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Author Fleming, J. G. ♦ Lin, S.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
File Format PDF
Language English
Subject Keyword MATERIALS SCIENCE ♦ Crystal Growth Methods ♦ Silicon ♦ Microstructure ♦ Superlattices ♦ Optical Properties ♦ Optical Equipment ♦ Energy Gap
Abstract The search for a photonic crystal to confine optical waves in all three dimensions (3D) has proven to be a formidable task. It evolves from an early theoretical suggestion [1,2], a brief skepticism [3-5] and triumph in developing the mm-wave [6-8] and infrared 3D photonic crystals [9]. Yet, the challenge remains, as the ultimate goal for optoelectronic applications is to realize a 3D crystal at X=1.5 pm communication wavelengths. Operating at visible and near infrared wavelengths, X=1-2 pm, a photonic crystal may enhance the spontaneous emission rate [1, 10] and give rise to a semiconductor lasers with a zero lasing threshold[11, 12]. Another important application is optically switching, routing and interconnecting light [13,14] with an ultrafast transmission speed of terabits per second. A photonic crystal may also serve as a platform for integrating an all-optical circuitry with multiple photonic components, such as waveguides and switches, built on one chip [15]. In this Letter, we report on the successful fabrication of a working 3D crystal operating at optical L The minimum feature size of the 3D structure is 180 nanometers. The 3D crystal is free from defects over the entire 6-inch silicon wafer and has an absolute photonic band gap centered at A.-1.6 pm. Our data provides the first conclusive evidence for the existence of a full 3D photonic band gap in optical A. This development will pave the way to tinier, cheaper, more effective waveguides, optical switches and lasers.
Educational Use Research
Learning Resource Type Article
Publisher Date 1998-12-17
Publisher Department Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
Publisher Place United States
Journal Nature
Technical Publication No. SAND98-2804J
Organization Sandia National Laboratories, Albuquerque, NM, and Livermore, CA


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