Results 91 to 100 of about 5,024,477 (296)

Femtosecond optical frequency comb-based tandem interferometer [PDF]

, 2009
The principle of a unique interferometer, called a femtosecond optical frequency comb-based (FOFC-based) tandem interferometer, is proposed and demonstrated for the first time.
Takamasu, K., Hirokazu Matsumoto, Kiyoshi Takamasu, Wei, D., Dong Wei, Matsumoto, H., Takahashi, S., Satoru Takahashi   +7 more
core   +1 more source

Transfersomes with core and surface‐loaded NF‐κB p65 siRNA for enhanced transdermal transfection and effective treatment of psoriasis

BMEMat, EarlyView.
TCPL, a transfersome with Tween 80 and PEI, enables efficient transdermal siNF‐κB delivery, resolving PEI's toxicity issue. It promotes lysosomal escape and effective transfection, silences NF‐κB, modulates immunity, and inhibits angiogenesis, alleviating psoriasis. With good biocompatibility, TCPL holds strong clinical translation potential. Schematic
Hui Xing, Yuhui Yang, Ziyi Zhao, Kai Lv, Yiran Shao, Zhi Zhang, Dong Ma   +6 more
wiley   +1 more source

An ultra-stable high-power optical frequency comb

APL Photonics
Optical frequency combs are typically generated in the near-infrared wavelength range, where many mode-locked lasers operate. Nonlinear frequency conversion can then be used to extend optical frequency metrology to other spectral regions, such as the ...
Fabian Schmid, Jorge Moreno, Johannes Weitenberg, Peter Russbüldt, Theodor W. Hänsch, Thomas Udem, Akira Ozawa   +6 more
doaj   +1 more source

Frequency pushing and pulling in semiconductor lasers subject to optical frequency comb injection

Results in Engineering
We theoretically investigate the frequency shift of a free-running semiconductor laser when optically injected by an optical frequency comb. By numerical integration of the laser rate equations, we have identified two types of frequency shifts, frequency
Wafa Althobaity, Sami AlHarthi, Najm Al-Hosiny   +2 more
doaj   +1 more source

Endless frequency shifting of optical frequency comb lines

Optics Express, 2013
The functional principle of a novel technique for frequency shifting lines of an optical frequency comb is demonstrated. The underlying principle is to shift the carrier frequency by changing the carrier phase within the time span between subsequent pulses of a mode-locked laser used as comb generator.
Erik, Benkler, Felix, Rohde, Harald R, Telle   +2 more
openaire   +2 more sources

Beyond antimicrobials: Ecological nano‐strategies for rebalancing dysbiotic oral microbial homeostasis

BMEMat, EarlyView.
Oral microbial homeostasis, a dynamic host‐microbe balance, is vital in infectious diseases. Conventional antibiotics often disrupt this homeostasis, spurring interest in nanomaterials for oral microbial homeostasis rebalancing. This review outlines nanomaterial strategies across three ecological levels (population/community, ecosystem, and cross ...
Chen Hu, Aohan Luan, Yujun Yang, Linlin Wang, Huilin Wang, Ning Wang, Guixin He, Yajie Yang, Rabiya Noor, Jawad Hussain, Longquan Shao   +10 more
wiley   +1 more source

Entanglement generation with integrated optical frequency comb sources

, 2017
We show that integrated optical frequency comb sources, based on on-chip microring resonators, can be used as versatile sources of two- and multi-photon entangled states when operated well below their optical parametric oscillation threshold.
Brent E. Little, Sai T. Chu, Benjamin Wetzel, Piotr Roztocki, David J. Moss, Caspani, Lucia, Bromberg, Yaron, Little, Brent E., Roberto Morandotti, Reimer, Christian, Christian Reimer, Wetzel, Benjamin, Morandotti, Roberto, Yaron Bromberg, Chu, Sai T., Michael Kues, Lucia Caspani, Roztocki, Piotr, Moss, David J., Kues, Michael, Moss, David   +20 more
core   +1 more source

Homodyne OFDM using simple optical carrier recovery [PDF]

, 2014
We demonstrate a novel optical injection locking approach to carrier recovery in RF-pilot aided OFDM. Any need for optical pre-filtering is eliminated and only very narrow guard bands are required.
Wu, D.S., David J. Richardson, Slavík, R., Richardson, D.J., Zhixin Liu, Liu, Z., David S. Wu, Radan Slavík   +7 more
core   +1 more source

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source

Selective amplification of frequency comb modes via optical injection locking of a semiconductor laser: influence of adjacent unlocked comb modes

Optical injection locking can be used to isolate and amplify individual comb modes from an optical frequency comb (OFC). However, it has been observed that for narrow spaced OFCs (e.g.
Wu, D.S., Slavík, R., Richardson, D.J.
core   +1 more source