Ragip Pala

US Patent:

20230016681, Jan 19, 2023

Filed:

Sep 19, 2022

Appl. No.:

17/948026

Inventors:

- Gyeonggi-do, KR
- Pasadena CA, US
Harry ATWATER - Pasadena CA, US
Ragip PALA - Pasadena CA, US
Byunghoon NA - Suwon-si, KR
Seunghoon HAN - Seoul, KR

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

G01S 17/02
G02F 1/017
G01S 7/481
G02F 1/21
G02F 1/29

Abstract:

Provided are an optical modulating device and a system including the optical modulating device. The optical modulating device includes a substrate, and a phase modulator formed on the substrate and including a Fabry-Perot cavity. The Fabry-Perot cavity of the phase modulator includes a first reflective layer, a second reflective layer, and a tunable core formed between the first reflective layer and the second reflective layer, wherein the tunable core is formed of a semiconductor material and is configured to modulate a phase of light corresponding to modulation of a refractive index of the tunable core according to electrical control.

US Patent:

20200284904, Sep 10, 2020

Filed:

May 27, 2020

Appl. No.:

16/884850

Inventors:

- Suwon-si, KR
- Pasadena CA, US
Harry ATWATER - Pasadena CA, US
Ragip PALA - Pasadena CA, US
Byunghoon NA - Suwon-si, KR
Seunghoon HAN - Seoul, KR

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

G01S 17/02
G02F 1/017
G01S 7/481
G02F 1/21
G02F 1/29

Abstract:

Provided are an optical modulating device and a system including the optical modulating device. The optical modulating device includes a substrate, and a phase modulator formed on the substrate and including a Fabry-Perot cavity. The Fabry-Perot cavity of the phase modulator includes a first reflective layer, a second reflective layer, and a tunable core formed between the first reflective layer and the second reflective layer, wherein the tunable core is formed of a semiconductor material and is configured to modulate a phase of light corresponding to modulation of a refractive index of the tunable core according to electrical control.

US Patent:

20200280174, Sep 3, 2020

Filed:

Feb 28, 2020

Appl. No.:

16/804442

Inventors:

- Suwon-si, KR
- Pasadena CA, US
Ghazaleh KAFAIE SHIRMANESH - Pasadena CA, US
Harry ATWATER - Pasadena CA, US
Pin Chieh WU - Pasadena CA, US
Ragip PALA - Pleasanton CA, US

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

H01S 5/187
H01S 5/183
H01S 5/22

Abstract:

A light modulation element according to example embodiments includes a substrate; a first lower DBR layer on the substrate including a first material layer alternately stacked with a second material layer having a different refractive index from the first material layer; a second lower DBR layer on the first lower DBR layer with a surface area less than the first lower DBR layer and including a third material layer alternately stacked with a fourth material layer having a different refractive index from the third material layer; an active layer on the second lower DBR layer, including a semiconductor material having a multi-quantum well structure and having a refractive index that varies according to an applied voltage; and an upper DBR layer on the active layer including a fifth material layer alternately stacked with a sixth material layer having a different refractive index from the fifth material layer.

US Patent:

20190129206, May 2, 2019

Filed:

Oct 25, 2018

Appl. No.:

16/170573

Inventors:

- Suwon-si, KR
- Pasadena CA, US
Yu-Jung LU - Pasadena CA, US
Ghazaleh KAFAIE SHIRMANESH - Pasadena CA, US
Harry ATWATER - Pasadena CA, US
Ragip PALA - Pasadena CA, US
Chanwook BAIK - Yongin-si, KR

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

G02F 1/017
B82Y 20/00

Abstract:

An optical modulating device may include a plurality of quantum dot (QD)-containing layers having QDs and a plurality of refractive index change layers. The QD-containing layers may be disposed between the refractive index change layers, respectively. The optical modulating device may be configured to modulate light-emission characteristics of the plurality of QD-containing layers. At least two of the QD-containing layers may have different central emission wavelengths. At least two of the plurality of refractive index change layers may include different materials or have different carrier densities.

