High brightness illumination based on laser light diffusion with mie scattering

Name: High brightness illumination based on laser light diffusion with mie scattering
Author: Azarifar, Mohammad, Cengiz, Ceren, Ocaksönmez, Kerem, Onal, A., Nizamoglu, S., Arık, Mehmet

İsim	High brightness illumination based on laser light diffusion with mie scattering
Yazar	Azarifar, Mohammad, Cengiz, Ceren, Ocaksönmez, Kerem, Onal, A., Nizamoglu, S., Arık, Mehmet
Basım Tarihi:	2022
Basım Yeri	- ASME
Konu	Diode lasers, Illumination, Laser diffusion, Mie scattering
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	978-079188655-7
Kayıt Numarası	fac2f9d8-2305-496c-81e2-33d3d12eba1f
Lokasyon	Mechanical Engineering
Tarih	2022
Notlar	TÜBİTAK
Örnek Metin	Limited luminous flux per wafer area of light emitting diodes (LEDs) for high power solid state illumination causes some packaging real estate issues. This problem can be tackled with laser diodes (LDs). At high current densities, LDs offer higher efficiency, however with very low etendue and divergent angle. This significantly increases the complexity of color conversion for white light generation. Concentrated light can carbonize the color conversion unit and have high speckle contrast. These problems can be addressed by efficient diffusion of the laser beam and this paper is aimed to introduce the first laser diffusion system based on TiO2 Mie particles. Based on a series of ray tracing simulations, an idealized cost-effective system is modeled and results showed an almost lossless diffusion with a guiding system based on reflection resulting in an almost uniform irradiance level with only 17% power loss. Furthermore, offered design can reduce the challenges for the compact packaging of white LDs by eliminating the heat sink for color conversion coating and enabling a safe light intensity for utilizing quantum dots for color engineering.
DOI	10.1115/IPACK2022-97220

Kaynağa git Özyeğin Üniversitesi

Aramaya Dön

Özyeğin Üniversitesi

Kaynağa git

High brightness illumination based on laser light diffusion with mie scattering

Yazar Azarifar, Mohammad, Cengiz, Ceren, Ocaksönmez, Kerem, Onal, A., Nizamoglu, S., Arık, Mehmet

Basım Tarihi 2022

Basım Yeri - ASME

Konu Diode lasers, Illumination, Laser diffusion, Mie scattering

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 978-079188655-7

Kayıt Numarası fac2f9d8-2305-496c-81e2-33d3d12eba1f

Lokasyon Mechanical Engineering

Tarih 2022

Notlar TÜBİTAK

Örnek Metin Limited luminous flux per wafer area of light emitting diodes (LEDs) for high power solid state illumination causes some packaging real estate issues. This problem can be tackled with laser diodes (LDs). At high current densities, LDs offer higher efficiency, however with very low etendue and divergent angle. This significantly increases the complexity of color conversion for white light generation. Concentrated light can carbonize the color conversion unit and have high speckle contrast. These problems can be addressed by efficient diffusion of the laser beam and this paper is aimed to introduce the first laser diffusion system based on TiO2 Mie particles. Based on a series of ray tracing simulations, an idealized cost-effective system is modeled and results showed an almost lossless diffusion with a guiding system based on reflection resulting in an almost uniform irradiance level with only 17% power loss. Furthermore, offered design can reduce the challenges for the compact packaging of white LDs by eliminating the heat sink for color conversion coating and enabling a safe light intensity for utilizing quantum dots for color engineering.

DOI 10.1115/IPACK2022-97220