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公开(公告)号：US20050123012A1
公开(公告)日：2005-06-09
申请号：US10982855
申请日：2004-11-08
申请人： Naoki Hayamizu , Yutaka Ohki , Hideo Aoyagi , Takeshi Koiso , Yuji Yamagata , Kiyofumi Muro
发明人： Naoki Hayamizu , Yutaka Ohki , Hideo Aoyagi , Takeshi Koiso , Yuji Yamagata , Kiyofumi Muro
IPC分类号： H01S3/00 , H01S3/08 , H01S5/022 , H01S5/024 , H01S5/0683 , H01S5/10 , H01S5/14 , H01S5/20 , H01S5/223 , H01S5/32 , H01S5/343
CPC分类号： B82Y20/00 , H01S5/02208 , H01S5/02248 , H01S5/02415 , H01S5/02438 , H01S5/0652 , H01S5/0683 , H01S5/1039 , H01S5/146 , H01S5/2009 , H01S5/2231 , H01S5/3211 , H01S5/34313 , H01S2301/02
摘要： A laser module includes a semiconductor laser element and a feedback optical component forming an external cavity with the semiconductor laser element. Even if a ratio of a current threshold of the laser module changing according to a polarized state of returned light from the feedback optical component to a current threshold of the semiconductor laser element is in an arbitrary range within a predetermined range, a total value of a relative intensity noise occurring between a first frequency determined according to a cavity length of the external cavity and at least equal to or more than a frequency band of using a laser light and a second frequency calculated by multiplying the first frequency by a predetermined number is equal to or more than −40 dB.
摘要翻译： 激光模块包括半导体激光元件和形成具有半导体激光元件的外部空腔的反馈光学元件。 即使根据来自反馈光学分量的返回光的偏振状态改变为半导体激光元件的电流阈值的激光器模块的电流阈值的比例在预定范围内的任意范围内， 在根据外部空腔的腔长度确定的至少等于或大于使用激光的频带的第一频率和通过将第一频率乘以预定数量而计算的第二频率之间产生的相对强度噪声相等 至-40dB以上。
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2.发明授权Semiconductor laser module, optical measuring method and optical measuring apparatus 有权半导体激光器模块，光学测量方法和光学测量仪器公开(公告)号：US06901095B2
公开(公告)日：2005-05-31
申请号：US10193232
申请日：2002-07-12
CPC分类号： H01S5/02284 , H01S5/02204 , H01S5/02212 , H01S5/0222 , H01S5/02415 , H01S5/02438 , H01S5/0683
摘要： A package accommodates an LD device for emitting laser light with the center wavelength of which is in a range of 1300 to 1440 nm and airtight seals a light path extending from the LD device to an incident end of an optical fiber. The package is filled with a nitrogen gas at a standard atmospheric pressure with the amount of moisture limited to a value lower than 100000 ppm by volume or less. Therefore, the amount of moisture in the light path for laser light within the package is limited to 100000 ppm by volume or less.
摘要翻译： 封装容纳用于发射中心波长在1300至1440nm范围内的激光的LD器件，并将从LD器件延伸到光纤入射端的光路密封。 在标准大气压下用氮气填充包装，水分量限制在低于100000ppm（体积）以下的值。 因此，封装内的激光用光路中的水分量被限制为10万体积ppm以下。
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公开(公告)号：US07649921B2
公开(公告)日：2010-01-19
申请号：US10982855
申请日：2004-11-08
申请人： Naoki Hayamizu , Yutaka Ohki , Hideo Aoyagi , Takeshi Koiso , Yuji Yamagata , Kiyofumi Muro
发明人： Naoki Hayamizu , Yutaka Ohki , Hideo Aoyagi , Takeshi Koiso , Yuji Yamagata , Kiyofumi Muro
CPC分类号： B82Y20/00 , H01S5/02208 , H01S5/02248 , H01S5/02415 , H01S5/02438 , H01S5/0652 , H01S5/0683 , H01S5/1039 , H01S5/146 , H01S5/2009 , H01S5/2231 , H01S5/3211 , H01S5/34313 , H01S2301/02
摘要： A laser module includes a semiconductor laser element and a feedback optical component forming an external cavity with the semiconductor laser element. Even if a ratio of a current threshold of the laser module changing according to a polarized state of returned light from the feedback optical component to a current threshold of the semiconductor laser element is in an arbitrary range within a predetermined range, a total value of a relative intensity noise occurring between a first frequency determined according to a cavity length of the external cavity and at least equal to or more than a frequency band of using a laser light and a second frequency calculated by multiplying the first frequency by a predetermined number is equal to or more than −40 dB.
摘要翻译： 激光模块包括半导体激光元件和形成具有半导体激光元件的外部空腔的反馈光学元件。 即使根据来自反馈光学分量的返回光的偏振状态改变为半导体激光元件的电流阈值的激光器模块的电流阈值的比例在预定范围内的任意范围内， 在根据外部空腔的腔长度确定的至少等于或大于使用激光的频带的第一频率和通过将第一频率乘以预定数量而计算的第二频率之间产生的相对强度噪声相等 至-40dB以上。
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