US Patent:

20190131491, May 2, 2019

Filed:

Oct 30, 2018

Appl. No.:

16/175113

Inventors:

- Suwong-Si, KR
- Pasadena CA, US
Yu-Jung LU - Pasadena CA, US
Ghazaleh KAFAIE SHIRMANESH - Pasadena CA, US
Harry A. ATWATER - Pasadena CA, US
Ragip A. PALA - Pasadena CA, US
Chan-Wook BAIK - Yongin-si, KR

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

H01L 33/06
H01L 33/10
H01L 33/60

Abstract:

Provided are light emission devices including an output coupler and optical apparatuses having the same. The light emission device may include a QD layer containing quantum dots and a nano-antenna structure including an output coupler configured to control an output characteristic of light emitted from the QD layer. The output coupler may be configured to output an emission wavelength of the QD layer. The nano-antenna structure may include one of a metallic antenna, a dielectric antenna, and a slit-containing structure, or may have a multi-patch antenna structure or a fishbone antenna structure.

US Patent:

20180292681, Oct 11, 2018

Filed:

Jun 7, 2018

Appl. No.:

16/002473

Inventors:

- Suwon-si, KR
- Pasadena CA, US
Harry ATWATER - Pasadena CA, US
Ghazaleh KAFAIE - Pasadena CA, US
Ragip PALA - Pasadena CA, US
Yu-Jung LU - Pasadena CA, US
Ho Wai LEE - Pasadena CA, US
Yao-Wei HUANG - Pasadena CA, US
Krishnan THYAGARAJAN - Pasadena CA, US

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

G02F 1/01
H01L 33/44
G02B 5/00
H01L 33/06

Abstract:

An optical modulating device includes a permittivity change layer having a variable permittivity, a dielectric layer disposed on the permittivity change layer, a nanoantenna disposed on the dielectric layer, and a light-emitting structure disposed adjacent to the permittivity change layer.

US Patent:

20180196138, Jul 12, 2018

Filed:

Jan 10, 2018

Appl. No.:

15/867015

Inventors:

- Suwon-si, KR
- Pasadena CA, US
Harry ATWATER - Pasadena CA, US
Ragip PALA - Pasadena CA, US
Byunghoon NA - Suwon-si, KR
Seunghoon HAN - Seoul, KR

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

G01S 17/02
G02F 1/21
G02F 1/017
G01S 7/481
G02F 1/015

Abstract:

Provided are an optical modulating device and a system including the optical modulating device. The optical modulating device includes a substrate, and a phase modulator formed on the substrate and including a Fabry-Perot cavity. The Fabry-Perot cavity of the phase modulator includes a first reflective layer, a second reflective layer, and a tunable core formed between the first reflective layer and the second reflective layer, wherein the tunable core is formed of a semiconductor material and is configured to modulate a phase of light corresponding to modulation of a refractive index of the tunable core according to electrical control.

US Patent:

20170031183, Feb 2, 2017

Filed:

Jul 20, 2016

Appl. No.:

15/214919

Inventors:

- Suwon-si, KR
- Pasadena CA, US
Harry ATWATER - Pasadena CA, US
Ghazaleh KAFAIE - Pasadena CA, US
Ragip PALA - Pasadena CA, US
Yu-Jung LU - Pasadena CA, US
Ho Wai LEE - Pasadena CA, US
Yao-Wei HUANG - Pasadena CA, US
Krishnan THYAGARAJAN - Pasadena CA, US

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

G02F 1/01
G02B 5/00
H01L 33/06

Abstract:

An optical modulating device includes a permittivity change layer having a variable permittivity, a dielectric layer disposed on the permittivity change layer, a nanoantenna disposed on the dielectric layer, and a light-emitting structure disposed adjacent to the permittivity change layer.