公开(公告)号：US20150131684A1

公开(公告)日：2015-05-14

申请号：US14556933

申请日：2014-12-01

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Tomofumi KISE ,  Suguru IMAI ,  Masaki FUNABASHI ,  Hitoshi SHIMIZU

IPC: H01S5/042 ,  H01S5/42

CPC classification number: H01S5/0427 ,  H01S5/0425 ,  H01S5/06226 ,  H01S5/0651 ,  H01S5/18311 ,  H01S5/18344 ,  H01S5/18369 ,  H01S5/18394 ,  H01S5/42 ,  H01S5/423

Abstract: A surface-emitting laser apparatus includes: a surface-emitting laser element; and a driving apparatus supplying a modulation-driving current to the surface-emitting laser element. The modulation-driving current is intensity-modulated to vary across a value of a bias current. The number of lateral modes of laser oscillation of the surface-emitting laser element changes from one to three at maximum in accordance with a value of the modulation-driving current. Among changing currents at which number of the lateral modes of the laser oscillation of the surface-emitting laser element changes, if a first changing current is defined at which the number of the lateral mode of the laser oscillation changes from one to two, the driving apparatus supplies the modulation-driving current to the surface-emitting laser element. The modulation-driving current is set so that a value of the first changing current is not between the bias current and a maximum value of the modulation-driving current.

Abstract translation: 表面发射激光装置包括：表面发射激光元件; 以及向表面发射激光元件提供调制驱动电流的驱动装置。 调制驱动电流被强度调制以在偏置电流的值上变化。 根据调制驱动电流的值，表面发射激光元件的激光振荡的横向模式的数量最多从一个变化到三个。 在表面发射激光器元件的激光振荡的横向模式的数量变化的变化电流中，如果定义激光振荡器的横向模式的数量从1变化到2的第一变化电流，则驱动 装置将调制驱动电流提供给表面发射激光元件。 调制驱动电流被设定为使得第一变化电流的值不在偏置电流和调制驱动电流的最大值之间。