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Friday, August 29, 2014
LPTH Press Release: LightPath Technologies Schedules Fiscal 2014 Fourth Quarter Conference Call
Thursday, August 28, 2014
TOMORROW! Physics Seminar: "Octave-wide frequency combs in the mid-infrared and their applications for sensing molecules" Konstantin Vodopyanov/ 8.29.14/ Physical Sciences Room 161
Physics Seminar: "Octave-wide frequency combs in the
mid-infrared and their applications for sensing molecules" Konstantin
Vodopyanov
Friday, August 29, 2014 4:30 PM to 6:00 PM
Physical Sciences Room 161
Physical Sciences Room 161
Optical frequency combs produced by ultrafast mode-locked
lasers have revolutionized precision spectroscopy and time metrology,
culminating in the 2005 Nobel Prize in Physics. I will present a new technique
for extending frequency combs to the highly desirable yet difficult-to-achieve
mid-infrared range - the region of fundamental molecular fingerprints. The
technique is based on subharmonic optical parametric oscillation (OPO) that can
be considered as a reverse of second harmonic generation. Using ultrafast
erbium or thulium fiber lasers as a pump, we produce frequency combs that can
be more than octave wide, e.g. span from 2.5 to 6 µm without gaps. I will talk
about coherent properties of the generated mid-IR combs, as well as their
applications including trace molecular detection via absorption spectroscopy.
Working in the Fourier domain allows taking advantage of massive parallelism of
spectral measurements (thanks to the broad spectrum), as well as very high
speed of data acquisition (thanks to the coherent nature of the frequency
combs), up to 1M spectral points in a fraction of a second.
Thursday, August 21, 2014
TOMORROW! Student Chapter Seminar: "Generation and modulation of optical vortices with liquid crystal technology" by Prof. Yan-qing Lu 8.22.14/11:00am-12:00pm/ CREOL 103
Seminar: "Generation and modulation of optical
vortices with liquid crystal technology" by Prof. Yan-qing Lu
Friday, August 22, 2014 11:00 AM to 12:00 PM
CREOL Room 103
CREOL Room 103
Prof. Yan-qing Lu
College of Engineering and Applied Sciences, Nanjing
University, China
Abstract:
We present a technique for producing tunable optical
vortices and other structured wavefronts by using liquid crystal (LC)
photo-patterning technology. To write patterned alignment structures in to LC
cells, a home-made micro-lithography system with a digital micro-mirror device
(DMD) as dynamic mask forms arbitrary micro-images on photo-alignment layers
and further guides the LC molecule orientations. Arbitrary fine
photo-patterning fork gratings, polarization fork gratings, q-plates are
fabricated. The related wavefront transformation properties are studied. Clear
optical vortices with designed topological charges are obtained in different
wavelengths. When a voltage is applied on the cell, index re-distribution is
induced due to the realignment of LC molecules; and then the optical vortices
become tunable. In addition, some recent results on LC tunable Airy beams,
vector beams are also introduced.
Biography:
Prof. Yan-qing Lu received both his BS and Ph.D.
degrees from Nanjing University, China, in 1991 and 1996 respectively. He has
five-year experiences in US and China telecomm industries. He designed and
developed a serial of liquid crystal based fiber-optic devices with his
colleagues, which include variable optical attenuators, variable Mux/Demux, DWDM
wavelength blocker etc. He is currently a Professor at the College of
Engineering and Applied Sciences, Nanjing University. His research interests
include liquid crystal photonics, nonlinear optics and fiber optics. He is the
author or co-author of ~130 peer-reviewed papers with over 1600 ISI citations.
He also holds more than 40 domestic or international patents or pending
patents. He currently serves as a deputy editor of Optical Materials Express.
He was a visiting research scientist in Prof. S. T. Wu’s group in CREOL from
2003 to 2005.
For more information:
Prof. Shin-Tson Wu, 407-823-4763
SID Student Chapter: Daming Xu
IEEE Photonics Student Chapter: Zhenyue Luo
Wednesday, August 20, 2014
Congratulations to Bond, Schoeneck & King PLLC, an FPC member, which was recognized with 81
attorneys selected by their peers for inclusion in The Best Lawyers in
America® 2015 listing, representing 24 practice areas. Bill Greener, our FPC supporter at BSK, is among those selected for this fine recognition of their skills and accomplishments.
Monday, August 18, 2014
NSTC & CREOL Distinguished Seminar: "Nanotechnology Meets Biology in the Cancer Cell" by: Dr. Mostafa A. El-Sayed 9.5.14/3:00-4:00pm/ CREOL Room 102 & 103
NSTC & CREOL Distinguished Seminar:
"Nanotechnology Meets Biology in the Cancer Cell" by: Dr. Mostafa A.
