Hillsboro, OR, United States
Hillsboro, OR, United States
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Alias M.S.,Microelectronics and Nanotechnology Program | Shaari S.,National University of Malaysia | Leisher P.O.,nLIGHT Corp. | Choquette K.D.,University of Illinois at Urbana - Champaign
Photonics and Nanostructures - Fundamentals and Applications | Year: 2010

Single transverse mode control is achieved for multimode GaAs-based VCSEL by utilizing photonic crystal design and etched trench structure. Theoretical analysis is initially performed for photonic crystal design with various lattice constants and air holes diameter. The fabricated photonic crystal VCSEL with etched trench structure exhibits single mode output power of 0.7 mW, threshold current of 3.5 mA, slope efficiency of 0.10 W/A, and continuous single mode output spectrum throughout a wide operating current range. Comparison of typical oxide VCSEL, trench oxide VCSEL, and photonic crystal oxide VCSEL employing trench structure is presented. By combining photonic crystal and trench structure, single transverse mode operation of photonic crystal VCSEL can be much more strictly controlled. © 2010 Elsevier B.V. All rights reserved.


Alias M.S.,Microelectronics and Nanotechnology Program | Shaari S.,National University of Malaysia | Leisher P.O.,nLIGHT Corp. | Choquette K.D.,University of Illinois at Urbana - Champaign
Applied Physics B: Lasers and Optics | Year: 2010

In this letter, we report on single-mode operation of originally multi-mode oxide VCSEL by using etched photonic crystal air holes and unique trench structure. The device fabrication utilized conventional photolithography; with simplified lithography step of self-aligning the photonic crystal and trench structures to the laser aperture for efficient and vigorous device processing. The fabricated photonic crystal VCSEL with trench device exhibits a singlemode output power of 0.7 mW, threshold current of 3.5 mA, slope efficiency of 0.10 W/A, and continuous single-mode output spectra at wide operating current range. The results are compared with conventional multi-mode oxide VCSEL of similar device geometry. In addition, theoretical analysis is presented for developing further understanding of the photonic crystal VCSEL. © Springer-Verlag 2010.


Montiel I Ponsoda J.J.,Aalto University | Norin L.,Acreo Ab | Ye C.,nLIGHT Corp. | Bosund M.,Beneq Oy | And 3 more authors.
Optics Express | Year: 2012

We report on a new fabrication method of producing ytterbium doped fibers by atomic layer deposition (ALD) in combination with the conventional modified chemical vapor deposition (MCVD) technique. An MCVD soot-preform with a porous layer of SiO2 is coated with layers of Yb2O3 and Al2O3 prior to sintering, using the gas-phase ALD method. An SEM/EDS material analysis study shows that the dopants successfully penetrate the full thickness of 320 μm of the soot layer. An Yb-doped fiber fabricated by this technique shows a background attenuation of 20 dB/km, a uniform longitudinal Yb-doping profile, and good laser characteristics with a slope efficiency of 80%. Furthermore, we present a comparison in terms of photodarkening between the MCVD-ALD fiber and a solution doped fiber, fabricated with the same MCVD recipe. The new MCVD-ALD fiber appears to be more photodarkening resistant. © 2012 Optical Society of America.


Di Teodoro F.,Northrop Grumman | Di Teodoro F.,The Aerospace Corporation | Morais J.,Northrop Grumman | McComb T.S.,Northrop Grumman | And 5 more authors.
Optics Letters | Year: 2013

We report on a compactly packaged Yb-doped fiber-based laser architecture featuring an actively pulse controlled, single-longitudinal-mode seeder and multistage amplifier chain terminated by a "folded" rod-type photonic crystal fiber. In this laser source, stimulated Brillouin scattering (SBS) is the power-limiting factor, but is managed by phase modulating the seeder with a pseudo-random noise signal. Pulse energy/peak power of ∼2 mJ/1.5 MW at 10 kHz repetition rate are thus obtained within ∼1.55 ns pulses of peak spectral brightness 20 kW cm-2 sr-1 Hz-1. © 2013 Optical Society of America.


Palese S.,Northrop Grumman | Cheung E.,Northrop Grumman | Goodno G.,Northrop Grumman | Shih C.-C.,Northrop Grumman | And 3 more authors.
Optics Express | Year: 2012

Two high pulse contrast (> 95 dB) polarization maintaining all-fiber amplifier chains were coherently combined to generate 0.42 mJ, 1 ns 25 kHz pulses with 79% efficiency despite 38 radians of intra-pulse phase distortion. A recursive intra-pulse phase compensation method was utilized to correct for the large nonlinear chirp providing a path for improved coherent waveform control of nanosecond pulse trains. © 2012 Optical Society of America.


