Effect of the pump rate and loss perturbations on the lasing dynamics of a Fabry-Perot laser

Journal Article · Sat Nov 13 00:00:00 EST 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N09ABEH014358· OSTI ID:21471142

Kumar, N ^[1]; Ledenev, V I ^[2]

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1. Indira Gandhi Centre for Atomic Reseach, Kalpakkam, Tamilnadu (India)
2. Institute on Laser and Information Technologies, Russian Academy of Sciences, Shatura, Moscow Region (Russian Federation)

Transition from generation of the fundamental mode to generation of the fundamental and first modes is studied numerically under the action of nonstationary asymmetric perturbations of pump rate and loss distributions in the active medium layer. It is shown that emergence of perturbations directly leads to excitation of the first mode with significant amplitude. The regime of two-mode lasing in the presence of perturbations is shown to appear at a pump rate that is smaller than the threshold one for two-mode lasing in the absence of perturbations. It is found that the first-mode amplitude has a maximum at a frequency of intermode beatings of an unfilled Fabry-Perot resonator. It is also determined that emergence of nonstationary asymmetric perturbations leads to an increase in the average intensity of the fundamental mode. Various transition regimes to two-mode lasing are compared in different types and periods of perturbations. The operability of the scheme controlling the mode composition of laser radiation is considered. (lasers)

• OSTI ID: 21471142
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 40, Issue 9; Other Information: DOI: 10.1070/QE2010v040n09ABEH014358; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
ASYMMETRY
DISTURBANCES
EXCITATION
FABRY-PEROT INTERFEROMETER
HARMONIC GENERATION
LASER RADIATION
LASERS
LAYERS
PUMPING
RESONATORS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
FREQUENCY MIXING
INTERFEROMETERS
MEASURING INSTRUMENTS
RADIATIONS