Limitations to emission spot size in laser lighting

Ole Bjarlin Jensen; Anastasiia Krasnoshchoka; Anders Kragh Hansen; Anders Thorseth; Dominik Marti; Xu Jian; Paul Michael Petersen

doi:10.1117/12.2542674

Limitations to emission spot size in laser lighting

Ole Bjarlin Jensen^*, Anastasiia Krasnoshchoka, Anders Kragh Hansen, Anders Thorseth, Dominik Marti, Xu Jian, Paul Michael Petersen

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Laser lighting is an emerging technology to generate high luminance lighting. To achieve high luminance or high luminous exitance, the light emitter must have high flux and small size simultaneously. When laser light is focused to a small spot size on the phosphor material, the two main limitations are saturation of the phosphor material and the spot size of the generated light. Here, we investigate experimentally and numerically the spot size of laser lighting dependent on the spot size of the incident laser light and the material properties of the wavelength converting phosphor material. We find numerically that the spot size of the generated white light is significantly influenced by the phosphor properties. The spot size of the white light determines the Ã©tendue and thereby the possibility to collect and shape the light. This has important implications in applications of laser lighting.

Original language	English
Title of host publication	Proceedings of SPIE
Number of pages	7
Volume	11302
Publisher	SPIE - International Society for Optical Engineering
Publication date	2020
Article number	113020B
DOIs	https://doi.org/10.1117/12.2542674
Publication status	Published - 2020
Event	SPIE OPTO 2020 - Moscone Convention Center, San Francisco, United States Duration: 1 Feb 2020 → 6 Feb 2020

Conference

Conference	SPIE OPTO 2020
Location	Moscone Convention Center
Country/Territory	United States
City	San Francisco
Period	01/02/2020 → 06/02/2020

Series	Proceedings of S P I E - International Society for Optical Engineering
ISSN	0277-786X

Keywords

Laser lighting
spot size
Phosphor materials

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10.1117/12.2542674

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SpotLASE: Energy Efficient Laser Enhancement of Stage Spotlights
Dam-Hansen, C., Thorseth, A., Jensen, O. B., Lindén, J. & Corell, D. D.
01/10/2017 → 31/03/2021
Project: Research

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Jensen, O. B., Krasnoshchoka, A., Hansen, A. K., Thorseth, A., Marti, D., Jian, X., & Petersen, P. M. (2020). Limitations to emission spot size in laser lighting. In Proceedings of SPIE (Vol. 11302). [113020B] SPIE - International Society for Optical Engineering. Proceedings of S P I E - International Society for Optical Engineering https://doi.org/10.1117/12.2542674

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title = "Limitations to emission spot size in laser lighting",

abstract = "Laser lighting is an emerging technology to generate high luminance lighting. To achieve high luminance or high luminous exitance, the light emitter must have high flux and small size simultaneously. When laser light is focused to a small spot size on the phosphor material, the two main limitations are saturation of the phosphor material and the spot size of the generated light. Here, we investigate experimentally and numerically the spot size of laser lighting dependent on the spot size of the incident laser light and the material properties of the wavelength converting phosphor material. We find numerically that the spot size of the generated white light is significantly influenced by the phosphor properties. The spot size of the white light determines the {\~A}{\textcopyright}tendue and thereby the possibility to collect and shape the light. This has important implications in applications of laser lighting.",

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year = "2020",

doi = "10.1117/12.2542674",

language = "English",

volume = "11302",

series = "Proceedings of S P I E - International Society for Optical Engineering",

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Jensen, OB, Krasnoshchoka, A, Hansen, AK , Thorseth, A, Marti, D, Jian, X & Petersen, PM 2020, Limitations to emission spot size in laser lighting. in Proceedings of SPIE. vol. 11302, 113020B, SPIE - International Society for Optical Engineering, Proceedings of S P I E - International Society for Optical Engineering, SPIE OPTO 2020, San Francisco, California, United States, 01/02/2020. https://doi.org/10.1117/12.2542674

Limitations to emission spot size in laser lighting. / Jensen, Ole Bjarlin; Krasnoshchoka, Anastasiia; Hansen, Anders Kragh ; Thorseth, Anders; Marti, Dominik; Jian, Xu; Petersen, Paul Michael.

Proceedings of SPIE. Vol. 11302 SPIE - International Society for Optical Engineering, 2020. 113020B (Proceedings of S P I E - International Society for Optical Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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T1 - Limitations to emission spot size in laser lighting

AU - Jensen, Ole Bjarlin

AU - Krasnoshchoka, Anastasiia

AU - Hansen, Anders Kragh

AU - Thorseth, Anders

AU - Marti, Dominik

AU - Jian, Xu

AU - Petersen, Paul Michael

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N2 - Laser lighting is an emerging technology to generate high luminance lighting. To achieve high luminance or high luminous exitance, the light emitter must have high flux and small size simultaneously. When laser light is focused to a small spot size on the phosphor material, the two main limitations are saturation of the phosphor material and the spot size of the generated light. Here, we investigate experimentally and numerically the spot size of laser lighting dependent on the spot size of the incident laser light and the material properties of the wavelength converting phosphor material. We find numerically that the spot size of the generated white light is significantly influenced by the phosphor properties. The spot size of the white light determines the Ã©tendue and thereby the possibility to collect and shape the light. This has important implications in applications of laser lighting.

AB - Laser lighting is an emerging technology to generate high luminance lighting. To achieve high luminance or high luminous exitance, the light emitter must have high flux and small size simultaneously. When laser light is focused to a small spot size on the phosphor material, the two main limitations are saturation of the phosphor material and the spot size of the generated light. Here, we investigate experimentally and numerically the spot size of laser lighting dependent on the spot size of the incident laser light and the material properties of the wavelength converting phosphor material. We find numerically that the spot size of the generated white light is significantly influenced by the phosphor properties. The spot size of the white light determines the Ã©tendue and thereby the possibility to collect and shape the light. This has important implications in applications of laser lighting.

KW - Laser lighting

KW - spot size

KW - Phosphor materials

U2 - 10.1117/12.2542674

DO - 10.1117/12.2542674

M3 - Article in proceedings

VL - 11302

T3 - Proceedings of S P I E - International Society for Optical Engineering

BT - Proceedings of SPIE

PB - SPIE - International Society for Optical Engineering

T2 - SPIE OPTO 2020

Y2 - 1 February 2020 through 6 February 2020

ER -

Limitations to emission spot size in laser lighting

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SpotLASE: Energy Efficient Laser Enhancement of Stage Spotlights

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