SURFACE-EMITTING LASER, LASER DEVICE, DETECTION DEVICE, MOBILE OBJECT, AND METHOD FOR DRIVING SURFACE-EMITTING LASER

A surface-emitting laser (100) includes an active layer (130); multiple reflectors (120, 140) sandwiching the active layer (130); and an electrode pair (160, 170) connected to a power supply, through which a current is injected into the active layer (130). The surface-emitting laser (100) emits at l...

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Bibliographic Details
Main Authors UENO, Naofumi, MAITA, Yutaka, HARASAKA, Kazuhiro, JIKUTANI, Naoto, SUZUKI, Ryoichiro
Format Patent
LanguageEnglish
French
German
Published 24.04.2024
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:A surface-emitting laser (100) includes an active layer (130); multiple reflectors (120, 140) sandwiching the active layer (130); and an electrode pair (160, 170) connected to a power supply, through which a current is injected into the active layer (130). The surface-emitting laser (100) emits at least one laser beam during a current injection period when the current injected into the active layer through the electrode pair during the current injection period is a first current and emits at least one laser beam during a current decrease period when the current injected into the active layer through the electrode pair during the current injection period is a second current exceeding the first current. The current decrease period is after the current injection period. The current injected into the active layer during the current decrease period is lower than the current injected into the active layer during the current injection period.
Bibliography:Application Number: EP20230202977