Effect of excited-state absorption at signal wavelength in pulsed-dye-laser amplifiers

Journal Article · Mon Jan 01 04:00:00 EST 1990 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/3.44932· OSTI ID:6972552

Dasgupta, K ^[1]; Nair, L G ^[2]

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1. Multi Disciplinary Research Section, Modular Labs., Physics Group, Bhabha Atomic Research Center, Bombay 400 085 (IN)
2. Laser Div., Modular Labs, Physics Group, Bhabha Atomic Research Center, Bombay 400 085 (IN)

The effect of excited-state absorption (ESA) at the laser wavelength in transversely-pumped pulsed-dye-laser amplifiers is theoretically examined. Assuming steady-state conditions, it is shown that ESA along with ground-state absorption introduces a nonlinear loss term in the amplifier equation. An improved expression for the saturated gain is obtained, and, it is shown that the amplifier extraction efficiency does not saturate with increase in dye-laser input power, but, shows a maximum and then decreases. These theoretical results are compared with experimental measurements in copper-vapor laser pumped dye-laser amplifiers.

• OSTI ID: 6972552
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA) Vol. 26:1; ISSN 0018-9197; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
AMPLIFICATION
AMPLIFIERS
COMPARATIVE EVALUATIONS
COPPER
DATA
DYE LASERS
ELECTRONIC EQUIPMENT
ELEMENTS
ENERGY LEVELS
EQUIPMENT
EXCITED STATES
EXPERIMENTAL DATA
FLUIDS
GAIN
GASES
INFORMATION
LASERS
LIQUID LASERS
METALS
NONLINEAR PROBLEMS
NUMERICAL DATA
PULSE AMPLIFIERS
SPECTRA
STEADY-STATE CONDITIONS
THEORETICAL DATA
TRANSITION ELEMENTS
VAPORS
WAVELENGTHS