The authors report on the fabrication and characterization of an organic distributed feedback laser operating in the near infrared. The device, fabricated by room-temperature nanoimprint lithography, is based on an organic dye hosted by a poly(methylmethacrylate) matrix. The laser emission from an imprinted 620 nm period grating is peaked at 918 nm with a linewidth of 8 A and a pumping threshold of 37 mu J/cm(2), and it is strongly polarized with a polarization contrast as high as 0.99. The lasing wavelength is tunable in the range of 890-930 nm by adjusting the grating period, and the operational lifetime is up to 6x10(3) excitation pulses in vacuum environment. These results demonstrate the possibility of realizing imprinted organic-based near-infrared lasers, thus approaching spectral regions relevant for optical communication applications. (c) 2006 American Institute of Physics
Near-infrared imprinted distributed feedback lasers
PISIGNANO, DARIO
2006
Abstract
The authors report on the fabrication and characterization of an organic distributed feedback laser operating in the near infrared. The device, fabricated by room-temperature nanoimprint lithography, is based on an organic dye hosted by a poly(methylmethacrylate) matrix. The laser emission from an imprinted 620 nm period grating is peaked at 918 nm with a linewidth of 8 A and a pumping threshold of 37 mu J/cm(2), and it is strongly polarized with a polarization contrast as high as 0.99. The lasing wavelength is tunable in the range of 890-930 nm by adjusting the grating period, and the operational lifetime is up to 6x10(3) excitation pulses in vacuum environment. These results demonstrate the possibility of realizing imprinted organic-based near-infrared lasers, thus approaching spectral regions relevant for optical communication applications. (c) 2006 American Institute of PhysicsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
