Laser device for nonlinear conversion of light

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	Laser device for nonlinear conversion of light
其他题名	Laser device for nonlinear conversion of light
	WAARTS, ROBERT G.; COPNER, NIGEL
	2004-07-08
专利权人	LUMENTUM OPERATIONS LLC
公开日期	2004-07-08
授权国家	美国
专利类型	发明申请
摘要	A laser apparatus for nonlinear conversion of light is disclosed utilizing a laser diode having a reflective back facet and a front facet having a reflectance of less than about 1% for emitting a multifrequency optical beam, and a nonlinear optical element for receiving the multifrequency optical beam and for generating a frequency-converted radiation. An external frequency-selective reflector is provided for power and spectral stabilization of the multifrequency optical beam, and for confining its optical spectrum within a bandwidth of efficient nonlinear conversion in the nonlinear optical element. The laser diode reflective back facet and the external frequency-selective reflector form an extended laser cavity. In operation, the multifrequency optical beam contains a plurality of longitudinal modes of the extended laser cavity which are confined within the frequency conversion bandwidth of the nonlinear element. The external frequency-selective reflector may comprise a waveguiding element such as a single-mode fiber incorporating a Bragg grating, and may also comprise a Fabry-Perot etalon.
其他摘要	本发明公开了一种利用激光二极管的非线性转换激光装置，该激光二极管具有反射背面和反射率小于约1％的前小平面，用于发射多频光束，以及用于接收多频光束的非线性光学元件。并用于产生频率转换的辐射。提供外部频率选择反射器，用于多频光束的功率和光谱稳定，并用于将其光谱限制在非线性光学元件中的有效非线性转换的带宽内。激光二极管反射背面和外部频率选择反射器形成扩展的激光腔。在操作中，多频光束包含扩展激光腔的多个纵模，它们被限制在非线性元件的频率转换带宽内。外部频率选择反射器可以包括波导元件，例如包含布拉格光栅的单模光纤，并且还可以包括法布里 - 珀罗标准具。
主权项	A laser apparatus for nonlinear frequency conversion of light comprising: a) a semiconductor laser diode having a reflective back facet and a front facet with a reflection coefficient of less than about 1% for emitting multifrequency laser radiation in multiple longitudinal modes and an essentially single spatial mode along an optical path; b) a partially reflecting filter having a reflection bandwidth b disposed to receive the multifrequency laser radiation from the front facet and to reflect a first portion of the multifrequency laser radiation of bandwidth b towards the front facet, for confining the operation of the semiconductor laser diode within said bandwidth b and for transmitting a second portion of the multifrequency laser radiation along the optical path; c) a nonlinear optical element having nonlinear optical conversion bandwidth c disposed to receive the second portion of the multifrequency laser radiation for nonlinear frequency conversion of the multifrequency laser radiation and for producing a frequency-converted multifrequency radiation; wherein said partially reflecting filter and the back facet of the semiconductor laser diode form a cavity having a longitudinal mode spacing a, wherein the reflection bandwidth b is smaller than 3 c and the longitudinal mode spacing a is substantially smaller than the nonlinear optical conversion bandwidth c and the reflection bandwidth b, for enabling nonlinear frequency conversion of a plurality of longitudinal modes of the extended cavity.
申请日期	2003-12-22
专利号	US20040131093A1
专利状态	授权
申请号	US10/742959
公开（公告）号	US20040131093A1
IPC 分类号	G02F1/35 \| G02F1/377 \| H01S5/00 \| H01S5/028 \| H01S5/06 \| H01S5/065 \| H01S5/10 \| H01S5/14 \| H01S3/10
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/65871
专题	半导体激光器专利数据库
作者单位	LUMENTUM OPERATIONS LLC
推荐引用方式 GB/T 7714	WAARTS, ROBERT G.,COPNER, NIGEL. Laser device for nonlinear conversion of light. US20040131093A1[P]. 2004-07-08.