Development of EM field in lasers with rotating mirror Q-switch

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/3.245573· OSTI ID:5647192

Marincek, M; Lukac, M ^[1]

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1. Iskra-Elektrooptika, Ljubljana (Slovenia) Jozef Stefan Inst., Ljubljan (Slovenia)

A fast-Fourier-transform (FFT) computational scheme based on a Fourier expansion technique is developed to calculate the development of an electromagnetic (EM) field from spontaneous noise inside a loaded rotating mirror Q-switched laser. A rate equations analysis is also carried out, using FFT calculated dependence of the diffraction loss on the fixed Q-switch mirror tilt angle. The computational results are compared with the output characteristics of an eye safe'' ([lambda] = 1.54 [mu]m) erbium glass laser. The experiments are in good qualitative and quantitative agreement with the predictions of the FFT model. The model reveals short-duration intense spatial regions, as well as two types of temporal modulations of the laser output pulses. The temporal modulations are attributed to the inhomogeneous development of the laser field in the longitudinal and transverse laser resonator direction.

• OSTI ID: 5647192
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States) Vol. 29:8; ISSN 0018-9197; ISSN IEJQA7
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
DATA
ELECTROMAGNETIC FIELDS
FOURIER ANALYSIS
INFORMATION
LASER MIRRORS
LASERS
MATHEMATICAL MODELS
MIRRORS
MODULATION
NOISE
NUMERICAL DATA
Q-SWITCHING
SAFETY
SOLID STATE LASERS
THEORETICAL DATA