Results 61 to 70 of about 240,760 (312)

The Removal of Ceramic Locks in Orthodontia by Means of Laser - Evaluation of the Effect of Diode Lasers Tm:YAP, Nd:YAG and GaAs

Česká Stomatologie a Praktické Zubní Lékařství, 2009
The study demonstrates the possibility of using laser radiation for ceramic bracket removing. Three laser radiations were examined for this effect, and the removing possibility and velocity together with enamel and pulp damage were investigated.
T. Dostálová, H. Jelínková, P. Koranda, J. Šulc, M. Němec, I. Ivanov, M. Miyagi, K. Iwai   +7 more
doaj  

Generation of a 578-nm Yellow Laser by the Use of Sum-Frequency Mixing in a Branched Cavity

IEEE Photonics Journal, 2016
A compact, continuous-wave, solid-state laser at 578 nm has been demonstrated, for the first time to our knowledge, by use of intracavity sum-frequency mixing from a branched cavity with an LBO crystal. Two gain mediums, namely, the Nd:YAG single crystal
Jianming Yang, Huiming Tan, Yubing Tian, Wenming Yao, Gangfei Ma, Qiaojun Ju, Long Zhang, Jiansheng Chen, Zhi Li, Jing Gao   +9 more
doaj   +1 more source

Characteristics of Q-switched cladding-pumped ytterbium-doped fiber lasers with different high-energy fiber designs

, 2001
We theoretically and experimentally analyze Q-switched cladding pumped ytterbium-doped fiber lasers designed for high pulse energies. We compare the extractable energy from two high-energy fiber designs: (1) single- or few-moded low-NA large mode area ...
Alvarez-Chavez, J.A., Clarkson, W.A., Nilsson, J., Offerhaus, H.L., Turner, P.W., Renaud, Cyril C., Richardson, D.J., Grudinin, A.B.   +7 more
core   +1 more source

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security

Advanced Materials, EarlyView.
An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak, Changgyun Moon, Hyun‐Bin Yu, Sunkook Kim, Dong‐Hwan Kim   +4 more
wiley   +1 more source

Near‐Unity Chiral Lasing Enabled by Quasi‐Bound States in the Continuum

Advanced Materials, EarlyView.
Nanoimprinted chiral array that supports bound states in the continuum is doped with an efficient non‐chiral molecule (Rhodamine‐B) acting as gain medium to produce fully circularly polarized lasing emission. The chiral lasing wavelength can be tuned across the emission band of Rhodamine‐B by adjusting the coating thickness of the TiO2 high refractive ...
Jose Mendoza‐Carreño, Luis A. Pérez, Carlota Ruiz De Galarreta, Théo Rouanet, M. Isabel Alonso, Agustín Mihi   +5 more
wiley   +1 more source

Direct diode pumped Ti:Sapphire ultrafast regenerative amplifier system

Conference on Lasers and Electro-Optics, 2017
We report on the first to our knowledge direct diode-pumped Ti:sapphire ultrafast regenerative amplifier system. Pumped with CW 450nm fiber-coupled laser diode modules and employing cryocooling of the ti:sapphire, this first implementation produces multi-
S. Backus, M. Kirchner, C. Durfee, Henry Kaptyen, M. Murnane   +4 more
semanticscholar   +1 more source

Bias‐Field Free Single‐Frequency CW‐ODMR of Nitrogen‐Vacancy Centers in Diamond for the Detection of Transient Electrical Signals

Advanced Materials Interfaces, EarlyView.
Simplified quantum sensing technique for the detection of short electrical signals occurring in neuronal signaling or bioinspired technologies. We demonstrate a single frequency continuous‐wave optically detected magnetic resonance (CW‐ODMR) approach to sense signals that can be as short as 0.2 ms.
João Paulo Silva, Orlando D. Cunha, Pedro Magalhães, Filipe Camarneiro, Jana B. Nieder   +4 more
wiley   +1 more source

Volume Bragg grating external cavities for the passive phase locking of high-brightness diode laser arrays : theoretical and experimental study [PDF]

, 2011
We describe the theoretical modeling of the external-cavity operation of a phase-locked array of diode lasers in two configurations, the self-imaging cavity based on the Talbot effect and the angular-filtering cavity. Complex filtering functions, such as
Jun Lim, Larkins, Eric, Gaëlle Lucas-Leclin, Jensen, Ole Bjarlin, Thestrup, Birgitte, Thestrup Nielsen, Birgitte, Birgitte Thestrup, Deepak Vijayakumar, Sujecki, Slawomir, Georges, Patrick, Eric Larkins, David Pabœuf, Ole Bjarlin Jensen, Paboeuf, David, Patrick Georges, Slawomir Sujecki, Thestrup, Birgit, Lim, Jun, Vijayakumar, Deepak, Lucas-Leclin, Gaëlle   +19 more
core   +1 more source

Measuring and Manipulating Density of States in Two‐Dimensional Materials With Electrochemical Capacitance

Advanced Materials Interfaces, EarlyView.
We report electrochemical quantum capacitance spectroscopy as an ambient, in situ probe for defect‐mediated electronic structure at 2D material interfaces. Using monolayer MoS2, the method resolves band edges and vacancy states, tracks sulfur‐vacancy evolution during hydrogen evolution, and links interfacial density‐of‐states changes to nearly ...
Mengyu Yan, Mitchell Kaiser, Maria L. Sushko, Xiaobin Liao, Hao Tang, Chun‐Chih Tseng, Matthew Yankowitz, Ying Xia, Jihui Yang, Jun Liu   +9 more
wiley   +1 more source