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Title: Opto-electronic device for frequency standard generation and terahertz-range optical demodulation based on quantum interference

Abstract

An opto-electronic system and technique for comparing laser frequencies with large frequency separations, establishing new frequency standards, and achieving phase-sensitive detection at ultra high frequencies. Light responsive materials with multiple energy levels suitable for multi-photon excitation are preferably used for nonlinear mixing via quantum interference of different excitation paths affecting a common energy level. Demodulation of a carrier with a demodulation frequency up to 100's THZ can be achieved for frequency comparison and phase-sensitive detection. A large number of materials can be used to cover a wide spectral range including the ultra violet, visible and near infrared regions. In particular, absolute frequency measurement in a spectrum from 1.25 .mu.m to 1.66 .mu.m for fiber optics can be accomplished with a nearly continuous frequency coverage.

Inventors:
 [1];  [2];  [3]
  1. Pasadena, CA
  2. H.o slashed.jbjerg, DK
  3. LaCanada, CA
Issue Date:
Research Org.:
California Institute of Technology (CalTech), Pasadena, CA (United States)
OSTI Identifier:
872130
Patent Number(s):
5866896
Application Number:
08/799169
Assignee:
California Institute of Technology (Pasadena, CA)
Patent Classifications (CPCs):
G - PHYSICS G02 - OPTICS G02F - DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING
G - PHYSICS G04 - HOROLOGY G04F - TIME-INTERVAL MEASURING
DOE Contract Number:  
FG03-94ER14473
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
opto-electronic; device; frequency; standard; generation; terahertz-range; optical; demodulation; based; quantum; interference; technique; comparing; laser; frequencies; separations; establishing; standards; achieving; phase-sensitive; detection; ultra; light; responsive; materials; multiple; energy; levels; suitable; multi-photon; excitation; preferably; nonlinear; mixing; via; paths; affecting; common; level; carrier; 100; thz; achieved; comparison; cover; wide; spectral; range; including; violet; visible; near; infrared; regions; particular; absolute; measurement; spectrum; 25; 66; fiber; optics; accomplished; nearly; continuous; coverage; modulation frequency; phase-sensitive detection; sensitive detection; frequency measurement; spectral range; near infrared; quantum interference; fiber optics; energy level; fiber optic; energy levels; ultra violet; electronic device; responsive material; infrared region; laser frequencies; linear mix; /250/372/

Citation Formats

Georgiades, Nikos P, Polzik, Eugene S, and Kimble, H Jeff. Opto-electronic device for frequency standard generation and terahertz-range optical demodulation based on quantum interference. United States: N. p., 1999. Web.
Georgiades, Nikos P, Polzik, Eugene S, & Kimble, H Jeff. Opto-electronic device for frequency standard generation and terahertz-range optical demodulation based on quantum interference. United States.
Georgiades, Nikos P, Polzik, Eugene S, and Kimble, H Jeff. Tue . "Opto-electronic device for frequency standard generation and terahertz-range optical demodulation based on quantum interference". United States. https://www.osti.gov/servlets/purl/872130.
@article{osti_872130,
title = {Opto-electronic device for frequency standard generation and terahertz-range optical demodulation based on quantum interference},
author = {Georgiades, Nikos P and Polzik, Eugene S and Kimble, H Jeff},
abstractNote = {An opto-electronic system and technique for comparing laser frequencies with large frequency separations, establishing new frequency standards, and achieving phase-sensitive detection at ultra high frequencies. Light responsive materials with multiple energy levels suitable for multi-photon excitation are preferably used for nonlinear mixing via quantum interference of different excitation paths affecting a common energy level. Demodulation of a carrier with a demodulation frequency up to 100's THZ can be achieved for frequency comparison and phase-sensitive detection. A large number of materials can be used to cover a wide spectral range including the ultra violet, visible and near infrared regions. In particular, absolute frequency measurement in a spectrum from 1.25 .mu.m to 1.66 .mu.m for fiber optics can be accomplished with a nearly continuous frequency coverage.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {2}
}

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