From Beginnings to Breakthroughs: Photonics Spectra's Spectroscopy Summit Premieres March 12
Search
Menu
LightPath Technologies - Germanium Alternative1-25 LB
submit feature idea
Features

Superluminescent LEDs Enter the Mainstream
Superluminescent LEDs, also known as high-power LEDs and “laser diodes operating below threshold,” are semiconductor light sources that have a broadband output optical spectrum, like LEDs, at high power levels, like laser diodes. This combination is valuable in a variety of applications, and as a consequence, these emitters are finding commercial use. Superluminescent LEDs are based on a PN junction embedded in an optical waveguide. When electrically biased in the forward direction, they...
Photonics Spectra, October 2005
A Clear View of Fused Silica Transmission Gratings
Diffraction gratings have been manufactured for more than 200 years. Their development was driven initially by the requirements of spectroscopy, where they have been applied since Joseph von Fraunhofer’s work in the early 1800s. For many years,...
Photonics Spectra, September 2005
Advances in Lasers on a Chip
Microfluidic technology has miniaturized many instruments used in biotechnology and medicine into devices about the size of a microscope slide. Developers of these devices, commonly called labs on a chip or biochips, want to achieve maximum...
Photonics Spectra, September 2005
Blue Electroluminescence from a Single Polymer Layer
Interest in organic LEDs is largely due to their potential for cost-effective device fabrication. Research conducted at Massachusetts Institute of Technology in Cambridge is helping to streamline the process by demonstrating stable blue...
Photonics Spectra, September 2005
Building Better LEDs from the Bottom Up
An LED manufacturing technique that promises to enable the production of brighter and more efficient devices has been demonstrated by investigators from National Cheng Kung University in T’ai-nan and Wu-Feng Institute of Technology in Chia-i, both...
Photonics Spectra, September 2005
Hybrid Microscopy Reveals Surface Plasmon Dynamics
By combining the techniques of interferometric time-resolved two-photon emission and photoelectron emission microscopy, scientists at the University of Pittsburgh have generated movies of the dynamic behavior of surface plasmons on a silver grating....
Photonics Spectra, September 2005
Imaging Sphere Enables Rapid Source Intensity Mapping
Many photonic applications require the ability to calculate luminous intensity; that is, light intensity as a function of angle. For example, measuring output as a function of angle helps characterize light sources, luminaires and displays, and the...
Photonics Spectra, September 2005
Imaging with Electrons, Aided by Light
Researchers at California Institute of Technology in Pasadena have developed an instrument with the spatial resolution of an electron microscope and the imaging speed of an optical microscope. They have dubbed it the ultrafast electron...
Photonics Spectra, September 2005
Microscopy Images Photocurrent in Nanowire Detector
Using a near-field scanning optical microscope, researchers at Northwestern University in Evanston, Ill., have produced two-dimensional maps of the photocurrent in a metal/semiconductor/metal photodetector constructed from a single nanowire. The...
Photonics Spectra, September 2005
Microstructured Fiber: Out of the Lab and Put to Use
For almost 40 years, glass fibers have guided and transmitted light, providing optical solutions in many fields of technology. During the past decade, a new variety of optical fiber, microstructured fiber, has emerged from the laboratory and is...
Photonics Spectra, September 2005
Modified Mirror Reaction Metals Apertureless Probes
A research team from the University of Leeds in the UK, Riken research institute in Wako, Japan, and Peking University has demonstrated that a variant of the familiar mirror reaction can deposit silver on the tip of atomic force microscope (AFM)...
Photonics Spectra, September 2005
Organic Dye Molecules Form Waveguides
Scientists at Japan’s National Institute for Materials Science in Tsukuba have reported the synthesis of single-mode waveguides by the self-assembly of organic dye molecules in solution. Waveguides produced from a thiacyanine dye transmit 520- to...
Photonics Spectra, September 2005
Passive Hyperspectral Imagers See Chemical Clouds
