Broadband Phosphor Conversion LED Source for Stroboscopic White Light Interferometry

Tutkimustuotos: ArtikkelijulkaisuKonferenssiartikkeliTieteellinenvertaisarvioitu

Kuvaus

We report on building a broadband LED light source for stroboscopic white light interferometry. We chose phosphor types, mass ratios, and encapsulant, to tailor the necessary emission spectrum. Based on known emission spectra, we mixed combinations of blue, cyan, yellow, and red down-conversion phosphors. The phosphor composite was excited with a modified UV LED (365 nm). UV provides primary excitation of blue phosphor BAM (BaMgAl10O17:Eu). The emission (≈ 450 nm) of the blue phosphor provides secondary excitation of longer wavelength phosphors (YAG (yttrium aluminum garnite), strontium-barium silicate, and sulfoselenide). The effective spectrum's FWHM was 244±1.5 nm; spectral drop was 14%. The pulse width was 2.2 μs when the LED was driven with 14 A. We used the source for static MEMS measurements in a SWLI system. The obtained SWLI interferogram features 883 nm FWHM and low side lobes.
Alkuperäiskielienglanti
LehtiProceedings of SPIE, the International Society for Optical Engineering
Vuosikerta8430
Sivut843019
ISSN0277-786X
DOI - pysyväislinkit
TilaJulkaistu - 2012
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaSPIE Photonics Europe - Brussels, Belgia
Kesto: 1 tammikuuta 1800 → …

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title = "Broadband Phosphor Conversion LED Source for Stroboscopic White Light Interferometry",
abstract = "We report on building a broadband LED light source for stroboscopic white light interferometry. We chose phosphor types, mass ratios, and encapsulant, to tailor the necessary emission spectrum. Based on known emission spectra, we mixed combinations of blue, cyan, yellow, and red down-conversion phosphors. The phosphor composite was excited with a modified UV LED (365 nm). UV provides primary excitation of blue phosphor BAM (BaMgAl10O17:Eu). The emission (≈ 450 nm) of the blue phosphor provides secondary excitation of longer wavelength phosphors (YAG (yttrium aluminum garnite), strontium-barium silicate, and sulfoselenide). The effective spectrum's FWHM was 244±1.5 nm; spectral drop was 14{\%}. The pulse width was 2.2 μs when the LED was driven with 14 A. We used the source for static MEMS measurements in a SWLI system. The obtained SWLI interferogram features 883 nm FWHM and low side lobes.",
keywords = "114 Physical sciences",
author = "Ben W{\"a}lchli and Ville Heikkinen and Tor Paulin and Kassamakov, {Ivan Vladislavov} and Edward Haeggstr{\"o}m",
note = "Volume: 8430 Host publication title: Optical Micro- and Nanometrology Proceeding volume: IV",
year = "2012",
doi = "10.1117/12.922114",
language = "English",
volume = "8430",
pages = "843019",
journal = "Proceedings of SPIE, the International Society for Optical Engineering",
issn = "0277-786X",
publisher = "SPIE, The International Society for Optical Engineering",

}

Broadband Phosphor Conversion LED Source for Stroboscopic White Light Interferometry. / Wälchli, Ben; Heikkinen, Ville; Paulin, Tor; Kassamakov, Ivan Vladislavov; Haeggström, Edward.

julkaisussa: Proceedings of SPIE, the International Society for Optical Engineering, Vuosikerta 8430, 2012, s. 843019.

Tutkimustuotos: ArtikkelijulkaisuKonferenssiartikkeliTieteellinenvertaisarvioitu

TY - JOUR

T1 - Broadband Phosphor Conversion LED Source for Stroboscopic White Light Interferometry

AU - Wälchli, Ben

AU - Heikkinen, Ville

AU - Paulin, Tor

AU - Kassamakov, Ivan Vladislavov

AU - Haeggström, Edward

N1 - Volume: 8430 Host publication title: Optical Micro- and Nanometrology Proceeding volume: IV

PY - 2012

Y1 - 2012

N2 - We report on building a broadband LED light source for stroboscopic white light interferometry. We chose phosphor types, mass ratios, and encapsulant, to tailor the necessary emission spectrum. Based on known emission spectra, we mixed combinations of blue, cyan, yellow, and red down-conversion phosphors. The phosphor composite was excited with a modified UV LED (365 nm). UV provides primary excitation of blue phosphor BAM (BaMgAl10O17:Eu). The emission (≈ 450 nm) of the blue phosphor provides secondary excitation of longer wavelength phosphors (YAG (yttrium aluminum garnite), strontium-barium silicate, and sulfoselenide). The effective spectrum's FWHM was 244±1.5 nm; spectral drop was 14%. The pulse width was 2.2 μs when the LED was driven with 14 A. We used the source for static MEMS measurements in a SWLI system. The obtained SWLI interferogram features 883 nm FWHM and low side lobes.

AB - We report on building a broadband LED light source for stroboscopic white light interferometry. We chose phosphor types, mass ratios, and encapsulant, to tailor the necessary emission spectrum. Based on known emission spectra, we mixed combinations of blue, cyan, yellow, and red down-conversion phosphors. The phosphor composite was excited with a modified UV LED (365 nm). UV provides primary excitation of blue phosphor BAM (BaMgAl10O17:Eu). The emission (≈ 450 nm) of the blue phosphor provides secondary excitation of longer wavelength phosphors (YAG (yttrium aluminum garnite), strontium-barium silicate, and sulfoselenide). The effective spectrum's FWHM was 244±1.5 nm; spectral drop was 14%. The pulse width was 2.2 μs when the LED was driven with 14 A. We used the source for static MEMS measurements in a SWLI system. The obtained SWLI interferogram features 883 nm FWHM and low side lobes.

KW - 114 Physical sciences

U2 - 10.1117/12.922114

DO - 10.1117/12.922114

M3 - Conference article

VL - 8430

SP - 843019

JO - Proceedings of SPIE, the International Society for Optical Engineering

JF - Proceedings of SPIE, the International Society for Optical Engineering

SN - 0277-786X

ER -