Authors discuss what makes a super course insidehighered.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from insidehighered.com Daily Mail and Mail on Sunday newspapers.
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IMAGE: a, Zero-index PhC slab without BICs. A photonic dipole mode forming the zero index results in out-of-plane radiation, dramatically increasing the propagation loss of the material. b, Zero-index PhC slab. view more
Credit: by Tian Dong, Jiujiu Liang, Philip Camayd-Muñoz, Yueyang Liu, Haoning Tang, Shota Kita, Peipei Chen, Xiaojun Wu, Weiguo Chu, Eric Mazur, and Yang Li
A refractive index of zero induces a wave vector with zero amplitude and undefined direction. Therefore, light propagating inside a zero-index medium does not accumulate any spatial phase advance, resulting in perfect spatial coherence. Such coherence brings several potential applications, including arbitrarily shaped waveguides, phase-mismatch-free nonlinear propagation, large-area single-mode lasers, and extended super radiance. A promising platform to achieve these applications is an integrated Dirac-cone material that features an impedance-matched zero index. However, although this pla
CAFC Finds District Court Erred, Abused Discretion in Declining to Transfer Ownership of Foreign Patents ipwatchdog.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from ipwatchdog.com Daily Mail and Mail on Sunday newspapers.