Results 71 to 80 of about 153,313 (366)

Ultrahigh speed all-optical demultiplexing based on two-photon absorption in a laser diode [PDF]

, 1998
The authors describe how the nonlinear process of two-photon absorption in a commercial laser diode may be used for all-optical demultiplexing in terabit per second optical time division multiplexing networks. Switching windows of 650 fs in duration have
Thomsen, Benn C., Barry, Liam P., Dudley, John M., Harvey, John D.   +3 more
core   +1 more source

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Double-clad structures and proximity coupling for diode-bar-pumped planar waveguide lasers

, 2000
We report, for the first time, fabrication of double-clad planar waveguide structures and their use for multiwatt, diode-bar-pumped, planar waveguide lasers based on Nd3+ and Yb3+-doped YAG.
Shepherd, D.P., Tropper, A.C., Bhutta, T., Bonner, C.L.   +3 more
core   +1 more source

Power-scalable Ho:YAG slab laser intracavity side-pumped by a Tm:YLF slab laser [PDF]

, 2006
We report the first demonstration of an intracavity side-pumped Ho:YAG slab laser, delivering 13W at 2.09µm and discuss the advantages of this scheme as an approach for power ...
Shepherd, David, Betterton, John G., D. P. Shepherd, E. K. Gorton, Mackenzie, Jacob, S. So, So, Sik, J. A. C. Terry, J. I. Mackenzie, Clarkson, W. Andrew, W. A. Clarkson, Gorton, Eric K., Terry, John A.C., J. G. Betterton   +13 more
core   +1 more source

Diode laser versus conventional circumferential supracrestal fiberotomy in preventing orthodontic relapse: A randomized controlled trial

Indian Journal of Dental Research
Objectives: This study aimed to compare diode laser-assisted and conventional surgical circumferential supracrestal fiberotomy in preventing rotational relapse following orthodontic derotation.
Abhita Malhotra, Swati Kharb, Puneet Batra, Nitin Arora, Ashish Kumar Singh   +4 more
doaj   +1 more source

Laser Induced Damage Studies on Al2O3, SiO2, and MgF2 Thin Films for Anti-Reflection Coating Application in High Power Laser Diode [PDF]

Журнал нано- та електронної фізики, 2013
The laser diode facet damage is one of the impeding factors of the high-power laser diode operation. To overcome this restriction laser diode facet coating can be utilized.
C.J. Panchal, M.S. Desai, A.L. Patel, G.G. Bhatt   +3 more
doaj  

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

Advanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota, Yuya Nakata, Erika Katayama, Miho Aizawa, Kyohei Hisano, Shoichi Kubo, Atsushi Shishido   +6 more
wiley   +1 more source

Homogenization of high power diode laser beams for pumping and direct applications

, 2022
Paper 61040QHigh power diode lasers have become an established source for numerous direct applications like metal hardening and polymer welding due to their high efficiency, small size, low cost and high reliability. These laser sources are also used for
Hoffmann, H.-D., Traub, M., Loosen, P., Poprawe, R., Plum, H.-D., Wieching, K.   +5 more
core   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Measurements of the indium hyperfine structure in an atmospheric-pressure flame by use of diode-laser-induced fluorescence

, 2004
We report on what we believe is the first demonstration of laser-induced fluorescence (LIF) in flames by use of diode lasers. Indium atoms seeded into an atmospheric-pressure flame at trace concentrations are excited by a blue GaN laser operating near ...
Burns, I.S., Kaminski, C.F., Hult, J.
core   +1 more source