Speckle noise reduction on a laser projection display via a broadband green light source
Journal
Optics Express
Journal Volume
22
Journal Issue
3
Pages
3547-3556
Date Issued
2014
Author(s)
Yu, N.E.
Choi, J.W.
Kang, H.
Ko, D.-K.
Fu, S.-H.
Liou, J.-W.
Kung, A.H.
Choi, H.J.
Kim, B.J.
Cha, M.
Abstract
A broadband green light source was demonstrated using a tandem-poled lithium niobate (TPLN) crystal. The measured wavelength and temperature bandwidth were 6.5 nm and 100°C, respectively, spectral bandwidth was 36 times broader than the periodically poled case. Although the conversion efficiency was smaller than in the periodic case, the TPLN device had a good figure of merit owing to the extremely large bandwidth for wavelength and temperature. The developed broadband green light source exhibited speckle noise approximately one-seventh of that in the conventional approach for a laser projection display. © 2014 Optical Society of America.
Type
journal article