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1. WO2007085982 - A CO-DOPED UP-CONVERSION LASER SYSTEM

Publication Number WO/2007/085982
Publication Date 02.08.2007
International Application No. PCT/IB2007/050153
International Filing Date 17.01.2007
IPC
H01S 3/109 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
106by controlling a device placed within the cavity
108using a non-linear optical device, e.g. exhibiting Brillouin- or Raman-scattering
109Frequency multiplying, e.g. harmonic generation
H01S 3/16 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
14characterised by the material used as the active medium
16Solid materials
CPC
H01S 3/094003
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
09Processes or apparatus for excitation, e.g. pumping
091using optical pumping
094by coherent light
094003the pumped medium being a fibre
H01S 3/094092
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
09Processes or apparatus for excitation, e.g. pumping
091using optical pumping
094by coherent light
094092Upconversion pumping
H01S 3/1603
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
14characterised by the material used as the active medium
16Solid materials
1601characterised by an active (lasing) ion
1603rare earth
H01S 3/1608
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
14characterised by the material used as the active medium
16Solid materials
1601characterised by an active (lasing) ion
1603rare earth
1608erbium
H01S 3/1615
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
14characterised by the material used as the active medium
16Solid materials
1601characterised by an active (lasing) ion
1603rare earth
1615samarium
H01S 3/17
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
14characterised by the material used as the active medium
16Solid materials
17amorphous, e.g. glass
Applicants
  • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH [DE]/[DE] (DE)
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL] (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CM, CN, CO, CR, CU, CY, CZ, DK, DM, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, MG, MK, ML, MN, MR, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SI, SK, SL, SM, SN, SV, SY, SZ, TD, TG, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
  • WEICHMANN, Ulrich [DE]/[NL] (UsOnly)
  • HEUSLER, Gero [DE]/[NL] (UsOnly)
Inventors
  • WEICHMANN, Ulrich
  • HEUSLER, Gero
Agents
  • ROLFES, Johannes G. A.
Priority Data
06100894.226.01.2006EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A CO-DOPED UP-CONVERSION LASER SYSTEM
(FR) SYSTÈME LASER DE CONVERSION-ÉLÉVATION CO-DOPÉ
Abstract
(EN)
The invention relates to a co-doped upconversion laser system comprising a host-material, whereas the host material is made of at least one crystal material and/ or of a glass material, which features a low phonon energy, whereas said host material comprises a dopant made of Erbium (Er3+), which is pumped by laser light with a single wavelength in the infrared wavelength range, whereas said host material furthermore comprises at least one co-dopant made of Terbium (Tb3+) or Samarium (Sm3+), in order to emit laser radiation in the range of at least one visible wavelength. This system provides a co-doped upconversion laser system featuring an elimination of coulour centres, a reduced re-absorption of the laser radiation and the emission of laser light in the range of visible wavelengths.
(FR)
L'invention concerne un système laser de conversion-élévation co-dopé qui comprend un matériau hôte, ledit matériau hôte étant composé d'au moins un matériau cristallin et/ou d'un matériau vitreux et présentant une faible énergie de phonons. Ledit matériau hôte comprend un dopant composé d'erbium (Er3+), qui est pompé par de la lumière laser à une longueur d'onde unique dans la plage de longueur d'onde infrarouge. Ledit matériau hôte comprend également au moins un co-dopant composé de terbium (Tb3+) ou de samarium (Sm3+), afin d'émettre un rayonnement de lumière laser dans la plage d'au moins une longueur d'onde visible. Le système de l'invention permet d'obtenir un système laser de conversion-élévation co-dopé assurant une élimination de centres colorés, une réabsorption réduite du rayonnement laser et l'émission de lumière laser dans la plage de longueurs d'ondes visibles.
Also published as
EP2007700616
Latest bibliographic data on file with the International Bureau