公开(公告)号：US10352856B2

公开(公告)日：2019-07-16

申请号：US15378782

申请日：2016-12-14

Applicant: Massachusetts Institute of Technology

Inventor： Nicholas Rivera ,  Ido Kaminer ,  Bo Zhen ,  Marin Soljacic ,  John Joannopoulos

IPC: G01N21/64 ,  G01N21/63 ,  G01N21/17

Abstract: Ultra-thin conductors are employed to generate plasmon fields near the surface of the conductors. Emitters, such as atoms, molecules, quantum dots, or quantum wells, in the plasmon fields can emit and absorb light via transitions that are otherwise forbidden in the absence of the plasmon fields. Applications using these forbidden transitions include spectroscopy, organic light sources, and broadband light generation. For example, in a spectroscopic platform, an emitter is disposed in the plasmon fields to excite electronic transitions that are otherwise unexcitable. In organic light sources, plasmon fields quench excited triplet states, allowing fast singlet decay with the emission of light. In broadband light generation, strong two-plasmon spontaneous emission of emitters near ultrathin conductors is employed to produce a broad spectrum of light.

公开(公告)号：US10785858B2

公开(公告)日：2020-09-22

申请号：US15014401

申请日：2016-02-03

Applicant: Massachusetts Institute of Technology

Inventor： Ido Kaminer ,  Liang Jie Wong ,  Ognjen Ilic ,  Yichen Shen ,  John Joannopoulos ,  Marin Soljacic

IPC: H05G2/00

Abstract: An apparatus includes at least one conductive layer, an electromagnetic (EM) wave source, and an electron source. The conductive layer has a thickness less than 5 nm. The electromagnetic (EM) wave source is in electromagnetic communication with the at least one conductive layer and transmits a first EM wave at a first wavelength in the at least one conductive layer so as to generate a surface plasmon polariton (SPP) field near a surface of the at least one conductive layer. The electron source propagates an electron beam at least partially in the SPP field so as to generate a second EM wave at a second wavelength less than the first wavelength.

公开(公告)号：US08969831B2

公开(公告)日：2015-03-03

申请号：US13768725

申请日：2013-02-15

Applicant: Massachusetts Institute of Technology

Inventor： Ofer Shapira ,  Marin Soljacic ,  Bo Zhen ,  Song-Liang Chua ,  Jeongwon Lee ,  John Joannopoulos

IPC: G01N21/64 ,  H01L31/055 ,  H01S3/16 ,  G02B6/122 ,  G01N21/65 ,  H01L31/054 ,  B82Y20/00 ,  H01S3/094 ,  H01S3/02

CPC classification number: H01L31/055 ,  B82Y20/00 ,  G01N21/648 ,  G01N21/658 ,  G02B6/1225 ,  H01L31/054 ,  H01L31/0547 ,  H01S3/022 ,  H01S3/094034 ,  H01S3/168 ,  Y02E10/52 ,  Y10S977/759 ,  Y10S977/774

Abstract: Disclosed herein is a system for stimulating emission from at least one an emitter, such as a quantum dot or organic molecule, on the surface of a photonic crystal comprising a patterned dielectric substrate. Embodiments of this system include a laser or other source that illuminates the emitter and the photonic crystal, which is characterized by an energy band structure exhibiting a Fano resonance, from a first angle so as to stimulate the emission from the emitter at a second angle. The coupling between the photonic crystal and the emitter may result in spectral and angular enhancement of the emission through excitation and extraction enhancement. These enhancement mechanisms also reduce the emitter's lasing threshold. For instance, these enhancement mechanisms enable lasing of a 100 nm thick layer of diluted organic molecules solution with reduced threshold intensity. This reduction in lasing threshold enables more efficient organic light emitting devices and more sensitive molecular sensing.

