Transcending the replacement paradigm of solid-state lighting.

Opt Express 2008 Dec;16(26):21835-42

Future Chips Constellation, Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, USA.

The field of photonics starts with the efficient generation of light. The generation of efficient yet highly controllable light can indeed be accomplished with light-emitting diodes (LEDs), which are, in principle, capable of generating white light with a 20 times greater efficiency than conventional light bulbs. Deployed on a global scale to replace conventional sources, such solid-state light sources will result in enormous benefits that, over a period of 10 years, include (1) gigantic energy savings of 1.9 x 1020 joule, (2) a very substantial reduction in global-warming CO2 emissions, (3) a strong reduction in the emission of pollutants such as acid-rain-causing SO2, mercury (Hg), and uranium (U), and (4) financial savings exceeding a trillion (10(12)) US$. These benefits can be accomplished by the "replacement paradigm" in which conventional light sources are replaced by more energy efficient, more durable, and non-toxic light sources. However, it will be shown that solid-state light sources can go beyond the replacement paradigm, by providing new capabilities including the control of spectrum, color temperature, polarization, temporal modulation, and spatial emission pattern. We will show that such future, "smart" light sources, can harness the huge potential of LEDs by offering multi-dimensional controllability that will enhance the functionality and performance of light sources in a wide range of applications. These applications include optical microscopy, imaging, display technologies, communications, networking, and transportation systems.

Download full-text PDF

Source
http://dx.doi.org/10.1364/oe.16.021835DOI Listing
December 2008
1 Read

Publication Analysis

Top Keywords

light sources
24
light
10
conventional light
8
sources will
8
solid-state light
8
replacement paradigm
8
sources
7
emission pollutants
4
reduction emission
4
strong reduction
4
will enhance
4
emissions strong
4
uranium financial
4
controllability will
4
mercury uranium
4
acid-rain-causing so2
4
so2 mercury
4
multi-dimensional controllability
4
co2 emissions
4
pollutants acid-rain-causing
4

References

(Supplied by CrossRef)

Chhajed et al.
J. Appl. Phys. 2005

Kim et al.
Appl. Phys. Lett. 2007

Schubert et al.
Appl. Phys. Lett. 2008

Schubert et al.
Rep. Prog. Phys. 2006

Schubert et al.
Science 2005

Similar Publications