[{"doi":"10.1021/acs.nanolett.6b03513","volume":17,"author":[{"last_name":"Ruppert","full_name":"Ruppert, Claudia","first_name":"Claudia"},{"first_name":"Alexey","last_name":"Chernikov","full_name":"Chernikov, Alexey"},{"last_name":"Hill","full_name":"Hill, Heather M.","first_name":"Heather M."},{"first_name":"Albert F.","full_name":"Rigosi, Albert F.","last_name":"Rigosi"},{"last_name":"Heinz","full_name":"Heinz, Tony F.","first_name":"Tony F."}],"date_updated":"2022-01-06T07:03:11Z","intvolume":"        17","page":"644-651","citation":{"short":"C. Ruppert, A. Chernikov, H.M. Hill, A.F. Rigosi, T.F. Heinz, Nano Letters 17 (2017) 644–651.","mla":"Ruppert, Claudia, et al. “The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation.” <i>Nano Letters</i>, vol. 17, no. 2, American Chemical Society (ACS), 2017, pp. 644–51, doi:<a href=\"https://doi.org/10.1021/acs.nanolett.6b03513\">10.1021/acs.nanolett.6b03513</a>.","bibtex":"@article{Ruppert_Chernikov_Hill_Rigosi_Heinz_2017, title={The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation}, volume={17}, DOI={<a href=\"https://doi.org/10.1021/acs.nanolett.6b03513\">10.1021/acs.nanolett.6b03513</a>}, number={2}, journal={Nano Letters}, publisher={American Chemical Society (ACS)}, author={Ruppert, Claudia and Chernikov, Alexey and Hill, Heather M. and Rigosi, Albert F. and Heinz, Tony F.}, year={2017}, pages={644–651} }","apa":"Ruppert, C., Chernikov, A., Hill, H. M., Rigosi, A. F., &#38; Heinz, T. F. (2017). The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation. <i>Nano Letters</i>, <i>17</i>(2), 644–651. <a href=\"https://doi.org/10.1021/acs.nanolett.6b03513\">https://doi.org/10.1021/acs.nanolett.6b03513</a>","ama":"Ruppert C, Chernikov A, Hill HM, Rigosi AF, Heinz TF. The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation. <i>Nano Letters</i>. 2017;17(2):644-651. doi:<a href=\"https://doi.org/10.1021/acs.nanolett.6b03513\">10.1021/acs.nanolett.6b03513</a>","ieee":"C. Ruppert, A. Chernikov, H. M. Hill, A. F. Rigosi, and T. F. Heinz, “The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation,” <i>Nano Letters</i>, vol. 17, no. 2, pp. 644–651, 2017.","chicago":"Ruppert, Claudia, Alexey Chernikov, Heather M. Hill, Albert F. Rigosi, and Tony F. Heinz. “The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation.” <i>Nano Letters</i> 17, no. 2 (2017): 644–51. <a href=\"https://doi.org/10.1021/acs.nanolett.6b03513\">https://doi.org/10.1021/acs.nanolett.6b03513</a>."},"publication_identifier":{"issn":["1530-6984","1530-6992"]},"publication_status":"published","article_type":"original","department":[{"_id":"230"}],"user_id":"49428","_id":"6542","project":[{"_id":"53","name":"TRR 142"},{"name":"TRR 142 - Project Area A","_id":"54"},{"_id":"58","name":"TRR 142 - Subproject A1"}],"status":"public","type":"journal_article","title":"The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation","date_created":"2019-01-09T10:00:23Z","publisher":"American Chemical Society (ACS)","year":"2017","issue":"2","language":[{"iso":"eng"}],"keyword":["Atomically thin 2D materials","carrier and phonon dynamics","ultrafast spectroscopy"],"abstract":[{"lang":"eng","text":"Transient changes of the optical response of WS2 monolayers are studied by femtosecond broadband pump–probe spectroscopy. Time-dependent absorption spectra are analyzed by tracking the line width broadening, bleaching, and energy shift of the main exciton resonance as a function of time delay after the excitation. Two main sources for the pump-induced changes of the optical response are identified. Specifically, we find an interplay between modifications induced by many-body interactions from photoexcited carriers and by the subsequent transfer of the excitation to the phonon system followed by cooling of the material through the heat transfer to the substrate."