Interest in the detection, identification and quantification of chemicals in the gaseous state from a safe distance has increased in the context of domestic defense applications. One promising method to achieve such standoff detection and...
Photonics Spectra, September 2005
Weaker Microcavities Enable Brighter, Whiter Organic LEDs
Consumer display companies have declared white organic LEDs the wave of the future. Combined with a color filter to create red, green or blue and a transistor to switch pixels on and off, top-emitting organic LEDs promise full-color displays that...
Photonics Spectra, September 2005
CMOS vs. CCD: Maturing Technologies, Maturing Markets
CCD and CMOS image sensor technologies were invented in the late 1960s and early 1970s. At the time, CMOS performance was limited by available lithography technology, allowing CCDs to dominate for the next 25 years. Manufacturing and design of...
Photonics Spectra, August 2005
Free-Electron Lasers Come of Age
Free-electron lasers in 2005 are where airplanes were in 1925: well established as a useful new technology, but with enormous untapped potential — and lots of people seeking to tap it. As with other light sources, from tabletop lasers in university...
Photonics Spectra, August 2005
Laser Enables Resolution of Nanomagnet Flipping
At the University of California, Santa Cruz, researchers have demonstrated an optical method to watch nanomagnets flip. Optically tracking changes in the magnetization of the nanostructures could pay off in various ways, explained assistant...
Photonics Spectra, August 2005
Material May Enable Single-Source White LEDs
White LEDs are commonly made by mixing blue light from an LED chip with yellow light from a stimulated YAG phosphor. This approach works, but just a single source would streamline the process. Researchers in a team at National Tsing Hua University...
Photonics Spectra, August 2005
Measuring the Spectral Response of IR Cameras
In the research and development and government test range communities, the need for calibrated, scientific-grade infrared cameras has grown because of demanding, leading-edge applications such as plume and missile target signature measurements and...
Photonics Spectra, August 2005
Multicolor LEDs Get a Boost from Quantum Dots
Much attention in research communities is focused on generating light using semiconductor nanocrystals, also known as quantum dots. One benefit of this method is that emission color can be controlled simply by changing the size of the dots. An...
Photonics Spectra, August 2005
Optical Microscopy Reveals Benefits of Strain for Spintronics
In experiments at Los Alamos National Laboratory in New Mexico, Scott A. Crooker and Darryl L.G. Smith have demonstrated that strain can be used to control the spin of electrons flowing in bulk GaAs. They monitored the effects of applied electrical,...
Photonics Spectra, August 2005
Optically Active Quantum Dots Embedded in Nanowires
Investigators at the Swiss Federal Institute of Technology in Zurich have reported the fabrication of quantum dots in nanowires that display a level of brightness an order of magnitude higher than self-assembled InAs dots. They suggest that the work...
Photonics Spectra, August 2005
Packaging Advances High-Power White LEDs
High-power white LEDs are in high demand for automotive use and are a potential replacement for the incandescent lightbulb. But problems with size, heat dissipation and efficiency have taken researchers back to the drawing board to come up with new...
Photonics Spectra, August 2005
Silicon Photodiode Integrated Circuits Ready for Mass-Market Applications
The ever-increasing data rates of modern telecommunications networks demand low-cost optical interconnects between or within electronic systems to overcome the bottleneck of electrical interconnects. The interface between optical and electrical...
Photonics Spectra, August 2005
Using the Modulation Transfer Function on the Factory Floor
Although resolution has historically been a dominant parameter of image quality, it is clear that contrast also plays an instrumental role, particularly in terms of the speed and accuracy of machine vision systems. It should be noted that resolution...
Photonics Spectra, August 2005
(2,945 results found)

Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Photonics Spectra Now
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
Editorial Advisory Board
Contact Us
Career Opportunities
Teddi C. Laurin Scholarship

Terms & Conditions
Privacy Policy
California Consumer Privacy Act (CCPA)



©2025 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.