WO2009009888A1 - Light emitting devices with phosphosilicate glass - Google Patents

Light emitting devices with phosphosilicate glass Download PDF

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Publication number
WO2009009888A1
WO2009009888A1 PCT/CA2008/001296 CA2008001296W WO2009009888A1 WO 2009009888 A1 WO2009009888 A1 WO 2009009888A1 CA 2008001296 W CA2008001296 W CA 2008001296W WO 2009009888 A1 WO2009009888 A1 WO 2009009888A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
emitting device
core
optical waveguide
cladding
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CA2008/001296
Other languages
English (en)
French (fr)
Inventor
Bertrand Morasse
Jean-Philippe De Sandro
Eric Gagnon
Stéphane CHATIGNY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coractive High Tech Inc
Original Assignee
Coractive High Tech Inc
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 Coractive High Tech Inc filed Critical Coractive High Tech Inc
Priority to IN199KON2010 priority Critical patent/IN2010KN00199A/en
Priority to CA2693854A priority patent/CA2693854C/en
Priority to US12/669,440 priority patent/US8270445B2/en
Priority to EP08783214.3A priority patent/EP2179480B1/en
Priority to JP2010516339A priority patent/JP5563978B2/ja
Priority to CN200880105830.3A priority patent/CN101796697A/zh
Publication of WO2009009888A1 publication Critical patent/WO2009009888A1/en
Anticipated expiration legal-status Critical
Priority to IL203357A priority patent/IL203357A/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06716—Fibre compositions or doping with active elements
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/1601—Solid materials characterised by an active (lasing) ion
    • H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1618—Solid materials characterised by an active (lasing) ion rare earth ytterbium
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/17—Solid materials amorphous, e.g. glass
    • H01S3/175—Solid materials amorphous, e.g. glass phosphate glass
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
    • G02B6/03633—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - -
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03638—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06729—Peculiar transverse fibre profile
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06729—Peculiar transverse fibre profile
    • H01S3/06733—Fibre having more than one cladding
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06745—Tapering of the fibre, core or active region
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/17—Solid materials amorphous, e.g. glass
    • H01S3/176—Solid materials amorphous, e.g. glass silica or silicate glass

