%0 Journal Article %1 celebrano2015emission %A Celebrano, Michele %A Baselli, Milena %A Bollani, Monica %A Frigerio, Jacopo %A Bahgat Shehata, Andrea %A Della Frera, Adriano %A Tosi, Alberto %A Farina, Andrea %A Pezzoli, Fabio %A Osmond, Johann %A Wu, Xiaofei %A Hecht, Bert %A Sordan, Roman %A Chrastina, Daniel %A Isella, Giovanni %A Duò, Lamberto %A Finazzi, Marco %A Biagioni, Paolo %D 2015 %J ACS Photonics %K SEM experiment nano-optics waveguides %N 1 %P 53-59 %R 10.1021/ph500432k %T Emission Engineering in Germanium Nanoresonators %V 2 %X We experimentally investigate the smallest germanium waveguide cavity resonators on silicon that can be designed to work around 1.55 μm wavelength and observe an almost 30-fold enhancement in the collected spontaneous emission per unit volume when compared to a continuous germanium film of the same thickness. The enhancement is due to an effective combination of (i) excitation enhancement at the pump wavelength, (ii) emission enhancement (Purcell effect) at the emission wavelength, and (iii) effective beaming by the nanoresonators, which act as optical antennas to enhance the radiation efficiency. Our results set a basis for the understanding and engineering of light emission based on subwavelength, CMOS-compatible nanostructures operating at telecommunication wavelengths.

@article{celebrano2015emission, abstract = {We experimentally investigate the smallest germanium waveguide cavity resonators on silicon that can be designed to work around 1.55 μm wavelength and observe an almost 30-fold enhancement in the collected spontaneous emission per unit volume when compared to a continuous germanium film of the same thickness. The enhancement is due to an effective combination of (i) excitation enhancement at the pump wavelength, (ii) emission enhancement (Purcell effect) at the emission wavelength, and (iii) effective beaming by the nanoresonators, which act as optical antennas to enhance the radiation efficiency. Our results set a basis for the understanding and engineering of light emission based on subwavelength, CMOS-compatible nanostructures operating at telecommunication wavelengths.}, added-at = {2020-02-24T09:48:55.000+0100}, author = {Celebrano, Michele and Baselli, Milena and Bollani, Monica and Frigerio, Jacopo and Bahgat Shehata, Andrea and Della Frera, Adriano and Tosi, Alberto and Farina, Andrea and Pezzoli, Fabio and Osmond, Johann and Wu, Xiaofei and Hecht, Bert and Sordan, Roman and Chrastina, Daniel and Isella, Giovanni and Duò, Lamberto and Finazzi, Marco and Biagioni, Paolo}, biburl = {https://www.bibsonomy.org/bibtex/2b2f8053c3531d992c52847f9de8d9de9/ep5optics}, day = 21, doi = {10.1021/ph500432k}, file = {ACS Full Text Snapshot:C\:\\Users\\scherzad\\Zotero\\storage\\X64WIVCR\\ph500432k.html:text/html;Celebrano et al. - 2015 - Emission Engineering in Germanium Nanoresonators.pdf:C\:\\Users\\scherzad\\Zotero\\storage\\6W8LJ7RA\\Celebrano et al. - 2015 - Emission Engineering in Germanium Nanoresonators.pdf:application/pdf}, interhash = {bf03f6d33d95ae1e48ebd86b834646c9}, intrahash = {b2f8053c3531d992c52847f9de8d9de9}, journal = {ACS Photonics}, keywords = {SEM experiment nano-optics waveguides}, month = {01}, number = 1, pages = {53-59}, timestamp = {2020-02-24T09:48:55.000+0100}, title = {Emission Engineering in Germanium Nanoresonators}, urldate = {2020-02-24}, volume = 2, year = 2015 }