公开(公告)号：US5949578A

公开(公告)日：1999-09-07

申请号：US26071

申请日：1998-02-19

Applicant: Bernard Sermage

Inventor： Bernard Sermage

IPC: G02B5/18 ,  G01J3/24 ,  G02B27/42

CPC classification number: G02B5/1847 ,  G02B5/1861

Abstract: A reflective grating for the optical diffraction of light rays comprises k juxtaposed, grooved, plane sub-gratings, the planes of the sub-gratings being offset in terms of height with respect to one another along the normal to the plane of the reflective surface of the grooves, enabling the difference in optical path of the grating to be reduced to the difference in optical path between the two ends of a sub-grating.

Abstract translation: 用于光线的光学衍射的反射光栅包括k并置的，带槽的平面子光栅，子光栅的平面相对于彼此沿着与反射表面的平面的法线相对于彼此偏移 能够使光栅的光路的差异减小到子光栅的两端之间的光路的差。

公开(公告)号：US4779280A

公开(公告)日：1988-10-18

申请号：US867933

申请日：1986-05-23

Applicant: Bernard Sermage ,  Francoise Brillouet

Inventor： Bernard Sermage ,  Francoise Brillouet

IPC: H01S5/10 ,  H01S5/20 ,  H01S3/19

CPC classification number: H01S5/20 ,  H01S5/1078 ,  H01S5/2004

Abstract: Double heterostructure semiconductor laser in which the contact layer is transparent to the spontaneous radiation emitted by the active layer. The upwardly directed light is then reflected by the metal layer and returned to the active layer.

Abstract translation: 双异质结构半导体激光器，其中接触层对于由有源层发射的自发辐射是透明的。 然后向上指向的光被金属层反射并返回到有源层。