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Optical Fiber

Polymicro Technologies (Lisle, IL) has successfully developed a broad spectrum optical fiber with a low -OH pure silica core that demonstrates significantly reduced content of UV defects and other UV absorption centers. Polymicro’s proprietary FBPI fiber leverages the benefits and mitigates the limitations of standard optical fibers. Featuring improved transmission properties over a much wider spectral range, the silica-based, broadband FBPI fiber is available in a range of densities and can be produced in core diameters from 50-600 μm.

Posted in: Products, Photonics

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Fast Axis Collimators

Edmund Optics (EO) (Barrington, NJ) has introduced new fast axis collimators. These versatile lenses are designed for beam shaping or laser diode collimation applications. Fast Axis Collimators are compact, high performance aspheric cylindrical lenses, designed for fast axis collimation. The combination of aspheric cylindrical lens designs and high numerical apertures (N.A.) deliver uniform collimation of the entire laser diode output while maintaining excellent beam quality. Fast Axis Collimators feature a standard AR coating for 790-990 nm and provide greater than 99% transmission across the designated spectral range. Fast axis collimators measure 12 mm long and are available in five models with focal lengths of 0.29 mm, 0.365 mm, 0.59 mm, 0.91 mm and 1.49 mm.

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45W UV Laser

Spectra-Physics® (Santa Clara, CA), a Newport Corporation brand, recently introduced Quasar 355-45, a UV laser that delivers >45W (225 μJ) at exceptionally high repetition rates. The laser features TimeShift™ technology for pulse shaping and burst-mode operation as well as programmable pulse widths from 100 ns over repetition rates from 0 to 1 MHz – factor of 2 improvements in repetition rate range and minimum pulse width over the recently introduced >40W Quasar 355-40.

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638nm Fiber-Coupled Tailored Bar Modules

DILAS (Mainz, Germany) now delivers 40W output power from a T-bar based 638nm 400-micron/0.22NA, fiber-coupled module used for cinema projection. Through the optimization of semiconductor chip structures and optical parameters, DILAS’ tailored bar (T-Bar) architecture delivers high beam quality and high power using standard micro-optic fast-axis collimators (FAC) and slow-axis collimators (SAC), all assembled with automated processes. The T-Bar is a monolithic multi-emitter source, allowing the handling of multiple emitters during each manufacturing step, to lower complexity and ease manufacturing. The result is enhanced reproducibility, beam quality and fiber coupling efficiency. Extending the T-Bar based scalable concept, more advanced modules will soon be made available to enable development and commercialization of high power diode laser based RGB projection laser systems.

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Micro-Endoscope as Thin as a Human Hair

Single fiber endoscope increases resolution fourfold over previous similar devices. Engineers at Stanford University have developed and demonstrated a prototype single-fiber endoscope that, they say, quadruples the resolution over existing designs, which might lead to the development of needle-thin, minimally invasive endoscopes able to view features out of reach of today’s instruments.

Posted in: Bio-Medical, Imaging & Diagnostics, Monitoring & Testing, Electronics, Optics/Photonics, Imaging, Photonics, Fiber Optics, Optics, Medical, Diagnostics, Briefs, MDB

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Choosing Chiller Pumps to Cool Medical Lasers

Medical lasers must be cooled either by premounted or portable chiller systems. Laser systems continue to grow in application use throughout the medical industry. Applications for laser systems include diagnostic analysis systems, DNA sequencing systems, dental cleaning and surgery, skin care, eye surgery, tattoo removal, and much more. These systems commonly require cooling of the laser and other electronic components either by air flow on lower power laser systems, or by fluid circulation/chiller systems on higher power lasers. Higher power laser require an increased level of cooling capacity that results in systems that provide several gallons per minute of fluid circulation. This increased flow rate will maintain the laser and other electronics at the proper operating conditions.

Posted in: Bio-Medical, Manufacturing & Prototyping, Custom & Contract Manufacturing, Drug Delivery & Dispensing, Mechanical Components, Photonics, Lasers & Laser Systems, Medical, Drug Delivery & Fluid Handling, Briefs, MDB

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New Material Enables Improved Ultrasound

Ultrasound technology could soon be improved to produce high-quality, high-resolution images, thanks to the development of a new key material by a team of researchers in the Department of Biomedical Engineering at Texas A&M University, College Station.

Posted in: Bio-Medical, Imaging & Diagnostics, Optics/Photonics, Imaging, Optics, Materials, Metals, Medical, Patient Monitoring, Diagnostics, Nanotechnology, Briefs, MDB

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