Del Mar Photonics at SPIE Defense, Security +Sensing SPIE DSS conference
13 - 17 April 2009
Orlando World Center Marriott Resort & Convention Center
Orlando, FL United States
Femtosecond related presentations - Nanotechnology presentations - AFM Heron nanoRaman/Femtosecond NSOM
Through-the-jacket inscription of fiber Bragg gratings using femtosecond
infrared radiation for sensor applications (Paper Presentation)
Paper 7316-10 of Conference 7316
Authors(s): Stephen J. Mihailov, Dan Grobnic, Christopher W. Smelser, Robert B.
Walker, Communications Research Ctr. Canada (Canada)
Date: Wednesday, 15 April 2009
Invited talk
Recently, FBG inscription through the polymer coatings of standard optical
fibers was demonstrated using femtosecond pulse duration (fs) infrared (IR)
radiation laser sources. Depending on the exposure technique, fiber type and
polymer coating, significant grating reflectivities can be realized along with
improved mechanical reliability and performance at elevated temperatures. In
this paper, the work to date of fs IR laser inscription of gratings through
various polymer coatings and optical fibers will be reviewed. The only example
of direct FBG inscription through polyimide coatings for high temperature stable
grating sensors will also be presented.
Radiation sensitivity of Bragg gratings written with femtosecond IR lasers
(Paper Presentation)
Paper 7316-11 of Conference 7316
Authors(s): Stefan K. Hoeffgen, Henning Henschel, Jochen Kuhnhenn, Udo Weinand,
Fraunhofer-Institut für Naturwissenschaftlich-Technische Trendanalysen
(Germany); Stephen J. Mihailov, Dan Grobnic, Communications Research Ctr. Canada
(Canada)
Date: Wednesday, 15 April 2009
We intend to develop radiation sensitive fiber Bragg gratings (FBGs) for
radiation dosimetry and radiation insensitive ones for temperature and stress
measurement in radiation environments. Both goals seem to be unreachable with UV
laser written FBGs because UV light already eliminates precursors of color
centers. Furthermore is it impossible to write FBGs in the radiation hardest
fibers with pure or F-doped silica core. Therefore we investigated gratings
written with femtosecond IR lasers. With this laser type it is possible to write
FBGs even in Ge-free fibers. But their influence on the radiation sensitivity of
pristine fibers is unknown so far.
Stand-off detection of organic samples using filament-induced breakdown
spectroscopy (Paper Presentation)
Paper 7306A-37 of Conference 7306A
Authors(s): James Martin, Matthieu Baudelet, Matthew Weidman, Matthew K. Fisher,
Candice Bridge, Christopher G. Brown, Michael Sigman, Martin C. Richardson,
College of Optics & Photonics, Univ. of Central Florida (United States); Paul J.
Dagdigian, The Johns Hopkins Univ. (United States)
Date: Wednesday, 15 April 2009
As an alternative to focused nanosecond pulses for stand-off LIBS detection of
energetic materials, we use self-channeled femtosecond pulses (35 fs, 25 mJ)
from a Ti:Sapphire laser to produce filaments up to 50 meters and create a
plasma on energetic material samples.
Light collection challenge is done via an off–axis Newtonian telescope (30 cm of
diameter and 190 cm focal length). Signal characterizations are made for several
distances of detection.
Finally, sample detection and discrimination from background signal, are
achieved through chemometrics signal processing to improve the organic material
detection.
Optical fabrication of 3D scattering medium for secure optical memory card
(Paper Presentation)
Paper 7329-22 of Conference 7329
Authors(s): Osamu Matoba, Yuri Kitamura, Kouichi Nitta, Kobe Univ. (Japan);
Wataru Watanabe, National Institute of Advanced Industrial Science and
Technology (Japan)
Date: Thursday, 16 April 2009
We present an optical method of making 3D scattering medium that can be used as
secure memory card. By irradiating a femtosecond pulse, a hole or refractive
index change distribution is created. We discuss the possibility of fabrication
of strong scattering mediuam in polymer and the possibility of controlling
scattering coefficient by number of irradiation.
Molecular signal as a signature for detection of energetic materials in
filament-induced breakdown spectroscopy (Paper Presentation)
Paper 7304-53 of Conference 7304
Authors(s): Matthieu Baudelet, Matthew Weidman, Matthew K. Fisher, Christopher
G. Brown, Michael Sigman, Martin C. Richardson, College of Optics & Photonics,
Univ. of Central Florida (United States); Paul J. Dagdigian, The Johns Hopkins
Univ. (United States)
Date: Thursday, 16 April 2009
LIBS induced by self-channeled femtosecond pulses is done on energetic
materials. Spectral analysis of atomic and ionized C, H, O, and N, as well as
and molecular (C2 and CN) transitions shows that there is no atomic carbon
emission, but CN molecular signals even when no nitrogen in the sample.