News Article | May 8, 2015
Site: www.nlight.net

Designed to meet the high-performance and high-reliability requirements for Microfabrication, nLIGHT helix™ is programmable, enabling ultra-stable pulses with highly flexible parameters including burst mode, pulse duration and repetition rate. It utilizes nLIGHT’s state-of-the-art 3C® fiber technology to enable unmatched beam quality and stability from a fiber capable of achieving multi-hundred kW peak powers. “nLIGHT helix™ gives customers the flexibility to address multiple applications with a single laser,” said Scott Keeney, President and CEO of nLIGHT. “nLIGHT helix™ represents the first of many next generation fiber laser products we will be announcing this year.” Engineered for ease of integration into any laser machine tool, helix™ offers a small footprint with the ability to mount in any orientation. nLIGHT helix™ delivers a variety of rep rates, is burst mode capable and offers multiple Microfabrication solutions from a single, all-fiber platform. Learn more about nLIGHT helix™ at Photonics West 2015, February 10 - 12, 2015, at the nLIGHT booth in the South Hall, Booth #1641. nLIGHT is a vertically integrated supplier of high-performance lasers enabling innovation in materials processing, defense, and medical applications. nLIGHT develops and manufactures direct diode and fiber lasers based on industry leading semiconductor laser and optical fiber technology. For more information see www.nLIGHT.net. – nLIGHT introduced today a new picosecond fiber laser, nLIGHT helix™, the industry’s first programmable pulsed fiber laser for high-precision micro-materials processing applications. The compact, air-cooled system delivers 300kW peak power, picosecond pulse-width and up to 25W average power.


News Article | May 9, 2015
Site: www.nlight.net

nLIGHT alta™ incorporates the industry’s most durable back reflection isolation technology which enables processing of highly reflective materials. It is the industry’s first laser that is truly serviceable by customers in the field. “nLIGHT is committed to world class customer service,” said Scott Keeney, President and CEO of nLIGHT. “nLIGHT alta™ enables industrial metal cutting and welding integrators to serve their customers better with a clear alternative to legacy fiber lasers.” Learn more about nLIGHT alta™ and future products at Laser World of Photonics China, March 17 - 19, 2015, at the nLIGHT booth in Hall N3, Booth #3352. nLIGHT manufactures next generation fiber lasers based on industry-leading diode and fiber technology and vertically integrated global operations. For more information see www.nLIGHT.net. – nLIGHT introduced today nLIGHT alta™, a next generation family of industrial fiber lasers with power levels up to 3000 watts. The new product family leverages nLIGHT’s industry leading diode and fiber technology and vertically integrated manufacturing.


News Article | April 30, 2015
Site: www.oregonlive.com

Clark County laser manufacturer nLight Corp. reported a $25.3 million investment in a regulatory filing Thursday, but did not disclose the source of the funds or how it plans to spend it. Update, Friday: Chief executive Scott Keeney says the money will help fund a new factory in Vancouver. He promised he would have more to say in the near future. Founded: 2000, in Seattle. Headquarters moved to Clark County in 2002. Business: Semiconductor lasers for industrial, defense and consumer applications. Customers include heavy industry, smartphone makers, and consumer products. Employees: 450 worldwide as of 2013, including 225 in Clark County and 75 in Hillsboro. Investment: Venture capitalists put $60 million into the company during the dot-com era. Total investment in the company now tops $110 million, including a $17.5 million round in 2011 led by Samsung. The company, whose headquarters are just north of Vancouver, had previously disclosed more than $110 million in investment dating back to its founding in 2000. It also has operations in Hillsboro. Originally, nLight planned to market its laser technology to telecommunications companies. After the dot-com bust, though, nLight repurposed its lasers for industrial companies and consumer electronics manufacturers. Its backers include South Korean electronics giant Samsung. Thursday's filing with the U.S. Securities and Exchange Commission indicates the company has attracted new equity investment. But those filings frequently give an incomplete picture of a company's activities, and nLight declined to comment on its plans. As of March 2013 nLight had 450 employees worldwide – including 225 in Clark County and another 75 in Hillsboro. Earlier this month, nLight won a share of a $26 million contract to build missiles for the U.S. Navy and Air Force.


News Article | May 10, 2015
Site: www.nlight.net

nLIGHT manufactures next generation fiber lasers based on industry-leading diode and fiber technology and vertically integrated global operations. For more information see www.nLIGHT.net. – nLIGHT, the technology leader in semiconductor and fiber lasers, announced today a new 4000 W fiber laser for advanced industrial metal cutting and welding applications. Unlike legacy fiber lasers, nLIGHT alta™ provides uninterrupted full-power processing of all materials including highly reflective metals."nLIGHT is committed to delivering innovative solutions utilizing the world's best fiber laser technology," said Scott Keeney, President and CEO of nLIGHT.Customers benefit from faster metal-piercing and improved fine-feature processing as a result of advanced laser electronics. Both uptime and lifecycle costs are improved as a result of nLIGHT's proprietary fiber laser architecture, which allows users to manage common field service events. After extensive customer qualification and high volume deployment, nLIGHT alta™ is the new standard for Industrial fiber laser applications.Laser World of Photonics is one of the largest and well respected international trade fairs for the laser and photonics industry. Learn more about nLIGHT alta™ fiber lasers at nLIGHT's Forum presentation on Wednesday, June 24th at 13:40 in Hall B3.Visit nLIGHT at Laser World of Photonics, June 22 - 25 2015, Booth #A2.331.

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