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Broadband light source based on crystalline phosphor

A phosphor and light source technology, applied in the field of broadband light sources based on crystalline phosphors, can solve the problems of limiting the maximum phosphor emission brightness, limiting the laser intensity, etc.

Active Publication Date: 2020-04-17
THORLABS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This limits the maximum pump laser intensity applied to the phosphor, which in turn limits the maximum phosphor emission brightness

Method used

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  • Broadband light source based on crystalline phosphor
  • Broadband light source based on crystalline phosphor
  • Broadband light source based on crystalline phosphor

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Embodiment Construction

[0028] The description of illustrative embodiments in accordance with the principles of the invention is intended to be read in conjunction with the accompanying drawings, which are considered a part of the entire written description. In describing the disclosed embodiments of the present invention, any references to directions or orientations are for convenience of description only and do not limit the scope of the present invention in any way. Related terms such as "lower", "upper", "horizontal", "vertical", "above", "below", "upward", "downward", "top" and "bottom" and their derivatives (for example, "horizontally" "downwardly" ", "upwardly", etc.) are to be interpreted as the direction then described or as shown in the figure in question. These relative terms are for convenience of description only and do not require the device to be constructed or operated in a particular orientation unless expressly indicated. Terms such as "attached," "attached," "connected," "coupled,...

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Abstract

A phosphor based light source, including: an incident beam of light focused onto the front surface of a piece of phosphor; wherein the phosphor has polished back surface coated with a high-reflection,high-thermal-conduction layer, sandwiched between the phosphor and a heat sink, and the phosphor emission light is collected into a fiber or fiber bundle by a single lens or lens groups.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 547485, filed August 18, 2017. The contents of US Provisional Application No. 62 / 547485 are hereby incorporated by reference. technical field [0003] The present invention relates generally to broadband light source devices, and more particularly to broadband light sources based on crystalline phosphors. Background technique [0004] Optogenetic and scientific imaging applications require high-brightness, incoherent light sources with specific wavelengths and bandwidths, primarily in the visible band. Current solutions such as laser-pumped plasma sources and white LEDs exhibit high output optical power, but their own brightness is limited due to the relatively large etendue of such sources. Supercontinuum lasers are quite bright, but most of their output optical power is in the infrared (IR) spectrum, which is not helpful for the above applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K2/00
CPCF21V13/14F21V7/30F21V9/35F21V29/502F21V5/008F21V9/20F21V29/70G02B6/0006H05B33/24F21V3/04
Inventor 刘一帆劳逸希曹昇炜
Owner THORLABS INC