Definitions

  • the present invention relates generally to optically active glass and light emitting devices including such glass. More specifically, the invention relates to phosphosilicate optical waveguides and high output power amplifiers or lasers including the same.
  • Optical fiber lasers and amplifiers used in the amplification of light usually include optical fibers having optically active waveguiding cores doped with rare-earth active ions, such as for example, thulium, erbium, ytterbium and neodymium.
  • rare-earth active ions such as for example, thulium, erbium, ytterbium and neodymium.
  • Longitudinal mode beating can be an important source of high frequency noise which consequently gives rise to peak power fluctuations in the pulse structure of a pulsed amplifier or laser. Depending on its amplitude and frequency spectrum, this noise can severely limit the ability to generate stable optical pulses having special shapes with fine structures.
  • a light-emitting device including a phosphosilicate optically-active glass.
  • the core may have an outer region and an inner region, the outer region having a refractive index lower than a refractive index of the inner region.
  • the light-emitting device may be a device that emits light or alternatively and additionally amplifies light.
  • the light-emitting device may include an amplifier, wherein the amplifier includes the gain medium.
  • the light-emitting device may include a laser, wherein the laser includes the gain medium.
  • an optical waveguide for use in a light-emitting device, the optical waveguide comprising a gain medium including an optically-active phosphosilicate glass, wherein the phosphosilicate glass comprises at least one active ion dopant and from about 1 to 30 mol% of phosphorus oxide.
  • the optical waveguide may comprise a core and at least one cladding surrounding the core, and the gain medium may include the core or at least one of the cladding.
  • FIG. 1 A is a cross-sectional view of an optical waveguide of a light-emitting device, according to an embodiment of the invention.
  • FIG. 1 B is a cross-sectional view of an optical waveguide of a light-emitting device, according to another embodiment of the invention.
  • FIG. 5B is a diagram showing the measured loss upon slicing of a relay fiber to an optical waveguide according to the invention.
  • FIG. 6 is a diagram of the refractive index profile along the diameter of a double- cladding optical waveguide and along the diameter of a triple-cladding optical waveguide according to embodiments of the invention, showing a reduced core numerical aperture for a triple-cladding optical waveguide.
  • FIG. 7B is a diagram of the refractive index profile along the diameter of a core of an optical waveguide according to an embodiment of the invention, showing a stepped change in index of refraction.
  • FIG. 7C is a diagram of the refractive index profile along the diameter of a core of an optical waveguide according to an embodiment of the invention, showing a gradual change in index of refraction.
  • the light-emitting device may emit light and alternatively or additionally it may amplify light.
  • the light-emitting device is preferably embodied by an amplifier or a pulsed amplifier, it may be embodied by a laser, a pulsed laser, an optical source of amplified spontaneously emitted (ASE) radiation, any continuous wave (CW) or quasi-continuous wave (quasi-CW) amplifier or laser, be it coherent or incoherent, or by any other means of amplification or generation (source) of light.
  • a laser amplifies light by the stimulated emission of radiation. It includes a gain medium inside an optically cavity and means to supply, or pump, energy to the gain medium.
  • the gain medium is a material with appropriate optical properties.
  • the optical cavity causes the light to pass back and forth through the gain medium.
  • Energy is pumped into the gain medium. This energy excites atoms in the gain medium to transition to a higher energy level, creating a population inversion.
  • the photons stimulate the excited atoms to emit additional photons of the same wavelength and to decay down to a lower energy level, resulting in an amplification of the light.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Lasers (AREA)
  • Glass Compositions (AREA)
PCT/CA2008/001296 2007-07-16 2008-07-15 Light emitting devices with phosphosilicate glass Ceased WO2009009888A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
IN199KON2010 IN2010KN00199A (enExample) 2007-07-16 2008-07-15
CA2693854A CA2693854C (en) 2007-07-16 2008-07-15 Light emitting devices with phosphosilicate glass
US12/669,440 US8270445B2 (en) 2007-07-16 2008-07-15 Light emitting devices with phosphosilicate glass
EP08783214.3A EP2179480B1 (en) 2007-07-16 2008-07-15 Light emitting devices with phosphosilicate glass
JP2010516339A JP5563978B2 (ja) 2007-07-16 2008-07-15 りんケイ酸塩ガラスを有した発光装置
CN200880105830.3A CN101796697A (zh) 2007-07-16 2008-07-15 具有磷硅酸盐玻璃的发光器件
IL203357A IL203357A (en) 2007-07-16 2010-01-17 Radiant light devices with phosphosilicate glass

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92986407P 2007-07-16 2007-07-16
US60/929,864 2007-07-16

Publications (1)

Publication Number Publication Date
WO2009009888A1 true WO2009009888A1 (en) 2009-01-22

Family

ID=40259254

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2008/001296 Ceased WO2009009888A1 (en) 2007-07-16 2008-07-15 Light emitting devices with phosphosilicate glass

Country Status (9)

Country Link
US (1) US8270445B2 (enExample)
EP (1) EP2179480B1 (enExample)
JP (1) JP5563978B2 (enExample)
KR (1) KR101464583B1 (enExample)
CN (2) CN105305211A (enExample)
CA (1) CA2693854C (enExample)
IL (1) IL203357A (enExample)
IN (1) IN2010KN00199A (enExample)
WO (1) WO2009009888A1 (enExample)

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CN104993369B (zh) * 2015-06-24 2018-03-09 华中科技大学 一种基于光纤激光器暗化维护的暗化漂白装置和方法
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US8270445B2 (en) 2012-09-18
EP2179480A4 (en) 2013-04-24
IN2010KN00199A (enExample) 2015-08-28
CN105305211A (zh) 2016-02-03
KR20100043207A (ko) 2010-04-28
JP2010533634A (ja) 2010-10-28
CA2693854A1 (en) 2009-01-22
CN101796697A (zh) 2010-08-04
KR101464583B1 (ko) 2014-12-23
JP5563978B2 (ja) 2014-07-30
IL203357A (en) 2016-03-31
CA2693854C (en) 2015-12-01
EP2179480B1 (en) 2015-01-21
EP2179480A1 (en) 2010-04-28
US20100202481A1 (en) 2010-08-12

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