El-Sayed
Friday, September 5, 2014 3:00 PM to 4:00 PM
CREOL Room 102 & 103
CREOL Room 102 & 103
Dr. Mostafa A. El-Sayed
Regents Professor and Julius Brown Chair
School of Chemistry and Biochemistry
Laser Dynamics Laboratory (LDL)
Georgia Institute of Technology
Atlanta, Georgia
Abstract:
The Properties of material is determined by the space
available for their electrons to undergo their characteristic motion. This
space ranges from 1-100 nm for the different materials around us. If the
material size changes below its characteristic size, its property changes and
becomes new material and its property become sensitive to further changes in
size or shape. The important new properties of metallic Silver and Gold having
nanometer sizes will be discussed. Their new optical and photothermal
properties will be detailed and used in detecting, treating and following the
dynamic properties of alive cancer cells and as they die.
For additional information:
Monday, August 11, 2014
TOMORROW! Seminar:"High energy x-rays and Photo-luminescence spectroscopy to investigate the mechanics of ceramic coatings for extreme environments and sensing applications" by Seetha Raghavan 8.12.14/11:00am-12:00pm/ CREOL Room 102
High energy x-rays and Photo-luminescence spectroscopy to
investigate the mechanics of ceramic coatings for extreme environments and
sensing applications" by Seetha Raghavan
Tuesday, August 12, 2014 11:00 AM to 12:00 PM
CREOL Room 102
CREOL Room 102
Seetha Raghavan
Department of Mechanical and Aerospace
Engineering, University of Central Florida
Abstract:
Ceramics and Ceramic composites hold promise for meeting the
extreme environments that accompany hypersonic and space applications. The
strain-dependent characteristics of ceramics under the effect of light sources,
such as the brilliance of lasers and high energy x-rays, can provide key
information on the behavior that makes these material systems superior, and yet
limits their durability. These non-invasive techniques transcend length scales,
providing high-resolution measurements that target the strain response of
individual materials within the composite. The exploration of these techniques
for in situ measurements under thermal and/or mechanical conditions will be
discussed for thermal barrier coatings (TBC) and alumina nanocomposites. In
TBCs, synchrotron x-ray diffraction measurements provide both qualitative and
quantitative in situ results on the strain evolution over the depth. Here, the
effect of mechanical loads at critical points within the thermal cycle was
determined. In the study of ceramic reinforcements within a matrix,
photo-luminescent spectral peaks reveal load transfer behavior under varying
volume fractions of alumina nanoparticles. Developments made through these
research areas are currently being used to expand the versatility of the
techniques to meet realistic testing environments and to enable structural
diagnostics tools.
Biography:
Dr Raghavan joined UCF in Fall 2008 after completing her
doctoral studies at Purdue University, Indiana, School of Aeronautics and
Astronautics in the area of Structures & Materials. She obtained her M.S.,
Aeronautical Engineering in Structures at SUPAERO (ISAE), Toulouse, France
where she also worked with Messier Bugatti in Velizy, Paris. Prior to this, she
completed her B.Eng in Mechanical Engineering at Nanyang Technological
University, Singapore. She has experience in the aerospace industry where she
was a senior engineer involved in Aircraft Structural Analysis, Aircraft
Maintenance, Repair & Modifications and Non-destructive testing research
& development for Fatigue crack Inspection using Ultrasonic and Eddy
current techniques.
For additional information:
Dr. Bahaa E. A. Saleh
Dean & Director, Professor of Optics
407-882-3326
Thursday, August 7, 2014
TOMORROW! Seminar: "Enhanced light matter interactions in silicon plasmonic platform" by Dr.Uriel Levy 8.8.14/ 1:00pm-2:00pm/ CREOL Room 102
Seminar: "Enhanced light matter interactions in
silicon plasmonic platform" by Dr. Uriel Levy
Friday, August 8, 2014 1:00 PM to 2:00 PM
CREOL Room 102
CREOL Room 102
Abstract:
Following the ongoing effort for miniaturization of devices
and systems, on chip nanoscale photonic and plasmonic based devices and system
are becoming a reality. In this talk I describe our recent progress towards the
construction of on chip silicon photonics and silicon plasmonics passive and
active devices. This effort include the demonstration of plasmonic enhanced
silicon photo detectors for the infrared, nanoscale electro optical modulators
in silicon, nanoscale confinement of electromagnetic energy and nonlinear
interactions of light with hot vapor on a chip. Additionally, I will present an
approach for thermal mapping with nanoscale resolution and apply this approach
for the characterization of nanoscale photonic and plasmonic devices. Finally,
I will share our recent results of on chip spectroscopy and nonlinear interactions
using the platform of atomic clad waveguide and plasmonic assisted atomic
transitions.
