WO2005004245A3 - Photoluminescent infrared source - Google Patents

Photoluminescent infrared source Download PDF

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Publication number
WO2005004245A3
WO2005004245A3 PCT/GB2004/002709 GB2004002709W WO2005004245A3 WO 2005004245 A3 WO2005004245 A3 WO 2005004245A3 GB 2004002709 W GB2004002709 W GB 2004002709W WO 2005004245 A3 WO2005004245 A3 WO 2005004245A3
Authority
WO
WIPO (PCT)
Prior art keywords
semiconducting layer
source
photoluminescent
output
layer
Prior art date
Application number
PCT/GB2004/002709
Other languages
French (fr)
Other versions
WO2005004245A2 (en
Inventor
Mohammed Reza Taghizadeh
Charles Thomas Elliot
Original Assignee
Univ Heriot Watt
Mohammed Reza Taghizadeh
Crowder John Graham
Charles Thomas Elliot
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Heriot Watt, Mohammed Reza Taghizadeh, Crowder John Graham, Charles Thomas Elliot filed Critical Univ Heriot Watt
Publication of WO2005004245A2 publication Critical patent/WO2005004245A2/en
Publication of WO2005004245A3 publication Critical patent/WO2005004245A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/42—Arrays of surface emitting lasers
    • H01S5/423—Arrays of surface emitting lasers having a vertical cavity
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • G02F2/02—Frequency-changing of light, e.g. by quantum counters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
    • H01S5/041—Optical pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
    • H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
    • H01S5/18386—Details of the emission surface for influencing the near- or far-field, e.g. a grating on the surface
    • H01S5/18388—Lenses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
    • H01S5/4087—Array arrangements, e.g. constituted by discrete laser diodes or laser bar emitting more than one wavelength

Abstract

A photoluminescent radiation source, particularly for generating infrared radiation. The source is made from a layer of semiconducting material which, when optically pumped, emits radiation in a desired wavelength range, and an output array of micro-lenses attached to an output surface of the semiconducting layer. The output surface of the semiconducting layer is optically immersed by the output array of microlenses. In the preferred embodiment a further, input microlens array is attached to an input surface of the semiconducting layer to focus pump laser irradiation on to the semiconducting layer. The source has many applications, for example in gas sensing, active thermal imaging and infrared spectrometry.
PCT/GB2004/002709 2003-06-28 2004-06-24 Photoluminescent infrared source WO2005004245A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0315177A GB0315177D0 (en) 2003-06-28 2003-06-28 Photoluminescent infrared source
GB0315177.6 2003-06-28

Publications (2)

Publication Number Publication Date
WO2005004245A2 WO2005004245A2 (en) 2005-01-13
WO2005004245A3 true WO2005004245A3 (en) 2005-06-02

Family

ID=27676285

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/002709 WO2005004245A2 (en) 2003-06-28 2004-06-24 Photoluminescent infrared source

Country Status (2)

Country Link
GB (1) GB0315177D0 (en)
WO (1) WO2005004245A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0709272D0 (en) 2007-05-15 2007-06-20 Rolls Royce Plc Sensor coating
DE102007050167A1 (en) * 2007-10-19 2009-04-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Microlens array with integrated illumination

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5073041A (en) * 1990-11-13 1991-12-17 Bell Communications Research, Inc. Integrated assembly comprising vertical cavity surface-emitting laser array with Fresnel microlenses
US5513204A (en) * 1995-04-12 1996-04-30 Optical Concepts, Inc. Long wavelength, vertical cavity surface emitting laser with vertically integrated optical pump
JPH1183734A (en) * 1997-09-05 1999-03-26 Mitsubishi Heavy Ind Ltd Gas detector and gas detecting method
US6353502B1 (en) * 2000-06-13 2002-03-05 Eastman Kodak Company VCSEL field correction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5073041A (en) * 1990-11-13 1991-12-17 Bell Communications Research, Inc. Integrated assembly comprising vertical cavity surface-emitting laser array with Fresnel microlenses
US5513204A (en) * 1995-04-12 1996-04-30 Optical Concepts, Inc. Long wavelength, vertical cavity surface emitting laser with vertically integrated optical pump
JPH1183734A (en) * 1997-09-05 1999-03-26 Mitsubishi Heavy Ind Ltd Gas detector and gas detecting method
US6353502B1 (en) * 2000-06-13 2002-03-05 Eastman Kodak Company VCSEL field correction

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
ASIF KHAN M ET AL: "VERTICAL-CAVITY, ROOM-TEMPERATURE STIMULATED EMISSION FROM PHOTOPUMPED GAN FILMS DEPOSITED OVER SAPPHIRE SUBSTRATES USING LOW-PRESSURE METALORGANIC CHEMICAL VAPOR DEPOSITION", APPLIED PHYSICS LETTERS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 58, no. 14, 8 April 1991 (1991-04-08), pages 1515 - 1517, XP000209750, ISSN: 0003-6951 *
BLUM O ET AL: "Vertical-cavity surface-emitting lasers with integrated refractive microlenses", ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 31, no. 1, 5 January 1995 (1995-01-05), pages 44 - 45, XP006002297, ISSN: 0013-5194 *
GOURLEY P L ET AL: "SURFACE-EMITTING SEMICONDUCTOR LASER STRUCTURES FABRICATED BY MICROLITHOGRAPHY", JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS, WORLD SCIENTIFIC PUBLISHING, CO, SI, vol. 4, no. 1, January 1995 (1995-01-01), pages 27 - 81, XP000494886, ISSN: 0218-8635 *
MURAKAMI A ET AL: "PROPOSAL OF OPTICALLY PUMPED TUNABLE SURFACE EMITTING LASER", JAPANESE JOURNAL OF APPLIED PHYSICS, PUBLICATION OFFICE JAPANESE JOURNAL OF APPLIED PHYSICS. TOKYO, JP, vol. 40, no. 9A/B, PART 2, 15 September 2001 (2001-09-15), pages L935 - L936, XP001110859, ISSN: 0021-4922 *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 08 30 June 1999 (1999-06-30) *
POPOVIC Z D ET AL: "TECHNIQUE FOR MONOLITHIC FABRICATION OF MICROLENS ARRAYS", APPLIED OPTICS, OPTICAL SOCIETY OF AMERICA,WASHINGTON, US, vol. 27, no. 7, 1 April 1988 (1988-04-01), pages 1281 - 1284, XP000118684, ISSN: 0003-6935 *

Also Published As

Publication number Publication date
GB0315177D0 (en) 2003-08-06
WO2005004245A2 (en) 2005-01-13

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