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    • 25. 发明公开
    • Thermal management of a ridge-type hybrid laser, device, and method
    • Thermisches Management eines Hydridlasers mit Stegwellenleiter,Vorrichtung und Verfahren
    • EP2866316A1
    • 2015-04-29
    • EP13306460.0
    • 2013-10-23
    • ALCATEL LUCENT
    • Enright, RyanMathews, Ian
    • H01S5/223H01S5/02H01S5/026H01S5/10H01S5/024H01S5/028
    • H01S5/2031H01S5/021H01S5/02469H01S5/026H01S5/0282H01S5/1032H01S5/14H01S5/22H01S5/2235H01S2301/176
    • Aspects and embodiments relate to a device and method for providing a device. The device comprises: a ridge-type hybrid laser; and a thermally conductive, electrically insulating, coating adjacent a surface of the ridge-type hybrid laser; the coating being configured to transfer heat away from the laser. It will be appreciated that aspects and embodiments recognise that a thermal solution can be implemented to enable energy efficient, scalable, reliable and low cost cooling designs for integrated photonics devices. An arrangement in accordance with aspects and embodiments described herein can provide improved thermal performance of a hybrid ridge type laser device. Such improved thermal performance can facilitate better temperature control, and lower device temperature can result in better device performance and longer device lifetimes. Aspects and embodiments help to provide an integrated thermal approach which can deal with thermal spreading close to where heat on a device is generated within a laser waveguide.
    • 方面和实施例涉及用于提供设备的设备和方法。 该装置包括:脊型混合激光器; 以及邻近脊型混合激光器的表面的导热电绝缘涂层; 所述涂层构造成将热量从激光器传送出去。 应当理解,方面和实施例认识到,可以实现热解决方案以实现用于集成光子器件的能量效率,可缩放,可靠和低成本的冷却设计。 根据本文所描述的方面和实施例的布置可以提供混合脊型激光装置的改进的热性能。 这种改进的热性能可以促进更好的温度控制,并且较低的器件温度可以导致更好的器件性能和更长的器件寿命。 方面和实施例有助于提供一种能够处理在激光波导内在器件上产生热量附近的热扩散的集成热方法。
    • 26. 发明公开
    • GROUP-III NITRIDE SEMICONDUCTOR LASER ELEMENT
    • GRUPPE-III-NITRID-HALBLEITERLASERELEMENT
    • EP2852013A1
    • 2015-03-25
    • EP13790822.4
    • 2013-02-22
    • Sumitomo Electric Industries, Ltd.Sony Corporation
    • UENO, MasakiKATAYAMA, KojiIKEGAMI, TakatoshiNAKAMURA, TakaoYANASHIMA, KatsunoriNAKAJIMA, Hiroshi
    • H01S5/028H01S5/22H01S5/343
    • H01S5/3013B82Y20/00H01S5/0202H01S5/0287H01S5/2031H01S5/22H01S5/3063H01S5/3202H01S5/3213H01S5/34333
    • A group-III nitride semiconductor laser device is provided which can reduce an operating current required to achieve a desired optical output. In the group-III nitride semiconductor laser device 11, the first reflective layer 43a of the lasing cavity has a reflectance of less than 60%, and the second reflective layer 43b of the lasing cavity has a reflectance of 85% or more. This laser device can prevents degradation in the lasing characteristics due to an increase in the threshold current, and a spatial unevenness in the photon density in the lasing cavity. When the reflectance of one of the end faces 26 and 28 is excessively low, this low reflectance results in increase in mirror loss to causes an increase in the threshold current. When the reflectance of the end faces 26 and 28 is excessively high, this high reflectance causes spatial unevenness in the optical density in the lasing cavity, thereby lowering the laser gain. The unevenness in the photon density (spatial hole burning) leads to not only the occurrence of a kink in the I-L characteristics but also a decrease in the wall-plug efficiency.
    • 提供III族氮化物半导体激光器件,其可以减少实现期望的光输出所需的工作电流。 在III族氮化物半导体激光器件11中,激光腔的第一反射层43a的反射率小于60%,激光腔的第二反射层43b的反射率为85%以上。 该激光装置可以防止由于阈值电流的增加以及激光腔中的光子密度的空间不均匀引起的激光特性的劣化。 当端面26和28中的一个的反射率过低时,这种低反射率导致镜损耗的增加导致阈值电流的增加。 当端面26和28的反射率过高时,这种高反射率导致激光腔中的光密度的空间不均匀,从而降低了激光增益。 光子密度的不均匀性(空间孔燃烧)不仅导致I-L特性的扭结的发生,而且导致壁塞效率的降低。