Biography:
Prof. Uriel Levy joined the Department of Applied Physics,
School of Engineering and Computer Science of the Hebrew University of
Jerusalem (HUJI) in fall 2006. Prior to that he spent nearly 4 years as a post
graduate researcher at the University of California, San Diego. He holds a Ph.D
degree in electrical engineering from Tel Aviv University and BS.c in physics
and material engineering from the Technion institute of technology. His major
research interests include nanophotonics, with focus on silicon photonics and
plasmonics, for applications in communication, imaging, lithography, memory,
alternative energy and sensing.
For additional information:
Dr. Demetrios Christodoulides
407-882-0074
Wednesday, August 6, 2014
SID Student Chapter Seminar: "Generation and modulation of optical vortices with liquid crystal technology" by Prof. Yan-qing Lu 8.22.14/ 11:00am-12:00pm/ CREOL 102
Seminar: "Generation and modulation of optical
vortices with liquid crystal technology" by Prof. Yan-qing Lu
Friday, August 22, 2014 11:00 AM to 12:00 PM
CREOL Room 102
CREOL Room 102
Prof. Yan-qing Lu
College of Engineering and Applied Sciences, Nanjing
University, China
Abstract:
We present a technique for producing tunable optical
vortices and other structured wavefronts by using liquid crystal (LC)
photo-patterning technology. To write patterned alignment structures in to LC
cells, a home-made micro-lithography system with a digital micro-mirror device
(DMD) as dynamic mask forms arbitrary micro-images on photo-alignment layers
and further guides the LC molecule orientations. Arbitrary fine
photo-patterning fork gratings, polarization fork gratings, q-plates are
fabricated. The related wavefront transformation properties are studied. Clear
optical vortices with designed topological charges are obtained in different
wavelengths. When a voltage is applied on the cell, index re-distribution is
induced due to the realignment of LC molecules; and then the optical vortices
become tunable. In addition, some recent results on LC tunable Airy beams,
vector beams are also introduced.
Biography:
Prof. Yan-qing Lu received both his BS and Ph.D.
degrees from Nanjing University, China, in 1991 and 1996 respectively. He has
five-year experiences in US and China telecomm industries. He designed and
developed a serial of liquid crystal based fiber-optic devices with his
colleagues, which include variable optical attenuators, variable Mux/Demux,
DWDM wavelength blocker etc. He is currently a Professor at the College of
Engineering and Applied Sciences, Nanjing University. His research interests
include liquid crystal photonics, nonlinear optics and fiber optics. He is the
author or co-author of ~130 peer-reviewed papers with over 1600 ISI citations.
He also holds more than 40 domestic or international patents or pending
patents. He currently serves as a deputy editor of Optical Materials Express.
He was a visiting research scientist in Prof. S. T. Wu’s group in CREOL from
2003 to 2005.
For more information:
Prof. Shin-Tson Wu, 407-823-4763,
SID Student Chapter: Daming Xu,
IEEE Photonics Student Chapter: Zhenyue Luo,
Tuesday, August 5, 2014
Seminar: "Enhanced light matter interactions in silicon plasmonic platform" by Dr.Uriel Levy 8.8.14/ 1:00pm-2:00pm/ CREOL Room 102
Seminar: "Enhanced light matter interactions in
silicon plasmonic platform" by Dr. Uriel Levy
Friday, August 8, 2014 1:00 PM to 2:00 PM
CREOL Room 102
CREOL Room 102
Abstract:
Following the ongoing effort for miniaturization of devices
and systems, on chip nanoscale photonic and plasmonic based devices and system
are becoming a reality. In this talk I describe our recent progress towards the
construction of on chip silicon photonics and silicon plasmonics passive and
active devices. This effort include the demonstration of plasmonic enhanced
silicon photo detectors for the infrared, nanoscale electro optical modulators
in silicon, nanoscale confinement of electromagnetic energy and nonlinear
interactions of light with hot vapor on a chip. Additionally, I will present an
approach for thermal mapping with nanoscale resolution and apply this approach
for the characterization of nanoscale photonic and plasmonic devices. Finally,
I will share our recent results of on chip spectroscopy and nonlinear
interactions using the platform of atomic clad waveguide and plasmonic assisted
atomic transitions.
Biography:
Prof. Uriel Levy joined the Department of Applied Physics,
School of Engineering and Computer Science of the Hebrew University of
Jerusalem (HUJI) in fall 2006. Prior to that he spent nearly 4 years as a post
graduate researcher at the University of California, San Diego. He holds a Ph.D
degree in electrical engineering from Tel Aviv University and BS.c in physics
and material engineering from the Technion institute of technology. His major
research interests include nanophotonics, with focus on silicon photonics and
plasmonics, for applications in communication, imaging, lithography, memory,
alternative energy and sensing.
For additional information:
Dr. Demetrios Christodoulides
407-882-0074
demetri AT creol DOT ucf DOT edu
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