Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Effects of phosphor-based LEDs on vertical scanning interferometry

Not Accessible

Your library or personal account may give you access

Abstract

High-power phosphor-based LEDs are replacing conventional white-light sources for vertical scanning interferometry, but the spectrum of the phosphor-based LED is different from that of the conventional light source. The phosphor-based LED has two peaks in its spectrum, while the conventional light source has only one peak in the Gaussian distribution. In this Letter, we investigate the effects of phosphor-based LEDs on vertical scanning interferometry. Our result shows that the use of a phosphor-based LED changes the fringe contrast function significantly, such that measurement repeatability decreases. We propose and demonstrate that a constraint on the input to the existing reconstruction algorithm improves the repeatability of the vertical scanning interferometer with a phosphor-based LED.

© 2010 Optical Society of America

Full Article  |  PDF Article
More Like This
Harnessing spectral property of dual wavelength white LED to improve vertical scanning interferometry

Wee Keat Chong, Xiang Li, and Yeng Chai Soh
Appl. Opt. 52(19) 4652-4662 (2013)

Computationally efficient signal modeling for vertical scanning interferometry

Wee Keat Chong, Xiang Li, and Sardha Wijesoma
Appl. Opt. 49(26) 4990-4994 (2010)

Stroboscopic scanning white light interferometry at 2.7 MHz with 1.6 µm coherence length using a non-phosphor LED source

Ville Heikkinen, Ivan Kassamakov, Tor Paulin, Anton Nolvi, and Edward Hæggström
Opt. Express 21(5) 5247-5254 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved