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| 1 | Ultrafast response of harmonic modelocked THz lasers显示文摘The use of fundamental modelocking to generate short terahertz(THz)pulses and THz frequency combs from semiconductor lasers has become a routine affair,using quantum cascade lasers(QCLs)as a gain medium.However,unlike classic laser diodes,no demonstrations of harmonic modelocking,active or passive,have been shown in THz QCLs,where multiple pulses per round trip are generated when the laser is modulated at the harmonics of the cavity’s fundamental round-trip frequency.Here,using time-resolved THz techniques,we show for the first time harmonic injection and mode-locking in which THz QCLs are modulated at the harmonics of the round-trip frequency.We demonstrate the generation of the harmonic electrical beatnote within a QCL,its injection locking to an active modulation and its direct translation to harmonic pulse generation using the unique ultrafast nature of our approach.Finally,we show indications of self-starting harmonic emission,i.e.,without external modulation,where the QCL operates exclusively on a harmonic(up to its 15th harmonic)of the round-trip frequency.This behaviour is supported by time-resolved simulations of induced gain and loss in the system and shows the importance of the electronic,as well as photonic,nature of QCLs.These results open up the prospect of passive harmonic modelocking and THz pulse generation,as well as the generation of low-noise microwave generation in the hundreds of GHz region. | Feihu Wang Valentino Pistore Michael Riesch Hanond Nong Pierre-Baptiste Vigneron Raffaele Colombelli Olivier Parillaud Juliette Mangeney Jerome Tignon Christian Jirauschek Sukhdeep S.Dhillon | 2020 | Light(Science & Applications)2020，9，1： | 3 |
| 2 | Low threshold THz QC laser with thin core regions 显示文摘 | CHASSAGNEUX Y PALOMO J COLOMBELLI R | 2007 | Electronics Letters2007，43，5： | 1 |
| 3 | Quantum cascade surface-emitting photonic crystal laser显示文摘 | COLOMBELLI R SRINIVASAN K TROCCOLI M | 2003 | Science2003，302，： | 1 |
| 4 | Quantum Cascade Surface-Emitting Photonic Crystal Laser显示文摘 | Kartik Srinivasan Mariano Troccoli | 2003 | Science2003，302，5649： | 1 |
| 5 | Nest height, nest conceal-ment, and predator type predict nest predation in superb lairy -wrens ( Malurus cyaneus ) 显示文摘 | Colombelli - N6grel D Kleindorfer S | 2009 | Ecological Research2009，24，4： | 1 |
| 6 | Semiconductor surface plasmon sources显示文摘 | Babuty A Bousseksou A Tetienne J P Doyen I M Sirtori C Beaudoin G Sagnes I De Wilde Y Colombelli R | | 0，，22： | 1 |
| 7 | On Finn Growth and Innova- tion-Some New Empirical Perspectives Using French CIS, 1992- 2004显示文摘 | Le Bas C Haned N Colombelli A | 2011 | 2011，，： | 1 |
| 8 | Quantum Cascade Surface-Emitting Photonic Crystal Laser显示文摘 | Raffaele Colombelli Kartik Srinirasan Mariano Troccoli | 2003 | Science2003，302，： | 1 |
| 9 | Do Universities Knowledge Spillovers Impact on New Firm' s Growth? Empirical Evidence from UK 显示文摘 | Cassia L and Colombelli A | 2008 | International Entrepreneur Management Journal2008，，4： | 1 |
| 10 | Firms' growth:Does the innovation system matter?显示文摘 | LUCIO CASSIA ALESSANDRA COLOMBELLI STEFANO PALEARI | 2009 | Structural Change and Economic Dynamics2009，，20： | 1 |
| 11 | Quantum cascade surface-emitting photonic crystal laser 显示文摘 | Colombelli R Srinivasan K Troccoli M | 2003 | Science2003，302，： | 1 |
| 12 | Do universities knowledge spillovers impact on new firms growth? Empirical evidence from UK显示文摘 | Cassia L Colombelli A | 2008 | International Entrepreneur Ship and Management Journal2008，，4： | 1 |
| 13 | Fast polarization effects in optical aerial cables caused by lightning and impulse currant显示文摘 | Pielralunga S M Colombelli J Fellegara A | 2004 | IEEE Photonics Technology Letters2004，16，11： | 1 |
| 14 | Do universities knowledge spillovers impact on new firm' s growth? empirical evidence from UK 显示文摘 | Cassia L Colombelli A | 2008 | International Entrepreneur Management Journal2008，，4： | 1 |
| 15 | Quantum cascade surface ∑ emitting photonic crystal laser 显示文摘 | R Colombelli | 2003 | Science2003，302，5649： | 1 |
| 16 | Chemical sensors based on quantum cascade lasers显示文摘 | Gmachl C Straub A Colombelli R | 2002 | IEEE Journal of Quantum Electronics2002，38，6： | 1 |
| 17 | Properties of knowledge base and firm survival : Evidence from a sample of French manufacturing firms 显示文摘 | Alessandra Colombelli Jackie Krafft Francesco Quatraro | 2013 | Technological Fore- casting & Social Change2013，，2： | 1 |
| 18 | Growth Factors in Medium-sized Enterprises:the Case of an Italian Region显示文摘 | Lucio Cassia Alessandra Colombelli | 2010 | Interna-tional Entrepreneurship and Management Journal2010，16，6： | 1 |
| 19 | Transient and DNA-free in vivo CRISPR/Cas9 genome editing for flexible modeling of endometrial carcinogenesis显示文摘Dear Editor,The Clustered Regularly Interspaced Short Palindromic Repeats(CRISPR)and CRISPR-associated protein 9(Cas9)(CRISPR/Cas9)-mediated generation of somatically genetically engineered mouse models have emerged as a new approach for in vivo modeling of cancer[1].Here,we describe a novel DNA-free,easy,rapid,flexible,multiplexable,and robust method to model endometrial neoplasia by CRISPR/Cas9 ribonucleoprotein(RNP)electroporation into the uterus of mice. | Raúl Navaridas Maria Vidal-Sabanés Anna Ruiz-Mitjana Aida Perramon-Güell Cristina Megino-Luque David Llobet-Navas Xavier Matias-Guiu Joaquim Egea Mario Encinas Lídia Bardia Julien Colombelli Xavier Dolcet | 2023 | Cancer Communications2023，43，5： | 0 |
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