Flashlamp pumped narrow-linewidth dispersive dye laser oscillators: very low amplified spontaneous emission levels and reduction of linewidth instabilities

F. J. Duarte; J. J. Ehrlich; W. E. Davenport; T. S. Taylor

doi:10.1364/AO.29.003176

Applied Optics
Vol. 29,
Issue 21,
pp. 3176-3179
(1990)
•https://doi.org/10.1364/AO.29.003176

Flashlamp pumped narrow-linewidth dispersive dye laser oscillators: very low amplified spontaneous emission levels and reduction of linewidth instabilities

F. J. Duarte, J. J. Ehrlich, W. E. Davenport, and T. S. Taylor

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F. J. Duarte, J. J. Ehrlich, W. E. Davenport, and T. S. Taylor, "Flashlamp pumped narrow-linewidth dispersive dye laser oscillators: very low amplified spontaneous emission levels and reduction of linewidth instabilities," Appl. Opt. 29, 3176-3179 (1990)

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Abstract

We report on optimized narrow linewidth (138-MHz ⩽ Δν ⩽ 360-MHz) flashlamp excited dispersive dye laser oscillators yielding extremely low amplified spontaneous emission levels in the 10⁻¹⁰ range. In addition, we specify thermal and dye flow conditions where linewidth instabilities, for double-longitudinal-mode oscillation, can be neutralized.

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Excitation	E₀ (mJ)	Δν (MHz)	(I_ASE/I_l)	{ρ_ASE/ρ_l}	C (M)	Ref.
Coaxial	2.6–4.2	⩽360	7 × 10⁻⁹	1.2 × 10⁻⁹	1.25 × 10⁻⁵
Coaxiala	~3	⩽360	6 × 10⁻¹⁰	1.7 × 10⁻¹⁰	1.25 × 10⁻⁵
Linear	3.6	⩽138	6 × 10⁻¹¹	2.9 × 10⁻¹¹	~1 × 10⁻⁵
Copper laser		60b	2 × 10⁻⁷		6 × 10⁻⁴	4
					Rhodamine 590
Copper laser		~400	5 × 10⁻⁷		2 × 10⁻³	5
					Rhodamine 590
Nitrogen laser		1610	7 × 10⁻⁶		~10⁻²	9
					C500

Oscillator	Δν_C (MHz)	Δν_M (MHz)	Δθ_M (mrad)	Δt (ns)	%T
Coaxial
MPL (+,+,+,−)	2157	⩽360	0.55	~200	63.11
HMPGI (+,+,−)	584				72.88
Linear
MPL (+,+,+,−)a	2157	⩽138	0.57	>1000	71.99

Excitation	E₀ (mJ)	Δν (MHz)	(I_ASE/I_l)	{ρ_ASE/ρ_l}	C (M)	Ref.
Coaxial	2.6–4.2	⩽360	7 × 10⁻⁹	1.2 × 10⁻⁹	1.25 × 10⁻⁵
Coaxiala	~3	⩽360	6 × 10⁻¹⁰	1.7 × 10⁻¹⁰	1.25 × 10⁻⁵
Linear	3.6	⩽138	6 × 10⁻¹¹	2.9 × 10⁻¹¹	~1 × 10⁻⁵
Copper laser		60b	2 × 10⁻⁷		6 × 10⁻⁴	4
					Rhodamine 590
Copper laser		~400	5 × 10⁻⁷		2 × 10⁻³	5
					Rhodamine 590
Nitrogen laser		1610	7 × 10⁻⁶		~10⁻²	9
					C500

Oscillator	Δν_C (MHz)	Δν_M (MHz)	Δθ_M (mrad)	Δt (ns)	%T
Coaxial
MPL (+,+,+,−)	2157	⩽360	0.55	~200	63.11
HMPGI (+,+,−)	584				72.88
Linear
MPL (+,+,+,−)a	2157	⩽138	0.57	>1000	71.99

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Applied Optics