The
Vision Spectra
Conference is now available ON DEMAND: Discover emerging trends in Cameras, Systems, and Sensors!
Register
Sign In
Subscribe
Advertise
Publications
Photonics Spectra
BioPhotonics
Vision Spectra
Photonics Showcase
Photonics Buyers' Guide
Photonics Handbook
Photonics Dictionary
Newsletters
News & Features
Latest News
Latest Products
Features
All Things Photonics Podcast
By Technology
Lasers & Light Sources
Optics
Materials & Coatings
Imaging
Sensors & Detectors
Test & Measurement
Integrated Photonics
Spectroscopy
Biophotonics
Machine Vision
Marketplace
Supplier Search
Product Search
Career Center
Webinars & Events
Webinars
Photonics Media Virtual Events
Industry Events Calendar
Resources
White Papers
Videos
Bookstore
Contribute an Article
Suggest a Webinar
Submit a Press Release
Subscribe
Advertise
Become a Member
Publications
Photonics Spectra
BioPhotonics
Vision Spectra
Photonics Showcase
Photonics Buyers' Guide
Photonics Handbook
Photonics Dictionary
Newsletters
News & Features
Latest News
Latest Products
Features
All Things Photonics Podcast
By Technology
Lasers & Light Sources
Optics
Materials & Coatings
Imaging
Sensors & Detectors
Test & Measurement
Integrated Photonics
Spectroscopy
Biophotonics
Machine Vision
Marketplace
Supplier Search
Product Search
Career Center
Webinars & Events
Webinars
Photonics Media Virtual Events
Industry Events Calendar
Resources
White Papers
Videos
Bookstore
Contribute an Article
Suggest a Webinar
Submit a Press Release
Subscribe
Advertise
Become a Member
Register
Sign In
submit press release
(9,094 items)
Research & Technology News
Chalcogenide Fibers Show Promise as Raman Lasers
Oct 1, 2003 — Lasers in the 2- to 10-µm region are important for a number of spectroscopic, remote sensing and military applications. Raman fiber lasers offer one approach to such lasers, but the relatively low Raman gain of conventional silica fibers is an impediment. Recently, scientists from SFA Inc. in Largo, Md., and the Naval Research Laboratory in Washington have shown that the Raman gain of a small-core AsSe fiber has a Raman coefficient 340 times as great as that of silica. Such a high Raman gain...
Crystal Offers High Fourth-Harmonic Conversion Efficiency
Oct 1, 2003 — Few nonlinear crystals are available whose transmission and nonlinearities are compatible with the efficient generation of the fourth harmonic of Nd:YAG at 266 nm. KBe2BO3F2 (KBBF) has many desirable parameters: It has a high damage threshold and...
Crystals Compensate for Birefringence in Polymer
Oct 1, 2003 — The processing of optical polymers in the production of liquid crystal displays (LCDs) and lenses tends to produce birefringence in the materials. Manufacturers may compensate for this phenomenon by using alternative fabrication techniques, such as...
Erbium-Doped Fiber Amplifier Displays Low Noise
Oct 1, 2003 — Most fiber optic systems operate in the 1530- to 1565-nm C-band because the gain of erbium-doped fiber amplifiers peaks in this spectral region. But as the demand for bandwidth grows, many telecom engineers look covetously at the 1565- to 1625-nm...
Fiber Laser Is Wavelength-Tunable for the S-Band
Oct 1, 2003 — A group at the National Chiao-Tung University in Hsinchu, Taiwan, has capitalized on recent successes with S-band erbium-doped fiber amplifiers to design and demonstrate a wavelength-tunable fiber laser for this telecommunications band. Wavelength-...
Grating Enables Tunable Fiber Laser for Telecom
Oct 1, 2003 — Today's fiber optic telecom systems use a different fixed-frequency semiconductor laser to transmit each channel into the optical fiber. If these individual lasers were tunable -- that is, capable of switching from one wavelength channel to another...
Hybrid Bragg Grating Enables Optical Current Sensor
Oct 1, 2003 — Engineers at City University of Hong Kong have demonstrated a compact, inexpensive optical sensor for alternating and direct currents. The sensor, based on a fiber Bragg grating, has a low susceptibility to temperature variations and offers an...
Minilaser Is Tunable, Single-Frequency Source at 1.5 µm
Oct 1, 2003 — A widely tunable, single-frequency laser operating in the 1.5-µm spectral region has application not only in testing and qualifying C-band telecom components, but also in Doppler-shifted velocity measurements and in spectroscopic studies. A group of...
Mode-Locked Ring Laser Produces 274-fs Pulses
Oct 1, 2003 — Scientists at the University of Central Florida in Orlando have developed a "breathing mode" semiconductor laser with mode-locked, externally compressed 274-fs pulses. The approach promises semiconductor lasers capable of producing even shorter...
New Holey Fiber Is Easy to Manufacture
Oct 1, 2003 — Scientists at Virginia Polytechnic Institute and State University in Blacksburg have developed a new form of holey fiber that is easier to fabricate than previous types. They call it "random-hole optical fiber" because the airholes are randomly...
New Semiconductor Lithography Makes a Splash
Oct 1, 2003 — Semiconductor manufacturers are about to be all wet. But that's a good thing. A new technique called immersion lithography could allow the industry to continue tracking Moore's law, which forecasts substantial annual decreases in state-of-the-art...
Quantum Dots Suitable for Computing
Oct 1, 2003 — Quantum computers promise to enable immense computing power in systems based on units of information called qubits, which are similar to the binary bits in today's classical computers but which also can simultaneously represent both a 0 and a 1....
