Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Lawrence Shah"'
Autor:
Felix Tan, Ayman F. Abouraddy, Alex Sincore, Ahmed Al Halawany, Kenneth L. Schepler, Justin Cook, Martin Richardson, Lawrence Shah
Publikováno v:
Optics express. 27(21)
The authors wish to acknowledge an additional funding source which was absent from our manuscript.
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 24:1-8
Thulium-doped fiber lasers (TDFLs) have had the second highest growth in average output power next to ytterbium-doped fiber lasers. This has been enabled by access to high power, high brightness ∼790-nm pump diodes in conjunction with the cross-rel
Autor:
Lawrence Shah, D. Maukonen, Daniel Thul, Matthieu Baudelet, Jessica Peña, Robert Bernath, Nathan Bodnar, Martin Richardson, Danielle Reyes, Joshua B. Bradford, S. Rostami Fairchild, Haley Kerrigan, Patrick Roumayah
Publikováno v:
Optics and Lasers in Engineering. 140:106519
We present the design, performance, and initial activation of the Mobile Ultrafast High Energy Laser Facility, a 5 TW near-infrared laser source located on a multi-km test range at Kennedy Space Center. The system is compact, readily transportable, a
Autor:
Ali Abdulfattah, Lawrence Shah, Joshua Bradford, Martin Richardson, Alex Sincore, Nathan Bodnar
Publikováno v:
Journal of Lightwave Technology. 35:4000-4003
Stimulated Brillouin scattering (SBS) is the first nonlinear effect that limits power scaling of narrow linewidth fiber lasers. Nonlinearities typically have a reduced impact when operating at longer wavelengths. However, the SBS gain is considered w
Autor:
Ilya Mingareev, Pankaj Kadwani, Ali Abdulfattah, Lawrence Shah, Nils Gehlich, Martin Richardson, Tobias Bonhoff, Alex Sincore
Publikováno v:
The International Journal of Advanced Manufacturing Technology. 84:2567-2578
A self-developed nanosecond-pulsed thulium fiber laser operating at the wavelength λ = 2 μm was used to selectively modify the front and the back surfaces of various uncoated and metal-coated silicon and gallium arsenide wafers utilizing transparen
Autor:
Kenneth L. Schepler, Ayman F. Abouraddy, Felix Tan, Anthony Riggins, Alex Sincore, Lawrence Shah, Martin Richardson, Justin Cook, Ahmed El Halawany
Publikováno v:
Laser Technology for Defense and Security XIV.
Defense sensing systems must be both productive and robust to accomplish their mission. Active infrared sensing devices consist of many components such as the active medium, mirrors, beam-splitters, modulators, gratings, detectors, etc. Each of these
Autor:
Joshua Bradford, Martin Richardson, Lawrence Shah, Alex Sincore, Nathan Bodnar, Ali Abdulfattah, Justin Cook
Publikováno v:
Laser Technology for Defense and Security XIV.
We report on a 2 μm master oscillator power amplifier (MOPA) fiber laser system capable of producing 700 μJ pulse energies from a single 1.5 m long amplifier. The oscillator is a single-mode, thulium-doped fiber that is Q-switched by an acousto-opt
Autor:
Ali Abdulfattah, Martin Richardson, Jose Enrique Antonio-Lopez, Lawrence Shah, Joshua Bradford, Justin Cook, Rodrigo Amezcua Correa, Stefan Gausmann, Axel Schülzgen, Patrick Roumayah, Dong Jin Shin, Alex Sincore
Publikováno v:
Laser Technology for Defense and Security XIV.
To advance the science of high power fiber lasers, in-house drawn specialty optical fibers are investigated. Ongoing research involves the fabrication and testing of Yb- and Tm-doped fibers at 1μm and 2μm. Using specialized fiber and pump mixing ge
Autor:
Jose Enrique Antonio-Lopez, Joshua Bradford, Lawrence Shah, Martin Richardson, Rodrigo Amezcua Correa, Justin Cook
Publikováno v:
Fiber Lasers XV: Technology and Systems.
This work investigates the feasibility of passive cooling in high-power Yb amplifiers. Experimentally, an all-glass airclad step-index (ACSI) amplifier is diode-pumped with 400W and provides 200W power levels. With only natural convection to extract
Autor:
Anthony Riggins, Kenneth L. Schepler, Lawrence Shah, Martin Richardson, Ahmed El Halawany, Justin Cook, Ayman F. Abouraddy, Felix Tan, Alex Sincore
Publikováno v:
Components and Packaging for Laser Systems IV.
Due to the intrinsic absorption edge in silica near 2.4 μm, more exotic materials are required to transmit laser power in the IR such as fluoride or chalcogenide glasses (ChGs). In particular, ChG fibers offer broad IR transmission with low losses 1