Hybrid optoelectronic modulators function without quantum wells | Laser Focus World

Optical modulators made of bulk III-V semiconductors can be integrated onto substrates such as silicon, sapphire, and glass to obtain high-contrast, low-insertion-loss performance.

Spire receives grants for x-ray medical imaging

More in Optics

Baffled by scatter? Do you have stray light problems?

Baffled by scatter? Do you have stray light problems?

We have the answers! Attend our “Mastering Stray Light Analysis” short course 30 October – 1 November 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.

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.”

FIGURE 1. The rubidium titanyl phosphate (RTP) Q-switch is assembled in a thermally compensated double-crystal configuration in which two matched crystals are placed in line with the propagation axis (x or y) with one crystal rotated by 90° with respect to the other.

Optical Materials: RTP optical crystal helps boost performance of LIGO

Upgrading the Laser Interferometer Gravitational-Wave Observatory (LIGO) included the addition of a rubidium titanyl phosphate (RTP) Q-switch to handle high optical powers.

Lawrence Livermore National Laboratory (LLNL) engineer Vincent Riot (left) has worked on the Large Synoptic Survey Telescope (LSST) for more than a decade and has been the full camera project manager since 2017. Riot and LLNL optical engineer Justin Wolfe, the LSST camera optics subsystems manager, stand in front of the LSST main lens assembly. Photo by Farrin Abbott/SLAC National Accelerator Laboratory.

LLNL ships world’s largest optical lens to SLAC for the LSST telescope

A key feature of the camera’s optical assemblies for the Large Synoptic Survey Telescope will be its three lenses--one with 1.57 m diameter.

II-VI dielectric-coated metal mirrors have use in industrial laser systems

Dielectric-coated metal mirrors for >15 kW fiber laser systems feature precision dielectric coatings deposited by ion beam sputtering (IBS).

A five-mile run in the morning before a workshop was one of EPIC’s community-building recipes.

Engaging with the photonics community

The European Photonic Industry Consortium (EPIC) is growing rapidly and fostering the photonics industry community in Europe and beyond.

Molex is opening an R&D facility in Bridgewater, NJ for wavelength selective switches for the growing datacenter interconnect market.

Molex opens New Jersey R&D facility for optical telecom components

The facility will be a center for excellence in wavelength selective switches for telecommunications and other high-performance networks.

An optical metamaterial surface plus liquid crystal form Lumotive's beam-steering approach for automotive lidar. This image is from Lumotive's website (www.lumotive.com).

Lumotive and Himax collaborate on metasurface approach to beam steering for lidar

Lumotive has an LCOS chip producer, Himax Technologies, for fabrication of its silicon-based metasurface beam-steerer.

The 200 mm wafers are contrasted in size with the new 300 mm wafers produced using nanoimprint lithography (NIL) to support glass technologies for augmented reality/mixed reality (AR/MR).

EVG & SCHOTT partner on 300 mm NIL wafers for AR/MR components

The work will take place at EVG’s NILPhotonics Competence Center, an open innovation incubator for nanoimprint lithography (NIL).

It has the size of a locomotive and will be a workhorse in fabs worldwide: The EUV stepper TWINSCAN NXE:3400B.

EUV lithography revisited

After three decades of development, a new generation of lithography machines has now been shipped; it uses extreme ultraviolet (EUV) light at a wavelength of 13.5 nm to make silicon features down to a few nanometers in size.

Application in Optical Design: Optimization for Receiver Enclosed Energy in LiDAR Systems

These sensors from the SmartSens/MEMS Drive partnership will feature added stabilization control to the rotation of the sensor, achieving optimal stabilization with no less than 5 axes.

SmartSens partners with MEMS Drive on CMOS chip-based image stabilization

The companies will collaborate on research in the field of CMOS chip-level optical image stabilization (OIS) technologies for new application areas.

James C. Wyant with Maria Ruiz in 2014, a first-year graduate student at the College of Optical Sciences, who that year received a Louise Wyant Memorial Scholarship in Optical Sciences. James Wyant and his family are now contributing $2 million and SPIE $500,000 to an educational-funding initiative for optics and photonics.

With $500,000 grant to University of Arizona, SPIE launches $2.5 million endowment matching program

Gooch & Housego (G&H) is partnering with Optex Systems to provide acrylic sighting instruments to the European market. Shown here are some Optex sighting systems.

Gooch & Housego partners with Optex to supply acrylic optics

The partnership combines Optex acrylic periscope products with G&H’s next-generation glass periscope hardware portfolio.