Demonstration of extreme ultraviolet (EUV) sources delivering tens of watts to wafers is a major milestone, and shipments will begin later this year. But serious challenges remain...
New developments in swept light sources such as VCSELs with long coherence lengths and akinetic swept sources with pure electrical tuning are enabling high-resolution, high-speed...
Hollow-core fibers designed via the "perturbed resonance for improved single modedness" (PRISM) approach rapidly attenuate higher-order modes while allowing the fundamental mode...
With embedded, onboard microprocessors for rapid spectral manipulation, a USB 3.0 communication port for faster data transfer, and an ultrafast trigger delay to monitor up to ...
Internationally, many efforts are underway to support innovation and growth in photonics-which in turn promises to help society in so many fundamental ways.
The solar photovoltaic (PV) industry continued to grow in 2012, reaching 29 GW of PV demand. However, massive overcapacity and oversupply impacted PV manufacturers (especially...
In my many years as an entrepreneur in the photonics industry, owners and managers of photonics companies have been asking me if it makes sense for them to consider selling in...
Developers of hollow-core fibers announced two important firsts in a March 21, 2013 postdeadline paper at this year’s Optical Fiber Communication Conference and Exhibition and...
A research team at Arizona State University (ASU) led by Cun-Zheng Ning has created an electrically pumped continuous-wave nanolaser that reliably operates at room temperature...
Recent progress on integrating gallium antimonide (GaSb) lasers and photodetectors on a silicon-on-insulator (SOI)-based photonic integrated circuit (PIC) platform using CMOS ...
A new way of capturing images based on a flat, flexible, transparent, and potentially disposable polymer sheet has been developed at Johannes Kepler University Linz in Austria...
Lead sulfide/cadmium sulfide (PbS/CdS) quantum dots (QDs) that absorb 980 nm pump light and emit in the 1400–1600 nm region are at the heart of an optical fiber amplifier developed...
Oclaro engineers have dramatically miniaturized their red laser diodes: Four-beam devices have decreased in volume by 75% (from TO 9.0 mm can packages to TO 5.6 mm cans) and eight...
By monolithically integrating a tiled array of optical interference filters on top of standard CMOS image sensors, imec has developed a compact, high-resolution “snapshot” multispectral...
![FIGURE 1. Absorbances of selected gas species with technological relevance in the range from 3–6 μm (a). Comparison of three different laser concepts for emission in the 'gap' region from 3–6 μm (b). Threshold power densities at room temperature are illustrated. Diode lasers are color-coded in black (results from University of Würzburg, Germany/nanoplus, Germany). Quantum-cascade lasers are red (results from Northwestern University, USA/Alpes Lasers SA, Switzerland). Interband-cascade lasers show significantly lower threshold power densities in the 3–6 μm range (green: results from Naval Research Laboratory, USA; blue: results from University of Würzburg, Germany). DFB ICLs with low power consumption for the entire range are feasible [compare DFB laser (green star) to BA results].](https://img.laserfocusworld.com/files/base/ebm/lfw/image/2016/01/1305lfw06f1.png?auto=format,compress&fit=crop&q=45&h=139&height=139&w=250&width=250 "FIGURE 1. Absorbances of selected gas species with technological relevance in the range from 3–6 μm (a). Comparison of three different laser concepts for emission in the 'gap' region from 3–6 μm (b). Threshold power densities at room temperature are illustrated. Diode lasers are color-coded in black (results from University of Würzburg, Germany/nanoplus, Germany). Quantum-cascade lasers are red (results from Northwestern University, USA/Alpes Lasers SA, Switzerland). Interband-cascade lasers show significantly lower threshold power densities in the 3–6 μm range (green: results from Naval Research Laboratory, USA; blue: results from University of Würzburg, Germany). DFB ICLs with low power consumption for the entire range are feasible [compare DFB laser (green star) to BA results].")
![FIGURE 1. A solid model of the 1310 nm MEMS-VCSEL. The device combines an epitaxial half-VCSEL (including a GaAs/AlxOy DBR and InGaAs active region) with a dielectric suspended mirror structure. The structure is optically pumped through the top mirror. Wavelength tuning is realized via an integrated electrostatic actuator [1].](https://img.laserfocusworld.com/files/base/ebm/lfw/image/2016/01/1305lfw03f1.png?auto=format,compress&fit=crop&q=45&h=139&height=139&w=250&width=250 "FIGURE 1. A solid model of the 1310 nm MEMS-VCSEL. The device combines an epitaxial half-VCSEL (including a GaAs/AlxOy DBR and InGaAs active region) with a dielectric suspended mirror structure. The structure is optically pumped through the top mirror. Wavelength tuning is realized via an integrated electrostatic actuator [1].")
