SURFACE-EMITTING LASER ARRAY DEVICE AND LASER IGNITION DEVICE

PROBLEM TO BE SOLVED: To prevent a failure due to electromigration.SOLUTION: A surface-emitting laser array device includes: a light-emitting region 103 in which a plurality of surface-emitting laser elements 115 are formed; an upper electrode 111 for supplying a current from the outer periphery of...

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Bibliographic Details
Main Authors NARUMI SHINYA, HINO TAKESHI, JIKUTANI NAOTO
Format Patent
LanguageEnglish
Japanese
Published 29.06.2017
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:PROBLEM TO BE SOLVED: To prevent a failure due to electromigration.SOLUTION: A surface-emitting laser array device includes: a light-emitting region 103 in which a plurality of surface-emitting laser elements 115 are formed; an upper electrode 111 for supplying a current from the outer periphery of the light-emitting region 103 to the surface-emitting laser elements 115; and bonding wires 251 connected to the upper electrode 111 in a region outside the light-emitting region 103. The total cross-sectional area of the bonding wires 251 is larger than the cross-sectional area of the upper electrode 111. A current density in the upper electrode 111 is smaller than 5×10A/cm.SELECTED DRAWING: Figure 7 【課題】エレクトロマイグレーションによる不具合を防止する。【解決手段】面発光レーザアレイ装置は、複数の面発光レーザ素子１１５が形成された発光領域１０３と、発光領域１０３の外周部から面発光レーザ素子１１５に電流を供給する上部電極１１１と、発光領域１０３の外側の領域において上部電極１１１と接続するボンディングワイヤ２５１とを備え、ボンディングワイヤ２５１の総断面積は、上部電極１１１の断面積より大きい。上部電極１１１における電流密度は、５×１０５Ａ／ｃｍ２より小さい。【選択図】図７
Bibliography:Application Number: JP20150249922