A final note for Optoelectronics Report readers

NASHUA, NH--As the editor for Optoelectronics Report for the past few years, I'd like to include a special thanks in this final issue to our production editor, Dawn Adams, for her years of tireless work in making this newsletter look good.

Mar 15th, 2010

NASHUA, NH--As the editor for Optoelectronics Report for the past few years, I'd like to include a special thanks in this final issue to our production editor, Dawn Adams, for her years of tireless work in making this newsletter look good. In addition, the newsletter could not have been completed every two weeks without the help of its many contributing editors--especially Barbara Goode, chief editor of BioOptics World, and John Wallace, senior editor of Laser Focus World.

Please note that Optoelectronics Report is not really going away, it is simply transitioning to an online Business Center on the Laser Focus World website that will not only include originally reported business news in text form, but also industry videos and interviews that can only be brought to you in an online, digital-media format. Please visit our Business Center at www.optoiq.com/index/photonics-technologies-applications/lfw-business-center.html. As always, I welcome your opinions and story ideas to continuously improve the photonics business-news content of Laser Focus World; please send your emails to [email protected]

--Gail Overton

More in Home
Optically Pumped Semiconductor Laser Advantages: Wavelength Flexibility
Sponsored
Optically Pumped Semiconductor Laser Advantages: Wavelength Flexibility

Learn more about the unique wavelength scaling advantage of Optically Pumped Semiconductor Laser technology that is a major reason behind the widespread use of OPSLs in life sciences, light shows, and beyond.

Aug 28th, 2019
1909 Lfw Nb F1
Detectors & Imaging
Antimonide-based SAM-APDs make sensitive gamma-ray detectors

Using carefully grown GaSb/AlAsSb heterostructures that act as separate absorption and avalanche layers, gamma rays are easily absorbed and multiplied with high signal-to-noise ratio for sensitive gamma-ray detection.

Gail Overton
Sep 17th, 2019
FIGURE 1. A flowchart shows the point-by-point design method used to create imaging optics systems from both freeform and planar phase elements.
Optics
Imaging Optics: Freeform and planar phase elements combine for better imaging optics

Using an iterative process that begins with simple geometric planes, freeform surfaces combine with flat phase elements to create compact, lightweight, easily aligned optical imaging systems.

Sep 17th, 2019
FIGURE 1. The new diode laser can emit more than 400 W; however, its point of operation is chosen to be about 275 W to achieve maximum conversion efficiency.
Lasers & Sources
High-power Laser Diodes: Diode-laser enhancements boost efficiency and reliability

Passively cooled high-power laser diodes with nonsoldered joints and new cooling scheme show high reliability under hard-pulsed and continuous-wave operation.

Sep 17th, 2019
FIGURE 1. In a Fizeau interferometer, the reflected beam from the reference surface and the reflection from the test surface combine and both reverse their direction, passing through the same optics on their way to the camera.
Test & Measurement
Interferometry: Tradeoffs in fixed vs. continuous-zoom interferometry factor into optics test optimization

Digital-, discrete-, and continuous-zoom configurations can optimize testing of large and small optics with modern interferometers; however, each method has tradeoffs that users should be aware of when considering a solution.

Sep 17th, 2019
This Cell Atlas diagram allows interactive investigation, and it’s backed by a database for exploring details of individual genes and proteins, as well as systematically analyzing transcriptomes and proteomes in broader contexts.
Detectors & Imaging
High-resolution Imaging: AI opens a new era in scientific imaging

Today’s game-changers in optical microscopy are not the usual suspects.

Sep 17th, 2019
FIGURE 1. These freeform optics were designed in LightTools (a). The software can help identify manufacturing tolerances for tailored surfaces used in freeform optics for illumination. Head models are created from image data using Synopsys Simpleware software (b). Simpleware can be used in conjunction with LightTools to run detailed optical scenarios in 3D anatomical models for biomedical applications.
Software
Illumination Optical-design Software: Illumination-design software optimizes complex geometries

In its many different forms, illumination-design software models and optimizes complex optics and the illumination fields that they produce.

John Wallace
Sep 17th, 2019
Test & Measurement
IceCube ice anisotropy could be due to birefringent polycrystals

A twofold difference in ice attenuation in perpendicular directions in the IceCube experiment could be explained by a birefringent structure of the microcrystals in the ice.

John Wallace
Sep 17th, 2019
A photonic crystal (PhC) with a heterostructure cavity achieves double resonance even though it has only one bandgap, not two; the second resonance is provided by a “bound state in the continuum” (BIC). The heterostructure cavity includes a core, a transition region, and an outer region (delineated here by dotted lines). The relevant resonant mode is confined to the core region. Creating such a PhC out of a nonlinear optical material allows PhC-based optical frequency doubling for the first time.
Optics
Nonlinear Optics: Light-trapping, frequency-doubling photonic crystal is first of its kind

The photonic crystal traps the fundamental frequency via a conventional bandgap and the doubled frequency using a “bound state in the continuum.”

John Wallace
Sep 17th, 2019
Biological nanomaterials with fluorescence properties, DNA-stabilized metal quantum clusters promise to enable quick and reliable biosensors.
Research
Biosensors: Quantum technology promises better biosensors

Applying quantum technology to biosensing, for example, using DNA-stabilized metal ‘quantum clusters,’ will help extend the capabilities of modern optical biosensing.

Barbara Gefvert
Sep 17th, 2019