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1. WO2006055876 - SPECTRAL CONTROL OF LASER DIODE BARS AND STACKS

Publication Number WO/2006/055876
Publication Date 26.05.2006
International Application No. PCT/US2005/042066
International Filing Date 17.11.2005
IPC
H01S 3/13 2006.1
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
13Stabilisation of laser output parameters, e.g. frequency, amplitude
H01S 5/00 2006.1
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
5Semiconductor lasers
CPC
H01S 5/4012
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
5Semiconductor lasers
40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
4012Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms
H01S 5/4025
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
5Semiconductor lasers
40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
4025Array arrangements, e.g. constituted by discrete laser diodes or laser bar
H01S 5/405
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
5Semiconductor lasers
40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
4025Array arrangements, e.g. constituted by discrete laser diodes or laser bar
4031Edge-emitting structures
4043with vertically stacked active layers
405Two-dimensional arrays
H01S 5/4062
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
5Semiconductor lasers
40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
4025Array arrangements, e.g. constituted by discrete laser diodes or laser bar
4031Edge-emitting structures
4062with an external cavity or using internal filters, e.g. Talbot filters
H01S 5/4087
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
5Semiconductor lasers
40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
4025Array arrangements, e.g. constituted by discrete laser diodes or laser bar
4087emitting more than one wavelength
Applicants
  • ONDAX, INC. [US]/[US] (AllExceptUS)
  • STECKMAN, Gregory, J. [US]/[US] (UsOnly)
Inventors
  • STECKMAN, Gregory, J.
Priority Data
11/282,85517.11.2005US
60/628,76617.11.2004US
60/670,91312.04.2005US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SPECTRAL CONTROL OF LASER DIODE BARS AND STACKS
(FR) CONTROLE SPECTRAL DE BARRES ET DE PILES DE DIODES LASER
Abstract
(EN) The present invention provides controlling the locked wavelength of individual diodes in an array such that the spectral output of the array when taken as whole is of the desired form for a given application. In one embodiment, a volume holographic grating is formed that has a wavelength that varies on the filter in accordance with the physical position of a laser emitter in a diode bar or stack. The system can be used in connection with a collimator disposed to received the output of a diode bar or stack of diode bars. The modified filter is then disposed adjacent the output of the collimator to provide a suitable shaped spectral output. This technique can be applied to stacks of laser diode bars, where each bar can be made to operate at any desired wavelength, or even individual emitters within the bar, such that the combined spectral output is designed for a particular application.
(FR) L'invention concerne le contrôle de longueur d'onde verrouillée de diodes individuelles dans une série de diodes, de sorte que la sortie spectrale de la série, prise dans son ensemble, ait la forme souhaitée pour une application donnée. Selon une variante, on établit un réseau holographique de volume ayant une longueur d'onde qui varie sur le filtre selon la position physique d'un émetteur laser dans une barre ou une pile de barres de diodes. Le système peut être utilisé en liaison avec un collimateur disposé pour recevoir la sortie d'une barre ou d'une pile de barres de diodes. Le filtre modifié est ensuite placé en position adjacente à la sortie du collimateur pour l'établissement d'une sortie spectrale de forme appropriée. Cette technique peut être appliquée aux piles de barres de diodes laser, chaque barre pouvant fonctionner à telle ou telle longueur d'onde requise, ou même à des émetteurs individuels dans la barre, de sorte que la sortie spectrale combinée soit adaptée à une application particulière.
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