Molecular recombination between native atomic carbon and atmospheric nitrogen in
the filament-induced-channel above the sample leading to CN formation car
explain this spectral signature and thus the caution on the use of molecular
signal in explosive detection by filament-induced LIBS.
Miniaturized fiber inline Fabry-Perot interferometer for chemical sensing (Paper
Presentation)
Paper 7322-14 of Conference 7322
Authors(s): Tao Wei, Yukun Han, Hai-Lung Tsai, Hai Xiao, Missouri Univ. of
Science and Technology (United States)
Date: Thursday, 16 April 2009
This letter demonstrates the chemical sensing capability of a miniaturized fiber
inline Fabry-Pérot sensor fabricated by femtosecond laser. Its accessible cavity
enables the device to measure the refractive index within the cavity. The
refractive index change introduced by changing the acetone solution
concentration was experimentally detected with an error less than 4.2×10-5.
Generation of wide terahertz radiation using bulk and quasi-phase-matched GaAs
crystal (Paper Presentation)
Paper 7311-9 of Conference 7311
Authors(s): Baolong Yu, Naibing Ma, Min-Yi Shih, Alexander V. Parfenov, Physical
Optics Corp. (United States)
Date: Tuesday, 14 April 2009
Physical Optics Corporation (POC) studied intense terahertz (THz) generation
through optical rectification in bulk low-temperature growth GaAs (LG-GaAs) and
quasi-phase-matched orientation pattern GaAs (OP-GaAs). POC performed
simulations based on one-dimensional coupled propagation equations of THz and
optical fields and conducted experimental tests. The results show that a LG-GaAs
crystal with 0.5mm-thick under the excitation of a compact all-fiber femtosecond
laser (76 MHz, 100 fs, 100 mW, 800 nm) can generate wide frequency range from
0.1 to 8.2 THz. The enhanced conversion efficiency was found for OP-GaAs crystal
that can generate an average THz power of several milliwatts. Both theoretical
and experimental results show that average THz output power is proportional to
the energy fluence of the excitation source rather than the laser power for
ultra-short pulse source. These achievements provide an effective approach to
increase THz output power.
Bragg gratings written in multimode borosilicate fibers using ultrafast infrared
radiation and a phase mask (Paper Presentation)
Paper 7316-12 of Conference 7316
Authors(s): Dan Grobnic, Stephen J. Mihailov, Christopher W. Smelser,
Communications Research Ctr. Canada (Canada)
Date: Wednesday, 15 April 2009
Inscription of Bragg grating structures is reported in inexpensive multimode
borosilicate fibers using femtosecond pulse duration 800 nm infrared radiation
and a phase mask. Thermal annealing of the gratings up to 700 °C reveals a
behavior similar to Type I-IR gratings made in silica fibeer with ultrafast
infrared radiation. A portion of the index modulation of the grating is stable
up to 500 °C. Below 100 °C, the wavelength shift of the Bragg grating is
characterized by ~ 12 pm/°C slope. Above 300 °C, the wavelength shift is ~ 5
pm/°C.
Atmosphere issues in detection of explosives and organic residues (Paper
Presentation)
Paper 7304-50 of Conference 7304
Authors(s): Christopher G. Brown, Matthieu Baudelet, Candice Bridge, Matthew K.
Fisher, Michael Sigman, Martin C. Richardson, College of Optics & Photonics,
Univ. of Central Florida (United States); Paul J. Dagdigian, The Johns Hopkins
Univ. (United States)
Date: Thursday, 16 April 2009
Studies have shown that ionized atmospheric nitrogen and oxygen during the
plasma formation interfere in a LIBS analysis under atmosphere . This becomes
important when detecting explosives, because of their higher concentrations of
nitrogen and oxygen compared to the carbon and hydrogen in non-energetic
materials.
This study makes a comparison of LIBS analysis on organic thin residues on a
non-metallic substrate by nanosecond and femtosecond lasers in air and argon
atmospheres. Principle Component Analysis (PCA) was used to identify the
influence of atmosphere for sample discrimination via the emission spectra and
validated using Receiver Operating Characteristics (ROC) curves.
