METHOD FOR ASCERTAINING MODE HOPPING FREE TUNING OF RESONANCE FREQUENCY AND THE Q-VALUE OF AN OPTICAL RESONATOR AND A DEVICE FOR CARRYING OUT THE METHOD

PCT No. PCT/SE90/00573 Sec. 371 Date Apr. 21, 1992 Sec. 102(e) Date Apr. 21, 1992 PCT Filed Sep. 7, 1990 PCT Pub. No. WO91/03848 PCT Pub. Date Mar. 21, 1991.Method and apparatus to ensure tuning without mode hopping of the resonator frequency and tuning of the Q-value of an optical resonator of the...

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Bibliographic Details
Main Authors VILHELMSSON, KENNET JAN-AKE, NILSSON, OLLE BJOERN
Format Patent
LanguageEnglish
French
German
Published 02.05.2002
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
DEVICES USING STIMULATED EMISSION
ELECTRICITY
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:PCT No. PCT/SE90/00573 Sec. 371 Date Apr. 21, 1992 Sec. 102(e) Date Apr. 21, 1992 PCT Filed Sep. 7, 1990 PCT Pub. No. WO91/03848 PCT Pub. Date Mar. 21, 1991.Method and apparatus to ensure tuning without mode hopping of the resonator frequency and tuning of the Q-value of an optical resonator of the type comprising a partially reflecting resonator mirror (2) and a movable reflecting optical grating, with grooves (GR) parallel to the resonator mirror, intended to function as a wavelength selective reflector and which may comprise optical elements between the mirror and the grating, said optical elements being intended for collimation, amplification (4) and filtering of the radiation in the resonator, so that when changing the resonance wavelength ( lambda ) of the resonator or its Q-value, the grating is moved in such a way that a line (C) on the grating which is defined at a tuned initial position of the resonator by the intersection of the plane of grating grooves (M) and the virtual mirror plane (5) of the resonator mirror, remains at a distance less than lambda /4 from the virtual mirror plane, which as a result of chromatic dispersion in the resonator media slides in distance to the fixed mirror with said resonator wavelength during the movement.
Bibliography:Application Number: EP19900913566