Optomechanical doubly resonant 2D frequency doubling devices

Patent metadata

Field	Value
Publication number	US-10503047-B2
Application number	US-201615580537-A
Country	US
Kind code	B2
Filing date	Jun 9, 2016
Priority date	Jun 9, 2015
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

Optomechanical device for frequency doubling enhancement are described. The devices include a substrate through which light of a first wavelength is introduced, a first reflector mirror, a conductive layer disposed on the first reflector mirror, and a second mirror spaced apart from the conductive layer, thereby forming an optical cavity between the second mirror and the conductive layer. The devices also include a power source coupled to the second mirror and the conductive layer and a monolayer of non-linear optical material disposed within the optical cavity, the monolayer being configured to produce light of a second wavelength upon interaction with the light of the first wavelength. The second mirror is deformable upon introduction of voltage from the power source and deformation of the second mirror changes a length of the optical cavity, thereby enhancing a power output of the light of the second wavelength produced by the monolayer.

First claim

What is claimed:

1. An optomechanical device for frequency doubling enhancement, comprising:
a substrate through which light of a first wavelength is introduced;
a first reflector mirror positioned on the substrate;
a conductive layer disposed on the first reflector mirror;
a second mirror spaced apart from the conductive layer, thereby forming an optical cavity between the second mirror and the conductive layer;
a power source coupled to the second mirror and the conductive layer; and
a monolayer of non-linear optical material disposed within the optical cavity, the monolayer configured to produce light of a second wavelength upon interaction with the light of the first wavelength,
wherein the second mirror is deformable upon introduction of voltage from the power source to the second mirror, the voltage introduced to the second mirror effecting deformation of the second mirror; and
wherein the deformation of the second mirror changes a length of the optical cavity, thereby enhancing a power output of the light of the second wavelength produced by the monolayer.

2. The device of claim 1 , wherein the monolayer comprises molybdenum disulfide (MoS2).

3. The device of claim 1 , wherein the second mirror comprises silver.

4. The device of claim 1 , wherein the power output of the light of the second wavelength is enhanced by at least 3,000 times upon deformation of the second mirror.

5. The device of claim 1 , wherein the first reflector mirror is a dielectric distributed Bragg reflector mirror.

6. The device of claim 1 , wherein the conductive layer comprises indium tin oxide (ITO).

7. The device of claim 1 , further comprising at least one layer of photoresist disposed between the conductive layer and the second mirror, the layer of photoresist spacing the second mirror from the conductive layer.

8. The device of claim 7 , wherein the layer of photoresist comprises SU-8.

9. A method for optomechanically enhancing frequency doubled light, comprising:
introducing light of a first wavelength through a substrate and through a first reflector mirror;
passing the light of the first wavelength through a conductive layer and into an optical cavity formed by a space between the conductive layer and a second deformable mirror, the second deformable mirror being deformable with introduction of a voltage to the second deformable mirror;
reflecting the light of the first wavelength in the optical cavity to a monolayer of non-linear optical material disposed within the cavity, thereby producing light of a second wavelength;
deforming the second mirror by applying a voltage to the second mirror, thereby effecting deformation of the second mirror so as to change a length of the optical cavity, thereby enhancing a power output of the light of the second wavelength; and
outputting the light of the second wavelength.

10. The method of claim 9 , wherein the light of the second wavelength is of a frequency that is about double that of a frequency of the light of the first wavelength.

11. The method of claim 9 , wherein the monolayer comprises MoS2.

12. The method of claim 9 , wherein the second deformable mirror comprises silver.

13. The method of claim 9 , wherein the deforming step comprises applying a voltage of about 20 volts to the second mirror.

14. The method of claim 9 , wherein the power output of the light of the second wavelength is enhanced by at least 3,000 times.

Assignees

• Univ Pennsylvania

Inventors

• Cubukcu Ertugrul
• Yi Fei

Classifications

• G02F1/3501 Primary

  Constructional details or arrangements of non-linear optical devices, e.g. shape of non-linear crystals · CPC title

• G02F1/355

  characterised by the materials used · CPC title

• G02B26/002

  the movement or the deformation controlling the frequency of light, e.g. by Doppler effect · CPC title

• G02F1/3613

  containing Sulfur · CPC title

• G02F1/37

  for second-harmonic generation {(G02F1/3532 takes precedence)} · CPC title