Tunable Dispersion Compensator Uses Micromirrors
Oct 1, 2003 — At Sumitomo Electric Industries Ltd. in Yokoha-ma, Japan, engineers have developed a device based on microelectromechanical systems (MEMS) technology that provides tunable dispersion compensation across the spectrum of channels of a wavelength...
Bidirectional Multiplexer Features Six-Port Circulators
Sep 1, 2003 — Unidirectional optical add/ drop multiplexers are common elements in fiber optic networks, but bidirectional designs have been complex and generally lack flexibility. A team of engineers at the University of Melbourne in Australia recently designed...
Calibration Method Enables Alignment down to 1 µm
Sep 1, 2003 — Alignment of tiny objects is an important task in the photonics industry. Fibers, waveguides and microlenses must be adjusted to maximize light throughput or to prepare for gluing or welding. Unfortunately, imaging systems used for automated...
Diffractive Microlens Cuts Laser Costs
Sep 1, 2003 — Assembly and alignment are major cost drivers in the fabrication of photonic components. Nowhere is this more evident than in the packaging of laser modules for metropolitan optical networks, for which demand is growing rapidly. A team at Oki...
Feedback Stabilizes High-Power Diode Lasers
Sep 1, 2003 — High-power, broad-area semiconductor lasers exhibit spatial and temporal instabilities due to fundamental nonlinear interactions between the intense optical field and the semiconductor material. These interactions result in a broad spectral emission...
Fresnel Optics Investigated for Next-Generation Lithography
Sep 1, 2003 — Achromatic Fresnel optical sys-tems under development at Xradia Inc. of Concord, Calif., promise to compete with mirror-based solutions for next-generation extreme-ultraviolet lithography in the production of integrated circuits. The researchers at...
Heat Spreader Boosts Laser Power
Sep 1, 2003 — Optically pumped vertical-external-cavity surface-emitting lasers are attractive in a number of applications but have suffered from thermal loading because the pump beam is focused to such a small spot -- typically 100 µm -- in the lasers' gain...
High-Power Yb-Doped Fiber Laser Emits at 977 nm
Sep 1, 2003 — Engineers at the University of Southampton and at Southampton Photonics Inc. in the UK have demonstrated the first high-power -- i.e., greater than 1 W -- ytterbium-doped fiber laser emitting at 977 nm. Such a device might find use as a pump for...
Investigations Probe Ultraslow and Superluminal Light
Sep 1, 2003 — In the few short years following the demonstrations of the slowing and stopping of light in ultracold clouds of atoms and of the superluminal propagation of radiation, researchers have entered a golden age of exploration into such phenomena. Two...
Laser Links Depend on the Weather
Sep 1, 2003 — Researchers at Ben-Gurion University of the Negev in Beersheba, Israel, have performed a mathematical analysis of the wavelength-dependence of atmospheric interference on free-space optical links. Their results will affect the wavelength of...
Noncritical Phase Matching Yields 236-nm Radiation
Sep 1, 2003 — Investigators at Aculight Corp. in Bothell, Wash., have employed noncritical phase matching to obtain 236-nm radiation by twice frequency-doubling a Q-switched, 946-nm Nd:YAG laser. They generated 43 mW of average ultraviolet power inside a cesium...
System Measures Raman Gain in Bulk Glasses
Sep 1, 2003 — Scientists from the University of Central Florida in Orlando have developed an optical system to measure stimulated Raman gain coefficients in bulk glasses. They have used it to investigate two tellurite glasses developed at the Centre National de...
Twin-Detector Receiver Detects Single Photons over 100 km
Sep 1, 2003 — A low-noise receiver developed by a team of scientists at NEC Corp. and Japan Science and Technology Corp., in collaboration with the Telecommunications Advancement Organization of Japan, has enabled the transmission of single 1550-nm photons over...
<
1
2
3
...
293
294
295
296
297
...
362
363
364
>
July 2024
Subscribe
Advertise
Issue Library
Latest Products
Optical Measuring Machine
Vici & C SpA, Metrios
Tunable Light Sources
MKS Instruments Inc.
Fast Line-Scan Cameras
Basler AG
Piezo Wafer Stage
PI (Physik Instrumente) LP, Motion Control, Air Bearings, Piezo Mechanics
Benchtop Live-Cell Interface
CytoTronics Inc.
Software Solution Stack
Lattice Semiconductor Corp.
High-Speed Framing Cameras
Specialised Imaging Ltd.
Mid-Power LEDs
Luminus Devices Inc.
Tracking Camera Sensor
OMNIVISION
Full HD SWIR Camera
New Imaging Technologies (NIT)
Features
Femtosecond Lasers Spur a Precision Revolution in Materials Processing
Photonics Spectra
, Jul 2024
In the All-Data Revolution, Optical Solutions Advance Beyond PICs
Photonics Spectra
, Jul 2024
Ultraviolet PICs Push the Potential of Nonvisible Microscopy
Photonics Spectra
, Jul 2024
Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Videos
Our Summits & Conferences
Industry Events
Bookstore
Join Our Community
Subscribe
Advertise
Become a member
Sign in
Contribute a Feature
Suggest a Webinar
Submit a Press Release
Mobile Apps
About Us
Our Company
Our Publications
Contact Us
Career Opportunities
Teddi C. Laurin Scholarship
Terms & Conditions
Privacy Policy
California Consumer Privacy Act (CCPA)
©2024 Photonics Media
100 West St.
Pittsfield, MA, 01201 USA
[email protected]
We use cookies to improve user experience and analyze our website traffic as stated in our
Privacy Policy
. By using this website, you agree to the use of
cookies
unless you have disabled them.