Low-threshold blue lasing from fully transparent porous silicon monolithic microcavities infiltrated with a polyfluorene derivative

Valentina Robbiano; Giuseppe M. Paternò; Antonio A. La Mattina; Silvia G. Motti; Guglielmo Lanzani; Francesco Scotognella; Giuseppe Barillaro

doi:10.1117/12.2508568

7 March 2019 Low-threshold blue lasing from fully transparent porous silicon monolithic microcavities infiltrated with a polyfluorene derivative

Valentina Robbiano, Giuseppe M. Paternò, Antonio A. La Mattina, Silvia G. Motti, Guglielmo Lanzani, Francesco Scotognella, Giuseppe Barillaro

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Proceedings Volume 10896, Solid State Lasers XXVIII: Technology and Devices; 108960B (2019) https://doi.org/10.1117/12.2508568
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

Here we report on low-threshold blue lasing from fully-transparent nanostructured porous silicon (PSi) monolithic microcavities (MCs) infiltrated with a polyfluorene derivative, namely poly(9,9-di-n-octylfluorenyl-2,7-diyl) (PFO). Single-mode blue lasing is achieved at the resonance wavelength of 466 nm, with line width of ~1.3 nm, lasing threshold as low as 5 nJ (i.e. fluence of 15 μJ/cm²), and good stability under operation (i.e. 40% decay in intensity after about 7 ×10⁵ pulses at 50 nJ).

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Valentina Robbiano, Giuseppe M. Paternò, Antonio A. La Mattina, Silvia G. Motti, Guglielmo Lanzani, Francesco Scotognella, and Giuseppe Barillaro "Low-threshold blue lasing from fully transparent porous silicon monolithic microcavities infiltrated with a polyfluorene derivative", Proc. SPIE 10896, Solid State Lasers XXVIII: Technology and Devices, 108960B (7 March 2019); https://doi.org/10.1117/12.2508568

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