تقرير
An exciton-polariton laser based on biologically produced fluorescent protein
| العنوان: | An exciton-polariton laser based on biologically produced fluorescent protein |
|---|---|
| المؤلفون: | Dietrich, Christof P., Steude, Anja, Tropf, Laura, Schubert, Marcel, Kronenberg, Nils M., Ostermann, K., Höfling, Sven, Gather, Malte C. |
| المصدر: | Sci. Adv. 2, e1600666 (2016) |
| سنة النشر: | 2016 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Soft Condensed Matter, Physics - Optics |
| الوصف: | Under adequate conditions, cavity-polaritons form a macroscopic coherent quantum state, known as Bose-Einstein condensate (BEC). Compared to Wannier-Mott excitons in inorganic semiconductors, the localized Frenkel excitons in organic emitter materials show weaker interaction but stronger coupling, which recently enabled the first realization of BEC at room temperature. However, this required ultrafast optical pumping which limits the applications of organic BECs. Here, we demonstrate room-temperature BEC of cavity-polaritons in simple laminated microcavities filled with the biologically produced enhanced green fluorescent protein (eGFP). The unique molecular structure of eGFP prevents exciton annihilation even at high excitation densities, thus facilitating BEC under conventional nanosecond pumping. BEC is clearly evidenced by a distinct threshold, an interaction-induced blueshift of the condensate, long-range coherence and the presence of a second threshold at higher excitation density which is associated with the onset of photon lasing and results from thermalization of the exciton reservoir. Comment: 13(+8) pages, 4(+7) figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1126/sciadv.1600666 |
| URL الوصول: | http://arxiv.org/abs/1601.06983 |
| رقم الأكسشن: | edsarx.1601.06983 |
| قاعدة البيانات: | arXiv |
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