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Title:
METHODS AND APPARATUS TO GENERATE TERAHERTZ WAVES THROUGH CASCADED NONLINEAR PROCESSES
Document Type and Number:
WIPO Patent Application WO/2022/240577
Kind Code:
A3
Abstract:
A system and method that may enable the generation of highly-efficient, high-power, narrow-linewidth, and tunable light sources from microwave frequencies to mid-infrared wavelengths is disclosed. The light source comprises a nonlinear medium coupled to a multi-modal cavity and a high-energy pump source. The nonlinear medium provides three-wave mixing between modes present in the cavity to generate, for example, terahertz waves. The broadband cavity enables cascading nonlinear processes. By engineering the Q-factors of the cavity's many modes, red-shifted (stokes) cascaded nonlinear processes strongly dominate over their blue-shifted (anti-stokes) counterparts, resulting in a quasi-complete depletion of the pump energy into the THz mode.

Inventors:
JOHNSON STEVEN G (US)
SOLJACIC MARIN (US)
ROQUES-CARMES CHARLES (US)
SALAMIN YANNICK (US)
LIN ZIN (US)
Application Number:
PCT/US2022/026129
Publication Date:
March 16, 2023
Filing Date:
April 25, 2022
Export Citation:
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Assignee:
MASSACHUSETTS INST TECHNOLOGY (US)
International Classes:
H01S3/081; G02B5/08; G02F1/35; H01S3/083; H01S3/109; H01S5/04
Domestic Patent References:
WO2020120293A12020-06-18
Foreign References:
US20050163187A12005-07-28
US20070102694A12007-05-10
US20150338719A12015-11-26
US20200166822A12020-05-28
Attorney, Agent or Firm:
NIELDS, LEMACK & FRAME, LLC et al. (US)
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