Possible high energy laser at 1.27 μm

R. L. Kerber; A. K. MacKnight; R. D. Franklin

doi:10.1364/AO.17.003276

Applied Optics
Vol. 17,
Issue 20,
pp. 3276-3283
(1978)
•https://doi.org/10.1364/AO.17.003276

Possible high energy laser at 1.27 μm

R. L. Kerber, A. K. MacKnight, and R. D. Franklin

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R. L. Kerber, A. K. MacKnight, and R. D. Franklin, "Possible high energy laser at 1.27 μm," Appl. Opt. 17, 3276-3283 (1978)

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Abstract

Preliminary theoretical and experimental evidence is presented that suggests the potential of lasing from the strongly forbidden $O_{2} (Δ_{g}) \to C_{2} (\sum_{g}^{-})$ transition of molecular oxygen. A rate equation model is developed which predicts pulse energies up to several hundred joules/liter atmosphere for typical mixtures of 10₃:2N₂ activated by uv photolysis in less than 10 μsec. Preliminary results from a flash photolysis laser apparatus demonstrating 1.27-μm lasing are presented. Results from a computer analysis assessing the possibility of using this system as a multipass amplifier are also given.

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Reaction no.	Reaction	Rate coefficient^a	Reference
1a	O(¹D) + O₃ → 2O₂	(1.5*–2.3) × 10⁻¹⁰	4,5
1b	→ O₂ + 2O	(1.2–1.5*) × 10⁻¹⁰	4,5
2a	O(¹D) + O₂ → O + O₂	(1.3–3.0*) × 10⁻¹¹	4,6,7
2b	→ O + O₂(¹Σ)	(1.3–3.0*) × 10⁻¹¹	4,6,7
2c	→ O + O₂(¹Δ)	neglect	7
3	O₂(¹Σ) + O₃ → 2O₂ + O	7.0 × 10⁻¹²	8
4	O₂(¹Δ) + O₃ → 2O₂ + O	3.5 × 10⁻¹⁵	9
5	2O₂(¹Δ) → O₂(¹Σ) + O₂	2.0 × 10⁻¹⁷	2
6	O + O₃ → 2O₂	1.0 × 10⁻¹⁴	10
7a	O(¹D) + M → O + M	3.4 × 10⁻¹¹ M = N₂	8
7b		1.5 × 10⁻¹⁵ M = He	5
		See (2a) M = O₂
8a	O₂(¹Σ) + M → O₂ + M	2.2 × 10⁻¹⁵ M = N₂	11
8b		1.0 × 10⁻¹⁷ M = He	11
8c		4.8 × 10⁻¹⁷ M = O₂	12
8d		4.8 × 10⁻¹² M = H₂O	2
9	O₂(¹Δ) + M → O₂ + M	4.2 × 10⁻²⁰ M = N₂	13
9b		<10⁻²⁰ M = He	11
9c		2 × 10⁻¹⁸ M = O₂	13
9d		4 × 10⁻¹⁸ M = H₂O	11
10a	O + O + M → O₂ + M	1.5 × 10⁻³⁴ M = O	14
10b		2.9 × 10⁻³³ M = N₂	15
10c		9 × 10⁻³⁴ M = He	15
11a	O + O₂ + M → O₃ + M	6 × 10⁻³³ M = H₂O	16
11b		6.5 × 10⁻³⁴ M = O₂	16
11c		4 × 10⁻³⁴ M = He	16
11d		5.9 × 10⁻³⁴ M = N₂	16
12	O(¹D) + H₂O → 2OH	3.0 × 10⁻¹⁰	17
13	OH + O₃ → O₂ + HO₂	1.5 × 10⁻¹³	18
14	2OH → H₂O + O	3.0 × 10⁻¹²	18
15	2HO₂ → H₂O₂ + O₂	3.0 × 10⁻¹²	18
16	OH + HO₂ → O₂ + H₂O	1.0 × 10⁻¹¹	19
17	OH + O → O₂ + H	5.0 × 10⁻¹¹	19
18	HO₂ + O → OH + O₂	2.0 × 10⁻¹¹	19

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Applied Optics