Mode matching method for absorption spectroscopy systems

Bouzid, Ahmed

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Title: Mode matching method for absorption spectroscopy systems

Abstract

Systems and methods for controlling optical feedback in an optical system. A resonant optical cavity includes at least two cavity mirrors, one of which is a cavity coupling mirror, and has a plurality of optical resonance cavity modes. A radiation source emits a beam of continuous wave radiation and is capable of being scanned whereby a mean optical frequency of the continuous wave radiation beam is adjustable over a range of frequencies, wherein the radiation source is responsive to optical feedback radiation emerging from the cavity, and wherein the mode matching optics couples the beam of continuous wave radiation to the cavity via the cavity coupling mirror. The radiation source and the mode matching optics are aligned so that a mode fill ratio is reduced relative to a maximum mode fill ratio, wherein the laser beam is coupled with a fundamental cavity mode.

Inventors:: Bouzid, Ahmed

Issue Date:: 2022-09-13

Research Org.:: Li-Cor, Inc., Lincoln, NE (United States)

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1925101

Patent Number(s):: 11441944

Application Number:: 16/734,078

Assignee:: Li-Cor, Inc. (Lincoln, NE)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
G01J3/021 - {using plane or convex mirrors, parallel phase plates, or particular reflectors}
G01J3/0237 - {Adjustable, e.g. focussing}
G01J3/027 - {Control of working procedures of a spectrometer
G01J3/10 - Arrangements of light sources specially adapted for spectrometry or colorimetry

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2021/391 - {Intracavity sample}
G01N21/39 - using tunable lasers
G01N2201/06113 - Coherent sources
G01N2201/0636 - Reflectors

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B17/004 - {Systems comprising a plurality of reflections between two or more surfaces, e.g. cells, resonators

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
H01S5/0071 - {Beam steering, e.g. whereby a mirror outside the cavity is present to change the beam direction}
H01S5/0656 - {Seeding, i.e. an additional light input is provided for controlling the laser modes, for example by back-reflecting light from an external optical component

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DOE Contract Number:: AR0000537

Resource Type:: Patent

Resource Relation:: Patent File Date: 01/03/2020

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

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                    Bouzid, Ahmed. Mode matching method for absorption spectroscopy systems.  United States: N. p., 2022. 
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                    Bouzid, Ahmed. Mode matching method for absorption spectroscopy systems.  United States.

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                    Bouzid, Ahmed. Tue .  
        "Mode matching method for absorption spectroscopy systems".  United States.  https://www.osti.gov/servlets/purl/1925101.

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@article{osti_1925101,

  title        = {Mode matching method for absorption spectroscopy systems},

  author       = {Bouzid, Ahmed},

  abstractNote = {Systems and methods for controlling optical feedback in an optical system. A resonant optical cavity includes at least two cavity mirrors, one of which is a cavity coupling mirror, and has a plurality of optical resonance cavity modes. A radiation source emits a beam of continuous wave radiation and is capable of being scanned whereby a mean optical frequency of the continuous wave radiation beam is adjustable over a range of frequencies, wherein the radiation source is responsive to optical feedback radiation emerging from the cavity, and wherein the mode matching optics couples the beam of continuous wave radiation to the cavity via the cavity coupling mirror. The radiation source and the mode matching optics are aligned so that a mode fill ratio is reduced relative to a maximum mode fill ratio, wherein the laser beam is coupled with a fundamental cavity mode.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2022},

  month        = {9}

}

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Patent:

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