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Meadowlark Optics - Wave Plates 6/24 LB 2024
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Fiber Laser Generates 1.6 W in Single Longitudinal Mode
Dec 1, 2005 — Researchers at the University of Arizona’s College of Optical Sciences in Tucson have generated 1.6 W at 1550 nm in a single longitudinal mode from a short, cladding-pumped Er:Yb codoped fiber laser. They believe that theirs is among the highest-power single-frequency fiber lasers that have been demonstrated to date. Single-frequency fiber lasers are important in telecommunications and as the light source in many fiber sensing applications. Figure 1. The centimeters-long, single-mode Er:Yb...
Maskless Photolithography May Offer Cost Advantage
Dec 1, 2005 — Conventional lithography achieves sub-100-nm features by using short-wavelength light, immersion technology and optical enhancements such as phase-shift masks. But the dramatically increasing cost of the latter makes alternative, maskless...
More Bandwidth from Molecules of Light
Dec 1, 2005 — At Universität Rostock in Germany, researchers may have found a way to squeeze more bandwidth out of today’s telecommunications infrastructure. They have demonstrated the existence of molecules of temporal solitons, or permanent solitary waves. Such...
Multimode Fiber Thinks It’s Single-Mode
Dec 1, 2005 — In an unusual intersection of fiber optics and astronomy, a collaboration of British and Australian scientists has yielded a technique that they believe could revolutionize ground-based infrared astronomy. Bright and narrow spectral lines from...
Near-Field Solid-Immersion Mirror Records Data Optically
Dec 1, 2005 — Investigators at Seagate Technology’s research laboratory in Pittsburgh have demonstrated a near-field planar solid-immersion mirror that could usher in higher optical data storage densities than what magnetic media offer. The approach offers...
New Project Aims to Coordinate Research
Dec 1, 2005 — Merging Optics and Nanotechnologies is a project begun by the European Commission to maintain Europe’s competitiveness in the photonics and nanotechnology markets by increasing collaboration among researchers. MONA, as the project is called, has...
Optical Switch in Silicon Relies on Photonic Crystal
Dec 1, 2005 — All-optical switching — in which light in a “control” beam switches light in a “signal” beam on or off — is the fundamental building block of such cutting-edge photonics technologies as telecommunications and optical computing. Moreover, optical...
Photonics Examines Pharmaceuticals at Environmental Interfaces
Dec 1, 2005 — With the increased use of antibiotics, hormones, herbicides and pesticides in agriculture, the environmental effects of these substances have become a concern. The discharge of veterinary antibiotics can lead to drug resistance in target microbes,...
Silica Nanotubes Loaded with Laser Dyes
Dec 1, 2005 — A team of scientists in South Korea has used a sol-gel process to fabricate color-tunable silica nanotubes that incorporate functional laser dyes. The investigators suggest that the one-dimensional structures may form the basis of new nanoscale...
Silicon-Based Laser Emits in Visible
Dec 1, 2005 — Although much of the excitement about silicon lasers in this year has centered on silicon Raman lasers investigated at Intel Corp. and at the University of California, Los Angeles, other re- searchers have pursued other promising approaches to...
Single-Mode Fiber Laser Generates 125 W Tunable over 20 nm
Dec 1, 2005 — Powerful single-frequency lasers are required for many scientific and engineering undertakings, such as gravity-wave detection and coherent combination of multiple beams. Such sources also have potential as very high power transmitters in...
Technique Auto-Aligns Fiber to a Waveguide
Dec 1, 2005 — The high cost of actively aligning components in photonic devices is one of the major barriers to a generation of inexpensive, mass-produced photonic equipment. Indeed, Intel Corp.’s Photonics Technology Lab of Santa Clara, Calif., has identified...
Tiny Ring Resonator in Silicon Is a Wavelength Converter
Dec 1, 2005 — Wavelength converters perform the important function of changing an optical signal from one wavelength to another. Such a capability is vital, for example, when a channel to be added to a wavelength-multiplexed fiber has the same wavelength as an...
Erbium Fiber Laser Generate Supercontinuum
Nov 1, 2005 — Researchers at the University of Tokyo have demonstrated a compact, self-contained supercontinuum laser based on the addition of a length of highly nonlinear dispersion-shifted fiber inside the resonator of an erbium-doped fiber ring laser. The...
External Resonator Sharpens Diode Array Bandwidth
Nov 1, 2005 — Monolithic arrays of laser diodes find wide application as pumps for solid-state lasers, but their natural bandwidth of several nanometers usually is wider than the absorption of the active ion in the solid-state laser. This mismatch often leads to...
Gratings Couple Optical Fibers to Silicon Photonic Devices
Nov 1, 2005 — Advances in silicon photonics have ignited an intense interest in optical devices based on silicon (see pages 53, 62 and 68). An inherent problem with the application of this technology, however, is the low efficiency with which light can be coupled...
Intracavity Raman Laser Is Continuous-Wave
Nov 1, 2005 — Although pulsed Raman lasers have been thoroughly investigated during the past two decades, only a few continuous-wave devices have been built. While such non-pulsed lasers would be useful in many applications, the drawback has been that the high...
Low-Temp Fabrication of Piezoelectric Microactuators Demonstrated
Nov 1, 2005 — Scientists at Pennsylvania State University in University Park have produced flextensional microactuators the width of a human hair using a low-temperature bonding process. The devices feature a precision micromachined silicon beam coupled to lead...
New Nonlinear Crystal for Infrared OPOs
Nov 1, 2005 — A collaboration of scientists in France, Russia and Germany has demonstrated an optical parametric oscillator (OPO) based on a new nonlinear crystal, lithium selenoindate (LiInSe2, abbreviated LISe). The investigators believe that their results are...
Parametric Amplifier Shows Potential for Telecom
Nov 1, 2005 — The erbium-doped fiber amplifier (EDFA) was one of the most important enabling technologies behind the fiber optic telecommunications boom of the 1990s. Because optical signals are attenuated as they travel through fiber, they must be periodically...
Probe Array Patterns and Images Nanoscale Features
Nov 1, 2005 — As reported in the October issue of Nano Letters, researchers at the cat Urbana-Champaign have designed and fabricated a multifunctional probe array for direct chemical pattern generation and imaging. The individually addressable, thermoelectrically...
Superlensing Demonstrated in the Mid-IR
Nov 1, 2005 — Researchers at the University of Texas at Austin and at Case Western Reserve University in Cleveland have created a functional superlens in the mid-infrared, achieving a resolution of better than λ/10 using an 11-µm source. Using optical...
Tungstate Laser Generates Raman Output
Nov 1, 2005 — The family of ytterbium-doped potassium tungstate lasers has been frequently investigated in recent years and has spawned at least four entries in the commercial market -- the Spectra-Physics Eclipse, the Amplitude Systemes t-pulse and s-pulse, and...
UCSD Dedicates Research Facility Friday
Oct 27, 2005 — SAN DIEGO, Oct. 27 -- The California Institute for Telecommunications and Information Technology's (Calit2) new research facility at the University of California, San Diego (UCSD) will be officially dedicated in a ceremony on Friday, Oct. 28. From...
UCSD to Dedicate Research Facility
Oct 27, 2005 — SAN DIEGO, Oct. 27 -- The California Institute for Telecommunications and Information Technology's (Calit2) new research facility at the University of California, San Diego (UCSD) will be officially dedicated in a ceremony on Friday, Oct. 28. From...

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