Ultrafast optical modulation of polymer nano-structured lasers

Stefano Perissinotto; Marco Carvelli; Margherita Zavelani-Rossi; Guglielmo Lanzani; Chiara Bertarelli; Giuseppe Zerbi; Marco Salerno; Luca Troisi; Giuseppe Gigli

doi:10.1117/12.795949

2 September 2008 Ultrafast optical modulation of polymer nano-structured lasers

Stefano Perissinotto, Marco Carvelli, Margherita Zavelani-Rossi, Guglielmo Lanzani, Chiara Bertarelli, Giuseppe Zerbi, Marco Salerno, Luca Troisi, Giuseppe Gigli

Author Affiliations +

Proceedings Volume 7051, Organic Light Emitting Materials and Devices XII; 70511F (2008) https://doi.org/10.1117/12.795949
Event: Photonic Devices + Applications, 2008, San Diego, California, United States

Abstract

In this work modulation of laser emission from polymer nano-structured lasers was explored through three different optical techniques. We show all optical control of polymer distributed feedback lasers based on polyfluorenes (PFO and F8BT) by applying a gating pulse, which completely switch-off emission in the sub-ps time scale. The switching mechanism is assigned to photo-injection of charge carriers induced by the gate transition. This is a resonant non-linear process, that might work at high bit-rate, paving the way toward plastic, large-scale integrated, ultrafast optical logic. New opportunities may also be offered by two other techniques: Two-photon two-color pumping allows lasing action only in presence of two different pulses, one in the visible and one in the IR, resonant with the second telecommunication window. This may allow to convert telecommunication signal from a fiber to visible range and thus to Plastic Optical Fibers for organic photonics. Another technique we explored uses a blend of F8BT and a photochromic material, (1,2-bis-(5-phenyl-2-methyl-3-tienyl) perfluocyclopentene))(C4). With a UV pulse we are able to change C4 structure, thus overlapping its absorption spectrum with F8BT emission and modulating yellow ASE emission.

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Stefano Perissinotto, Marco Carvelli, Margherita Zavelani-Rossi, Guglielmo Lanzani, Chiara Bertarelli, Giuseppe Zerbi, Marco Salerno, Luca Troisi, and Giuseppe Gigli "Ultrafast optical modulation of polymer nano-structured lasers", Proc. SPIE 7051, Organic Light Emitting Materials and Devices XII, 70511F (2 September 2008); https://doi.org/10.1117/12.795949

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KEYWORDS

Polymers

Absorption

Modulation

Switching

Visible radiation

Ultraviolet radiation

Telecommunications

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