公开(公告)号：US20240170918A1

公开(公告)日：2024-05-23

申请号：US18550592

申请日：2022-03-17

Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Heonsu JEON ,  Myeong Eun KIM

IPC: H01S5/11 ,  H01S5/042 ,  H01S5/22 ,  H01S5/343

CPC classification number: H01S5/11 ,  H01S5/04256 ,  H01S5/222 ,  H01S5/343

Abstract: An embodiment of the present invention provides a photonic crystal semiconductor laser device including an n-type clad layer formed on a first surface of an n-type first substrate, a guide layer formed on the n-type clad layer and including an active layer, a p-type clad layer formed on the guide layer, a p-type contact layer formed on the p-type clad layer, a p-type electrode layer formed on the p-type contact layer, and an n-type electrode layer contacting at least a portion of the first surface of the n-type first substrate or a second surface opposing the first surface, wherein holes penetrating the p-type contact layer, the p-type clad layer, the guide layer including the active layer, and the n-type clad layer are formed in the p-type contact layer, the p-type clad layer, the guide layer including the active layer, and the n-type clad layer, and the holes form a photonic crystal pattern.

公开(公告)号：US20200314983A1

公开(公告)日：2020-10-01

申请号：US16783888

申请日：2020-02-06

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Yeonsang PARK ,  Younggeun ROH ,  Heonsu JEON

IPC: H05B45/325 ,  H05B45/12 ,  H01S5/026

Abstract: An optical apparatus using multi-wavelength light, includes a substrate, and a light emitting array disposed on the substrate, and comprising a plurality of light emitting devices emitting a plurality of lights having different wavelengths. The optical apparatus includes a controller configured to control the light emitting array such that the plurality of lights are modulated differently and emitted simultaneously.

公开(公告)号：US20240388059A1

公开(公告)日：2024-11-21

申请号：US18662489

申请日：2024-05-13

Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Heonsu JEON ,  Myeongeun KIM

IPC: H01S5/11 ,  H01S5/02 ,  H01S5/042 ,  H01S5/20 ,  H01S5/32

Abstract: Provided is a photonic crystal laser device including a lower electrode layer on a top surface or bottom surface of a substrate, a guide layer on the lower electrode layer, an upper electrode layer on the guide layer, a lower clad layer between the lower electrode layer and the guide layer, and an upper clad layer between the guide layer and the upper electrode layer. The guide layer includes an active layer therein. A crystal hole is provided that penetrates the upper clad layer in a vertical direction and extends toward the guide layer. A lower end of the crystal hole is defined to be at a height higher than or at the same height as a top surface of the active layer.