}],"publication":"Nano Letters"},{"issue":"11","citation":{"chicago":"Mundry, J., J. Lohrenz, and M. Betz. “Tunable Femtosecond Near-IR Source by Pumping an OPA Directly with a 90 MHz Yb:Fiber Source.” <i>Applied Optics</i> 56, no. 11 (2017): 3104–8. <a href=\"https://doi.org/10.1364/AO.56.003104\">https://doi.org/10.1364/AO.56.003104</a>.","ieee":"J. Mundry, J. Lohrenz, and M. Betz, “Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source,” <i>Applied Optics</i>, vol. 56, no. 11, pp. 3104–3108, 2017.","ama":"Mundry J, Lohrenz J, Betz M. Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source. <i>Applied Optics</i>. 2017;56(11):3104-3108. doi:<a href=\"https://doi.org/10.1364/AO.56.003104\">10.1364/AO.56.003104</a>","short":"J. Mundry, J. Lohrenz, M. Betz, Applied Optics 56 (2017) 3104–3108.","mla":"Mundry, J., et al. “Tunable Femtosecond Near-IR Source by Pumping an OPA Directly with a 90 MHz Yb:Fiber Source.” <i>Applied Optics</i>, vol. 56, no. 11, OSA, 2017, pp. 3104–08, doi:<a href=\"https://doi.org/10.1364/AO.56.003104\">10.1364/AO.56.003104</a>.","bibtex":"@article{Mundry_Lohrenz_Betz_2017, title={Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source}, volume={56}, DOI={<a href=\"https://doi.org/10.1364/AO.56.003104\">10.1364/AO.56.003104</a>}, number={11}, journal={Applied Optics}, publisher={OSA}, author={Mundry, J. and Lohrenz, J. and Betz, M.}, year={2017}, pages={3104–3108} }","apa":"Mundry, J., Lohrenz, J., &#38; Betz, M. (2017). Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source. <i>Applied Optics</i>, <i>56</i>(11), 3104–3108. <a href=\"https://doi.org/10.1364/AO.56.003104\">https://doi.org/10.1364/AO.56.003104</a>"},"page":"3104-3108","intvolume":"        56","year":"2017","date_created":"2019-01-09T10:06:44Z","author":[{"first_name":"J.","full_name":"Mundry, J.","last_name":"Mundry"},{"first_name":"J.","full_name":"Lohrenz, J.","last_name":"Lohrenz"},{"full_name":"Betz, M.","last_name":"Betz","first_name":"M."}],"volume":56,"date_updated":"2022-01-06T07:03:11Z","publisher":"OSA","doi":"10.1364/AO.56.003104","title":"Tunable femtosecond near-IR source by pumping an OPA directly with a 90 MHz Yb:fiber source","type":"journal_article","publication":"Applied Optics","status":"public","abstract":[{"text":"Up to 400 mW of near-IR (1370-1500 nm) femtosecond pulses are generated from an optical parametric amplifier directly driven by a Yb:fiber oscillator delivering 100\\&\\#x00A0;fs pulses at 1036 nm. The process is seeded by a stable supercontinuum obtained from a photonic crystal fiber. We use a single pass through a 3 mm, magnesium oxide-doped, periodically poled LiNbO3 downconversion crystal to produce a near-IR pulse train with a remarkable power stability of 1.4 % (RMS) during one hour. Tuning is achieved by the temperature and the poling period of the nonlinear crystal.","lang":"eng"}],"user_id":"49428","department":[{"_id":"230"}],"project":[{"name":"TRR 142","_id":"53"},{"_id":"54","name":"TRR 142 - Project Area A"},{"_id":"58","name":"TRR 142 - Subproject A1"}],"_id":"6543","language":[{"iso":"eng"}],"article_type":"original","keyword":["Infrared and far-infrared lasers","Ultrafast lasers","Nonlinear optics","parametric processes","Parametric oscillators and amplifiers","Femtosecond pulses","Fiber lasers","Fused silica","Laser systems","Photonic crystal fibers","Pulse propagation"]}]