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1. WO2010089866 - PLANE WAVEGUIDE TYPE LASER, AND DISPLAY DEVICE

Publication Number WO/2010/089866
Publication Date 12.08.2010
International Application No. PCT/JP2009/051941
International Filing Date 05.02.2009
IPC
H01S 3/042 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
02Constructional details
04Cooling arrangements
042for solid state lasers
H01S 3/06 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
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
H01S 3/094 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
09Processes or apparatus for excitation, e.g. pumping
091using optical pumping
094by coherent light
CPC
H01S 3/0092
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
005Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
0092Nonlinear frequency conversion, e.g. second harmonic generation [SHG] or sum- or difference-frequency generation outside the laser cavity
H01S 3/0405
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
02Constructional details
04Arrangements for thermal management
0405Conductive cooling, e.g. by heat sinks or thermo-electric elements
H01S 3/042
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
02Constructional details
04Arrangements for thermal management
042for solid state lasers
H01S 3/0632
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
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
0632Thin film lasers in which light propagates in the plane of the thin film
H01S 3/0804
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
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
08Construction or shape of optical resonators or components thereof
08018Mode suppression
0804Transverse or lateral mode control, e.g. specifically multimode
H01S 3/08072
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
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
08Construction or shape of optical resonators or components thereof
08072Thermal lensing or thermally induced birefringence; Compensation thereof
Applicants
  • 三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP]/[JP] (AllExceptUS)
  • 山本 修平 YAMAMOTO, Shuhei [JP]/[JP] (UsOnly)
  • 秋野 陽介 AKINO, Yosuke [JP]/[JP] (UsOnly)
  • 柳澤 隆行 YANAGISAWA, Takayuki [JP]/[JP] (UsOnly)
  • 平野 嘉仁 HIRANO, Yoshihito [JP]/[JP] (UsOnly)
Inventors
  • 山本 修平 YAMAMOTO, Shuhei
  • 秋野 陽介 AKINO, Yosuke
  • 柳澤 隆行 YANAGISAWA, Takayuki
  • 平野 嘉仁 HIRANO, Yoshihito
Agents
  • 曾我 道治 SOGA, Michiharu
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PLANE WAVEGUIDE TYPE LASER, AND DISPLAY DEVICE
(FR) LASER DE TYPE À GUIDE D'ONDES PLAN, ET DISPOSITIF D'AFFICHAGE
(JA) 平面導波路型レーザおよびディスプレイ装置
Abstract
(EN)
Disclosed is a plane waveguide type laser comprising a plane laser medium (5), a semiconductor laser (1) for introducing an excited light into the end face (5a) of the laser medium (5), first and second claddings (4a and 4b) joined to the lower face and the upper face of the laser medium (5) for forming a waveguide in vertical directions, a comb-shaped heat sink (2) joined to the lower face of the first cladding (4a), and a thermal lens generating means (20) joined to the upper face of the second cladding (4b). In this constitution, laser oscillations are performed in the vertical directions in the waveguide mode of the laser medium (5), and periodic lens effects are caused in the laser medium (5) in the horizontal directions by the thermal lens generating means (20), so that laser oscillations are performed in a plurality of resonator modes. Without dependence upon the size of the thermal lens due to the excitation, therefore, a resonator of a small circling loss can be formed to smooth the rising characteristics of pulse actions or CW actions thereby to produce high and stable outputs.
(FR)
L'invention concerne un laser de type à guide d'ondes plan comprenant un milieu actif de laser plan (5), un laser à semi-conducteur (1) pour introduire une lumière excitée dans la face d'extrémité (5a) du milieu actif de laser (5), un premier et un second placage (4a et 4b) joints à la face inférieure et la face supérieure du milieu actif de laser (5) pour former un guide d'onde dans des directions verticales, un dissipateur thermique (2) en forme de peigne, joint à la face inférieure du premier placage (4a), et un moyen de génération de lentille thermique (20), joint à la face supérieure du second placage (4b). Dans cette constitution, des oscillations laser sont réalisées dans les directions verticales dans le mode de guide d'ondes du milieu actif de laser (5), et le moyen de génération de lentille thermique (20) provoque des effets périodiques de lentille dans le milieu actif de laser (5) dans les directions horizontales, de telle sorte que les oscillations laser soient réalisées dans une pluralité de modes de résonateur. Par conséquent, indépendamment de la taille de la lentille thermique due à l'excitation, un résonateur à faible perte de propagation peut être formé pour lisser les caractéristiques montantes des actions d'impulsion ou des actions CW, pour produire ainsi des sorties élevées et stables.
(JA)
 本発明に係る平面導波路型レーザは、平板状のレーザ媒質5と、レーザ媒質5の端面5aに励起光を入射する半導体レーザ1と、レーザ媒質5の下面および上面に接合されて鉛直方向に導波路を形成する第1および第2のクラッド4a,4bと、第1のクラッド4aの下面に接合された櫛型のヒートシンク2と、第2のクラッド4bの上面に接合された熱レンズ発生手段20とを備えている。この構成において、鉛直方向は、レーザ媒質5の導波路モードでレーザ発振し、水平方向は、熱レンズ発生手段20によりレーザ媒質5に周期的なレンズ効果を形成して複数の共振器モードでレーザ発振する。これにより、励起による熱レンズの大きさによらず、周回損失の小さな共振器を形成することができ、パルス動作やCW動作の立ち上がり特性を平滑にし、高出力で安定した出力を得ることができる。
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