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	Multi-wavelength vcsel array to reduce speckle
	GESKE, JONATHAN; WANG, CHAD; BURKE, ELLIOT
	2013-08-08
著作权人	FLIR SYSTEMS, INC.
专利号	WO2013116083A1
国家	世界知识产权组织
文献子类	发明申请
其他题名	Multi-wavelength vcsel array to reduce speckle
英文摘要	Embodiments of the invention describe an illuminator having a light source to originate an illumination beam, wherein the light source further comprises a set of vertical- cavity surface emitting lasers (VCSELs) (102) including a first VCSEL (401) having a first laser emission wavelength (405), and a second VCSEL (402) having a second laser emission wavelength (406) different than the first laser emission wavelength. Thus, by varying laser emission wavelengths of VCSELs in a VCSEL array, embodiments of the invention produce low- contrast speckle, and do not limit the imaging capabilities of the host illumination system. In some embodiments of the invention, vertical external cavity surface emitting lasers (VECSELs) are utilized to produce the above described varying laser emission wavelengths. The VCSEL may be on a single chip with wavelength variation due to a variation of the thickness of a spacer layer (511-514) between the two DBR's within the cavity of the VCSEL, i.e. by changing the cavity length.
公开日期	2013-08-08
申请日期	2013-01-24
状态	未确认
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/85514]
专题	半导体激光器专利数据库
作者单位	FLIR SYSTEMS, INC.
推荐引用方式 GB/T 7714	GESKE, JONATHAN,WANG, CHAD,BURKE, ELLIOT. Multi-wavelength vcsel array to reduce speckle. WO2013116083A1. 2013-08-08.

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