Coloquio del 16/03/2017-a

Wrapping light around a hair

Eric Mazur

Harvard University

Lugar:

Auditorio de Física PUCP

(Av. Universitaria cdra. 18, San Miguel, Lima)

Fecha y hora:

Jueves 16/03/2017, 5:15 p.m.

Can light be guided by a fiber whose diameter is much smaller than the wavelength of the light? Can we mold the flow of light on the micrometer scale so it wraps, say, around a hair? Until recently the answer to these questions was "no". We developed a technique for drawing long, free-standing silica wires with diameters down to 50 nm that have a surface smoothness at the atomic level and a high uniformity of diameter. Light can be launched into these silica nanowires by optical evanescent coupling and the wires allow low-loss single-mode operation. They can be bent sharply, making it possible to control the propagation of light around micrometer-sized corners. The nanowires have applications in microphotonic devices for optical processing and environmental sensing. (Click aquí para ver el afiche.)

Ingreso libre. Habrá café y galletas.

Informes: coloquios@fisica.pucp.edu.pe