × 10¹⁻⁵ mol/cm³
				× 10⁻⁵	× 10 ⁻⁵
0.8	0.9	0.25	0.57	1.2	0
1.7	0.75	0.43	0.22	2.0	0.3
2.5	0.65	0.45	0.15	1.8	0.63
3.3	0.68	0.56	0.14	0.63	0.82
4.2	0.54	0.52	0.11	0.16	0.87
5	0.56	0.57	0.08	0.13	0.67
5.9	0.62	0.53	0.08	0.4	0.64
790°C, V.P. = 115 μ, 1.04 × 10¹⁵ mol/cm³
				× 10⁻⁵	× 10⁻⁵
0.8	0.54	0.47	0.04	1.7	1.2
1.7	0.65	0.53	0.11	1.9	2.2
2.5	0.68	0.54	0.13	1.0	2.0
3.3	0.62	0.52	0.04	0.41	2.0
4.2	0.52	0.52	0.03	0.32	1.7
5	0.57	0.51	0.06	0.27	1.5
5.9	0.58	0.44	0.07	0.74	0.98
760°C, V.P. = 65 μ, 0.61 × 10¹⁵ mol/cm³
				× 10⁻⁵	× 10⁻⁵
0.8	0.76	1.0	0	2.0	2.6
1.7	0.37	0.35	0	2.2	2.8
2.5	0.28	0.24	0	5.5	1.9
3.3	0.41	0.29	0.06	0.73	3.1
4.2	0.41	0.35	0	0.33	3.8
5	0.45	0.52	0	0.01	1.7
5.9	0.38	0.44	0	0.32	0.32

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Applied Optics