Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Jonah H. Jacob"'
Publikováno v:
Optics express. 22(15)
The slab coupled optical waveguide laser (SCOWL) is a promising candidate for high power, single mode emitter for a number of reasons, including its near diffraction limited optical quality, large modal size and near circular output pattern. Current
Publikováno v:
SPIE Proceedings.
Recent advances in thermal management and improvements in fabrication and facet passivation enabled extracting unprecedented optical powers from laser diodes (LDs). However, even in the absence of thermal roll-over or catastrophic optical damage (COD
Autor:
Leo J. Missaggia, Jonah H. Jacob, George W. Turner, Joseph P. Donnelly, Mehmet Dogan, G.M. Smith, Michael K. Connors
Publikováno v:
SPIE Proceedings.
Dense array slab-coupled optical waveguide lasers (DASCOWLs) consist of several hundred single-mode SCOWL lasers on a monolithic bar. Near diffraction-limited output of the SCOWLs is preserved with spacing down to 40μm. Greater than 200W CW operatio
Autor:
R. Pathak, Aland K. Chin, K. D. Lang, Jonah H. Jacob, J. G. Manni, Jack Merrill Fryer, R. H. Chin, T. Haverkamp, Mehmet Dogan, Henry Eppich, J. Levy, C. Wessling
Publikováno v:
SPIE Proceedings.
We present a novel, high-power stack of 20% fill-factor, 976nm, laser-diode bars, each directly attached to an enhanced lateral-flow (ELF), copper-based, water-cooled heat-sink. The heat-sinks contain mounting screws that form a kinematic mount to mi
Autor:
Jonah H. Jacob, Wenyang Sun, Jack Merrill Fryer, R. Pathak, Aland K. Chin, Geoff Campbell, Henry Eppich
Publikováno v:
SPIE Proceedings.
The slow axis (SA) divergence of 20% fill-factor, 980nm, laser diodes (LDs) have been investigated under short pulsed (SP) and continuous (CW) operation. By analyzing the data collected under these two modes of operation, one finds that the SA diverg
Autor:
Nicholas F. Gmur, W. M. Lavender, A.C. Thompson, William Thomlinson, Joseph A. Mangano, Dean Chapman, Jonah H. Jacob, N. Malloy, K. Scalia
Publikováno v:
Review of Scientific Instruments. 66:1357-1360
Since October 1990, the coronary anatomies of a total of 16 patients (male and female) have been imaged at the National Synchrotron Light Source (NSLS) as part of the Dual Energy Digital Subtraction Transvenous Coronary Angiography research program.
Autor:
Geoff Campbell, S. Fulghum, Jonah H. Jacob, Henry Eppich, R. Pathak, Aland K. Chin, K. D. Lang, R. H. Chin, Mehmet Dogan, M. Knapczyk, J. T. Vignati, Wenyang Sun, S. Ellison
Publikováno v:
SPIE Proceedings.
High brightness, laser-diode bars are required for efficient coupling into small-core optical-fibers. Record power and brightness results were achieved using 20% fill-factor, 980nm, 1cm-wide, 4mm cavity-length bars. Lifetimes of single bars, operated
Autor:
Jonah H. Jacob, M. Knapczyk, R. H. Chin, K. D. Lang, Aland K. Chin, Henry Eppich, Mehmet Dogan
Publikováno v:
SPIE Proceedings.
A record, 250W, CW output-power has been achieved for a single, 1cm-wide, 3.5mm cavity-length, 20% fill-factor, 976nm, laser-diode bar operated at 20°C. The remarkable laser-bar performance was in part the result of a novel EPIC (Enhanced Performanc
Autor:
Jonah H. Jacob, Rick K. Bertaska, Martin A. Jaspan, Maciej T. Knapczyk, Aland K. Chin, Israel Smilanski, Allen M. Flusberg, Steve D. Swartz
Publikováno v:
MRS Proceedings. 1195
A detailed description of the phenomenon of catastrophic optical-damage (COD) in short (380μm cavity-length), 12μm aperture, proton-bombarded, double-heterostructure laser-diodes with uncoated facets was first presented in 1974. In these devices, C
Autor:
Dean Chapman, William Thomlinson, Kevin Scalia, Jonah H. Jacob, Nicholas F. Gmur, Neil Malloy, Joseph A. Mangano
Publikováno v:
Synchrotron Radiation News. 7:34-36