Results 71 to 80 of about 118,225 (289)

Retrieval of phase relation and emission profile of quantum cascade laser frequency combs

, 2019
The major development recently undergone by quantum cascade lasers has effectively extended frequency comb emission to longer-wavelength spectral regions, i.e. the mid and far infrared.
Bartalini, Saverio, Beck, Mattias, Campa, Annamaria, Campo, Giulio, Cappelli, Francesco, Consolino, Luigi, de Cumis, Mario Siciliani, De Natale, Paolo, Eramo, Roberto, Faist, Jérôme, Galli, Iacopo, Mazzotti, Davide, Pastor, Pablo Cancio, Rösch, Markus, Scalari, Giacomo   +14 more
core   +1 more source

Functional Analysis of Ligand‐Gated Chloride Channels in a Cnidarian Sheds Light on the Evolution of Inhibitory Signaling

Advanced Science, EarlyView.
We uncover a large variety of putative inhibitory ligand‐gated ion channels (LGICs) in the phylum Cnidaria, the sister group to all bilaterian animals. Phylogenetic analysis suggests a complex evolutionary history of inhibitory LGICs with diverse neurotransmitter ligands.
Abhilasha Ojha, Linda Kloss, Juan D. Montenegro, Simone Albani, Audrey Ortega‐Ramírez, Mihaela Raycheva, Sylvia Joussen, Sabrina Kaul, Michèle Bachmann, Lisa Huf, Günther Schmalzing, Alison G. Cole, Ulrich Technau, Stefan Gründer   +13 more
wiley   +1 more source

Optical Lattice Trap for Kerr Solitons

, 2017
We show theoretically and numerically that dichromatic pumping of a nonlinear microresonator by two continuous wave coherent optical pumps creates an optical lattice trap that results in the localization of intra-cavity Kerr solitons with soliton ...
Maleki, Lute, Matsko, Andrey B., Taheri, Hossein   +2 more
core   +1 more source

Embedded CRISPRi Enhances Gene‐Silencing Efficiency in Drosophila

Advanced Science, EarlyView.
Current CRISPR interference (CRISPRi) technology in Drosophila has limited efficiency. This study introduces the emCRISPRi platform, which significantly enhances transcriptional silencing efficacy by embedding inhibitory domains within the dCas9 architecture.
Pengchong Fu, Xuedi Zhang, Ying Zhou, Jie Zheng, Angyang Sun, Kailong Zhuang, Weiwei Bao, Guanjun Gao   +7 more
wiley   +1 more source

Terabit optical OFDM superchannel transmission via coherent carriers of a hybrid chip-scale soliton frequency comb

, 2018
We demonstrate seamless channel multiplexing and high bitrate superchannel transmission of coherent optical orthogonal-frequency-division-multiplexing (CO-OFDM) data signals utilizing a dissipative Kerr soliton (DKS) frequency comb generated in an on ...
Cui, Wenwen, Geng, Yong, Huang, Shu-Wei, Huang, Xiatao, Ling, Yun, Qiu, Kun, Wong, Chee Wei, Wu, Baojian, Xu, Bo, Yi, Xingwen, Zhang, Jin, Zhou, Heng   +11 more
core   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Spectral Peaked Optical Frequency Comb for Highly Sensitive Spectroscopy

Advanced Photonics Research
Optical frequency combs represent a breakthrough in the field of metrology. Because an optical frequency comb has a large number of comb modes, the optical energy is dispersed over the comb modes, and the optical energy per comb mode is very small.
Norihiko Nishizawa, Shotaro Kitajima, Hideki Tomita, Hisashi Abe   +3 more
doaj   +1 more source

High-power mid-infrared frequency comb source based on a femtosecond Er:fiber oscillator

, 2013
We report on a high-power mid-infrared frequency comb source based on a femtosecond Er:fiber oscillator with a stabilized repetition rate at 250 MHz. The mid-infrared frequency comb is produced through difference frequency generation in a periodically ...
Holzwarth, Ronald, Hundertmark, Holger, Kolomenskii, Alexandre A., Schuessler, Hans A., Strohaber, James, Zhu, Feng   +5 more
core   +1 more source

Observation of topological frequency combs

Quantum Computing, Communication, and Simulation V
On-chip generation of optical frequency combs using nonlinear ring resonators has enabled numerous applications of combs that were otherwise limited to mode-locked lasers. Nevertheless, on-chip frequency combs have relied predominantly on single-ring resonators.
Christopher J. Flower, Mahmoud Jalali Mehrabad, Lida Xu, Gregory Moille, Daniel G. Suarez-Forero, Oğulcan Örsel, Gaurav Bahl, Yanne Chembo, Kartik Srinivasan, Sunil Mittal, Mohammad Hafezi   +10 more
openaire   +3 more sources

Laser Frequency Combs for Astronomical Observations [PDF]

Science, 2008
A direct measurement of the universe's expansion history could be made by observing in real time the evolution of the cosmological redshift of distant objects. However, this would require measurements of Doppler velocity drifts of ∼1 centimeter per second per year, and astronomical spectrographs have not yet been calibrated to this tolerance.
Steinmetz, T., Wilken, T., Araujo-Hauck, C., Holzwarth, R., Hänsch, T. W., Pasquini, L., Manescau, A., D'Odorico, S., Murphy, Michael, Kentischer, T., Schmidt, W., Udem, Th   +11 more
openaire   +4 more sources