Tag Archives: Infrared Antireflection

Weekly Lasers Wrap Up – Week of September 19, 2016

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Bringing you up to speed on the latest updates in laser industry news, LIA updates, and other laser-related developments, the Weekly Wrap-Up aggregates all that you may have missed this week:

Industry News:

In a recent trade advisory, OSHA announced that they will be sharing safety and health updates via Twitter. The account @OSHA_DOL will provide information to the public regarding OSHA initiatives, activities, publications, and more! OSHA encourages professionals to share these updates within their own networks. LIA will be sharing all laser industry-related updates at our own Twitter handle @laserinstitute. Check out our summary of the advisory here.

Manufacturing Day takes place October 17 This year’s theme is “Opening Doors and Minds.” LIA will be covering all Manufacturing Day updates on Twitter. Check out #MFGDay16 to stay up to date on all activities and insights throughout the day — and stay tuned for more LIA Manufacturing Day updates!

Multi-beam laser additive manufacturing process

Researchers at the Photonics Institute at Vienna Institute of Technology have developed a device that “emits super short flashes of infrared light with extremely high energy.” Combining long infrared wavelength, short duration, and high energy, the pulses are able to be compressed, without sacrificing the energy. Check out the original article on Science Daily here.

LIA Updates:

LIA remembers Laser Safety Community Leader Darrell Seeley. Seeley was a renowned laser safety teacher and consultant. He passed away August 16, 2016, after battling cancer. Seeley was 66 years old. Read our tribute to his memory here.

Conference News:

ICALEO is less than a month away! Registration for this premiere conference is still open. ICALEO takes place October 16-20, 2016 in San Diego, CA. Review photos from last year’s event here.

ICALEO 2016 is almost here! View photos from last year’s event.

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The Laser Institute of America (LIA) is the international society for laser applications and safety. Our mission is to foster lasers, laser applications, and laser safety worldwide. Visit us at www.lia.org

Ultrafast Laser Hybrid Fabricating of Macro-Micro-Nano-Nanowire Multi-Scale Structures for Near Perfect Infrared Antireflection

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By Peixun Fan and Minlin Zhong

Infrared antireflection surfaces are of great realistic significance in wide fields including infrared imaging, sensors, thermoelectrics, stealth, artificial blackbody, etc. However, efficient infrared antireflection property still remains a major challenge, especially on metal surfaces which are usually inherent excellent reflectors at the infrared wavelength regime. Until now, few reports of near unity infrared AR property reaching reflectance below 1 percent and fewer reports of broadband near unity AR strategies which keep effective through the spectrum of 5~25 μm on metal surfaces have been demonstrated. It is known that the high optical impedance between metal and the free space is the culprit accounting for the severe apparent reflection of metal surfaces. An effective method for alleviating the optical impedance is to introduce a transitional medium. The semiconductor materials, metal oxide in particular, are expected to be good candidates to realize such a purpose. However, it’s technically difficult to steadily produce a uniform as well as highly efficient oxide layer on metal surfaces. Here, we propose a novel ultrafast laser hybrid processing approach to tackle this fundamental challenge. By forming precursor micro-nano structures via ultrafast laser, oxide in the unique structural form of nanowires is facilely and uniformly grown on Cu surfaces after a subsequent simple thermal oxidation process. Continue reading →