Formation and properties of the GeSe2-In2Se3-CsI new chalcohalide glasses
(Poster Presentation)
Paper 7298-134 of Conference 7298
Authors(s): Huidan Zeng, East China Univ. of Science and Technology (China)
Date: Thursday, 16 April 2009
Femtosecond Lasers
Ti:Sapphire lasers
Trestles femtosecond Ti:Sapphire laser
Trestles Finesse femtosecond
Ti:Sapphire laser with integrated DPSS pump laser
Teahupoo Rider femtosecond amplified
Ti:Sapphire laser
Cr:Forsterite lasers
Mavericks femtosecond
Cr:Forsterite laser
Er-based lasers
Tamarack femtosecond fiber laser (Er-doped
fiber)
Buccaneer femtosecond OA fiber laser (Er-doped
fiber) and SHG
Cannon Ultra-broadband light source
Yb-based lasers
Tourmaline femtosecond Yt-doped fiber laser
Tourmaline Yb-SS400 Ytterbium-doped Femtosecond Solid-State Laser
Tourmaline Yb-ULRepRate-07 Yb-based high-energy fiber laser system kit
Cr:ZnSe lasers
Chata femtosecond Cr:ZnSe laser (2.5 micron) coming soon
High Power Femtosecond Laser Systems
Wedge-M Multipass Ti:Sapphire Amplifier
Teahupoo Rider femtosecond amplified
Ti:Sapphire laser
Teahupoo MPA 50
Femtosecond Multipass Ti:sapphire Amplifier
Cortes 800 tabletop 40 TW
Ti:Sapphire laser system
Cortes E - High vacuum
laser ablation/deposition system with 2 TW Ti:Sapphire laser
Cortes K - femtosecond seed laser
for Petawatt KrF excimer laser
Cortes O 200TW femtosecond laser - KD*P CPOPA based
amplifier system
Jaws femtosecond Cr:forsterite
Multi-Terawatt Amplified Laser
High-vacuum system for laser
ablation/deposition
Femtosecond pulse measurement instrumentation
Reef scanning and single shot
femtosecond autocorrelators
Avoca SPIDER -
Spectral phase interferometry for direct electric-field reconstruction (SPIDER)
Rincon third order femtosecond
cross-correlator (third order autocorrelator TOAC) also referred to as
contrast meter
Ultrafast Dynamics Research Tools
Beacon femtosecond fluorescence
up-conversion (optical gating) spectrometer
Hatteras Ultrafast Transient
Absorption Spectrometer
Femtosecond Systems and Accessories
Femtosecond Micromachining
Femtosecond nanophotonics
Femtosecond NSOM
Near-field
Scanning Optical Microscope (NSOM)
Pacifica femtosecond fiber laser based
terahertz spectrometer
Pismo pulse picker (ultrafast
electro-optical shutter)
Wavelength conversion:
second and third harmonics generators for femtosecond lasers -
THG for
amplified TiSa -
RegA 9000
Jibe white light continuum generator
Kirra Optical Faraday Rotators and
Isolators
Instruments for Nanotechnologies
AFM HERON
Near-field
Scanning Optical Microscope (NSOM)
Femtosecond nanophotonics
Femtosecond NSOM
Laser accessories
Diffractive Variable Attenuator for high power lasers
Deformable mirrors - active
elements for adaptive optics systems
ShaH - the family of fast,
accurate and reliable wavefront sensors
Complete adaptive optics systems
Faraday rotators and isolators for high-power
(up to 1kW) laser beams
SAM - Saturable Absorber Mirrors
PCA - Photoconductive antenna for terahertz
applications
7 items 1-7
Lab-on-a-chip PCR in continuous flow: an ultrafast analytical tool for B-agents
(Paper Presentation)
Paper 7304-17 of Conference 7304
Authors(s): Claudia Gärtner, Nadine Hlawatsch, Richard Klemm, Microfluidic
ChipShop GmbH (Germany); Thomas Clemens, CLEMENS GmbH (Germany)
Date: Tuesday, 14 April 2009
The aim is the realization of a reliable, ultrafast, and portable tool for the
identification of B-agents at the point of interest. PCR is the method to be
used for the doubtless identification of e.g. bacteria, and viruses.
Miniaturization is the way to include the overall analysis process, from sample
preparation to detection, on a micro titerplate sized consumable device. The
novel PCR concept with constant temperature zones allows also for the instrument
to become portable. The overall concept, methods of sample preparation on chip,
and results of ultrafast PCR with B-agents on chip, as well as the basic
instrument will be presented.
Bragg gratings written in multimode borosilicate fibers using ultrafast infrared
radiation and a phase mask (Paper Presentation)
Paper 7316-12 of Conference 7316
Authors(s): Dan Grobnic, Stephen J. Mihailov, Christopher W. Smelser,
Communications Research Ctr. Canada (Canada)
Date: Wednesday, 15 April 2009
Inscription of Bragg grating structures is reported in inexpensive multimode
borosilicate fibers using femtosecond pulse duration 800 nm infrared radiation
and a phase mask. Thermal annealing of the gratings up to 700 °C reveals a
behavior similar to Type I-IR gratings made in silica fibeer with ultrafast
infrared radiation. A portion of the index modulation of the grating is stable
up to 500 °C. Below 100 °C, the wavelength shift of the Bragg grating is
characterized by ~ 12 pm/°C slope. Above 300 °C, the wavelength shift is ~ 5
pm/°C.
