Amplified spontaneous emission in narrow-band pulsed dye laser oscillators--theory and experiment

Journal Article · Fri Nov 01 04:00:00 EST 1985 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1985.1072582· OSTI ID:5888030

Nair, L G; Dasgupta, K

We have investigated the effect of amplified spontaneous emission (ASE) on the spectral and temporal characteristics of narrowband pulsed dye laser oscillators. The space and time dependent rate equations for the molecular populations and photon fluxes have been solved numberically to study the dependence of ASE on various laser parameters and the effects of ASE on the spectral and temporal profile of the dye laser output. To account for the diffraction losses present in a real dye laser oscillator, appropriate feedback factors for the laser and ASE photon fluxes were introduced into the boundary conditions for the oscillator. These theoretical results have been substantiated by experimental measurements of ASE in a narrow-band pulsed dye laser oscillator. We show that a considerable reduction of ASE in a grazing incidence grating dye laser oscillator can be obtained by appropriately shaping the pump pulse. Oscillations observed in the temporal output of pulsed dye lasers are also discussed.

• Research Organization: Laser Division, Bhabha Atomic Research Centre, Trombay, Bombay
• OSTI ID: 5888030
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-21:11; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFICATION
BEAM PROFILES
COHERENT SCATTERING
DIFFRACTION
DYE LASERS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EMISSION
EMISSION SPECTRA
EQUATIONS
EQUIPMENT
FEEDBACK
KINETIC EQUATIONS
LASER RADIATION
LASERS
LIQUID LASERS
OSCILLATIONS
OSCILLATORS
RADIATIONS
SCATTERING
SPECTRA
TIMING PROPERTIES