Abstract translation: 本文公开了一种用于在包括图案化电介质基底的光子晶体的表面上刺激来自至少一个发射体（例如量子点或有机分子）的发射的系统。 该系统的实施例包括从第一角度照射发射体和光子晶体的激光器或其他源，其特征在于呈现出Fano共振的能带结构，以便以第二角度刺激发射器的发射。 光子晶体和发射极之间的耦合可以通过激发和提取增强而导致发射的光谱和角增强。 这些增强机制还会降低发射器的激光阈值。 例如，这些增强机制使得能够以降低的阈值强度激发100nm厚的稀释的有机分子溶液层。 激光阈值的这种降低使得更有效的有机发光器件和更敏感的分子感测。

公开(公告)号：US20240210576A1

公开(公告)日：2024-06-27

申请号：US18286808

申请日：2022-04-12

Applicant: Massachusetts Institute of Technology ,  Technion-Israel Institute Of Technology

Inventor： John Joannopoulos ,  Steven Johnson ,  Marin Soljacic ,  Steven Kooi ,  Justin Beroz ,  Ido Kaminer ,  Nicholas Rivera ,  Yi Yang ,  Charles Roques-Carmes ,  Ali Ghorashi ,  Zin Lin ,  Nicolas Romeo

IPC: G01T1/20 ,  G01N23/04 ,  G01N23/083 ,  G01N23/2251

CPC classification number: G01T1/2018 ,  G01N23/04 ,  G01N23/083 ,  G01N23/2251

Abstract: Methods and systems are disclosed that enhance the yield and speed of emission and control the spectral and angular emission of light emitted by materials under irradiation by high-energy particles through a process known as scintillation. In each case, a photonic structure (of nano- or micron-scale feature sizes) is integrated with a scintillating material, and the photonic structure enhances the yield or controls the spectrum of the material. Various embodiments of this technology and practical demonstrations are disclosed.

公开(公告)号：US20140230884A1

公开(公告)日：2014-08-21

申请号：US13768725

申请日：2013-02-15

Applicant: Massachusetts Institute of Technology

Inventor： Ofer Shapira ,  Marin Soljacic ,  Bo Zhen ,  Song-Liang Chua ,  Jeongwon Lee ,  John Joannopoulos

IPC: H01S3/30 ,  H01L31/055 ,  G01J3/443

CPC classification number: H01L31/055 ,  B82Y20/00 ,  G01N21/648 ,  G01N21/658 ,  G02B6/1225 ,  H01L31/054 ,  H01L31/0547 ,  H01S3/022 ,  H01S3/094034 ,  H01S3/168 ,  Y02E10/52 ,  Y10S977/759 ,  Y10S977/774

Abstract: Disclosed herein is a system for stimulating an emission from at least one emitter, such as a quantum dot or organic molecule, on the surface of a photonic crystal comprising a patterned dielectric substrate. Embodiments of this system include a laser or other source that illuminates the emitter and the photonic crystal, which is characterized by an energy band structure exhibiting a Fano resonance, from a first angle so as to stimulate the emission from the emitter at a second angle. The coupling between the photonic crystal and the emitter may result in spectral and angular enhancement of the emission through excitation and extraction enhancement. These enhancement mechanisms also reduce the emitter's lasing threshold. For instance, these enhancement mechanisms enable lasing of a 100 nm thick layer of diluted organic molecules solution with reduced threshold intensity. This reduction in lasing threshold enables more efficient organic light emitting devices and more sensitive molecular sensing.

Abstract translation: 本文公开了一种用于在包括图案化电介质基底的光子晶体的表面上刺激来自至少一个发射体（例如量子点或有机分子）的发射的系统。 该系统的实施例包括从第一角度照射发射体和光子晶体的激光器或其他源，其特征在于呈现出Fano共振的能带结构，以便以第二角度刺激发射器的发射。 光子晶体和发射极之间的耦合可以通过激发和提取增强而导致发射的光谱和角增强。 这些增强机制还会降低发射器的激光阈值。 例如，这些增强机制使得能够以降低的阈值强度激发100nm厚的稀释的有机分子溶液层。 激光阈值的这种降低使得更有效的有机发光器件和更敏感的分子感测。