OPEN TYPE RESONATOR FOR LASER

PURPOSE:To obtain an open type Fabry-Perot resonator of mirror structure without requiring precise parallelism with large gain and small diffraction loss by disposing oppositely conical mirrors having 90 deg. of a vertex angle as mirrors of the resonator. CONSTITUTION:In conical mirrors 1 having 90...

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Bibliographic Details
Main Author SAKAMI TOSHIYUKI
Format Patent
LanguageEnglish
Published 15.06.1987
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:PURPOSE:To obtain an open type Fabry-Perot resonator of mirror structure without requiring precise parallelism with large gain and small diffraction loss by disposing oppositely conical mirrors having 90 deg. of a vertex angle as mirrors of the resonator. CONSTITUTION:In conical mirrors 1 having 90 deg. of a vertex angle a reflected wave become parallel to an incident wave, and there is no phase displacement due to an optical passage difference. Accordingly, when the mirrors 1 are used oppositely as a reflecting mirror, a precise surface matching is not necessary, the spread of the light is larger than with concave-convex type, and the loss is smaller than a convex-convex type in an open type laser resonator 2.
Bibliography:Application Number: JP19850272898