Ultrafast fiber grating sensor system to measure the velocity and position of a
blast wave (Paper Presentation)
Paper 7316-13 of Conference 7316
Authors(s): Eric Udd, Columbia Gorge Research (United States); Jerry J. Benterou,
Lawrence Livermore National Lab. (United States)
Date: Wednesday, 15 April 2009
In order to more fully characterize blast events associated with highly
energetic materials it is necessary to be able to measure the velocity and
position of a blast wave. This paper describes a very fast fiber grating sensor
system to realize these measurements.
Optical biopsy and tissue phantom selection: a novel approach combining
single-photon timing and spatial-mode selection (Paper Presentation)
Paper 7320-8 of Conference 7320
Authors(s): Luca Nardo, Univ. degli Studi dell'Insubria (Italy) and
C.N.R.-I.N.F.M. (Italy); Maria Bondani, National Lab. for Ultrafast and
Ultraintense Optical Science (ULTRAS) (Italy) and C.N.R.-I.N.F.M. (Italy);
Alessandra Andreoni, Univ. degli Studi dell'Insubria (Italy) and C.N.R.-I.N.F.M.
(Italy)
Date: Tuesday, 14 April 2009
By measuring the time of flight distributions (TOF’s) of photons emerging from a
scattering medium at <0.6 mrad from the incident beam direction with an
apparatus featuring new generation single photon avalanche photodiodes and
time-correlated single-photon counting modules, we discriminate the snake
photons, bringing imaging information, from the scattered ones. We can thus
image objects embedded in the scattering medium and assess their optical nature.
With the same method we compare the TOF’s of tissue phantoms with those of
ex-vivo tissues and show that Delrin, Teflon and Nylon phantoms exhibit non-tissuelike
behaviors when simultaneous selection in mode and time is applied.
Time-resolved FRET for single-nucleotide polymorphism genotyping (Poster
Presentation)
Paper 7320-39 of Conference 7320
Authors(s): Alessandra Andreoni, Univ. degli Studi dell'Insubria (Italy); Maria
Bondani, National Lab. for Ultrafast and Ultraintense Optical Science (ULTRAS)
(Italy); Luca Nardo, Univ. degli Studi dell'Insubria (Italy)
Date: Tuesday, 14 April 2009
By tens-of-picosecond resolved fluorescence detection (TCSPC, time-correlated
single-photon counting) we study Förster resonance energy transfer between a
donor and a black-hole-quencher acceptor bound at the 5’- and 3’-positions of a
synthetic DNA oligonucleotide. This dual labelled oligonucleotide is annealed
with either the complementary sequence or with sequences that mimic
single-nucleotide polymorphic gene sequences: they differ in one nucleotide at
positions near either the ends or the centre of the oligonucleotide. We find
donor fluorescence decay times whose values are definitely distinct and discuss
the feasibility of single nucleotide polymorphism genotyping by this method.
Ultrafast single-photon detection with InGaAs avalanche photodiodes for Mbit/s
secure key-rate quantum key distribution (Paper Presentation)
Paper 7320-28 of Conference 7320
Authors(s): Zhiliang Yuan, Alex R. Dixon, James F. Dynes, Andrew W. Sharpe,
Andrew J. Shields, Toshiba Research Europe Ltd. (United Kingdom)
Date: Wednesday, 15 April 2009
We report a recent advance in high speed single photon detection at telecom
wavelengths using compact and cryogenic-free InGaAs/InP avalanche photodiodes. A
circuit that compares the output with that in the preceding period allows
detection of extremely weak avalanches, thus enabling fast, efficient, low-noise
single photon detection with a gigahertz repetition rate, as well as photon
number resolution. Applied to quantum key distribution the device allows a
hundred-fold increase in the secure key rate to record values exceeding 1 Mbit/s
for a 20km link and 10 kbit/s for 100 km. The same device may also be used for
fast quantum random number generation that is intrinsically bias-free and
requires no post processing.
High-performance silicon single-photon avalanche diode arrays (Paper
Presentation)
Paper 7320-16 of Conference 7320
Authors(s): Ivan Rech, Angelo Gulinatti, Franco Zappa, Massimo Ghioni, Sergio D.
Cova, Politecnico di Milano (Italy)
Date: Wednesday, 15 April 2009