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H. Lotsch (1965)
The field distributions in a Fabry-Perot interferometer with a very small Fresnel numberPhysica D: Nonlinear Phenomena, 31
P. Kisliuk, D. Walsh (1962)
The Interference between Beams from the Opposite Ends of a Ruby Optical MaserApplied Optics, 1
A. Korpel, J. Free (1964)
Competition between internal and external modes of a ruby laser, 52
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Coherence, Narrowing, Directionality, and Relaxation Oscillations in the Light Emission from RubyPhysical Review Letters, 5
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Amplitude and Frequency Variations in Ruby Optical MasersOptical Masers
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Change of optical path length in laser rods within the pumping periodIEEE Journal of Quantum Electronics, 1
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Optical Quality and Radiation Patterns of Ruby LasersApplied Optics, 2
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Characteristics of Ruby Laser Modes in a Nominally Plane Parallel Resonator
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A Study of Transverse Modes of Ruby Lasers Using Beat-Frequency Detection and Fast PhotographyApplied Optics, 3
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H. Lotsch (1965)
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A MODIFIED FABRY-PEROT INTERFEROMETER AS A DISCRIMINATION FILTER AND A MODULATOR FOR LONGITUDINAL MODES
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Filamentary Standing‐Wave Pattern in a Solid‐State MaserJournal of Applied Physics, 33
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Resonant Waves in a Fabry-Perot InterferometerJapanese Journal of Applied Physics, 4
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H. Lotsch (1964)
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SummaryMany solid-state lasers show features which have not been predicted by the prevalent laser theories. The laser action in a ruby crystal usually produces a spotty pattern on the end faces, and the output exhibits relaxation oscillations in a random manner. These properties are closely connected with one another through the filamentary nature of the laser action. The theory for a Fabry-Perot interferometer with rectangular mirrors and a large Fresnel number is outlined. It is demonstrated that the observable single mode patterns are in the form of parabolic cylinder functions (Gaussian distribution of intensity for lowest-order eigenmode) and not of cosine and sine functions as is widely believed. This theoretical result predicts the filamentary nature of the laser action between plane parallel end faces and suggests that the irregular spiking behavior of a solid-state laser may be considered a superposition of outputs from several filaments. If the laser is operated only slightly above threshold the relaxation oscillations die away faster than predicted by the linearized Statz and deMars equations.
Applied Scientific Research, Section B – Springer Journals
Published: Oct 1, 1965
Keywords: Pump Power; Ruby; Laser Action; Relaxation Oscillation; Ruby Laser
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