Zobrazeno 1 - 10
of 41
pro vyhledávání: '"U. Ben-Ami"'
Publikováno v:
Optics letters. 44(1)
We inscribe with 266 nm femtosecond pulses a ∼0.75% output coupler for a 1550 nm fiber laser directly through the coating of an SMF-28. The output coupler was inscribed with the phase-mask technique without H2 loading. This output coupler was splic
Publikováno v:
Optics & Laser Technology. 126:106070
We measure the output power of an Er/Yb fiber laser with twelve different SMF-28 narrowband output couplers and demonstrate experimentally that the optimal reflectivity is ~1%. The fiber laser efficiency with the optimal output coupler is ~38% at ~15
Publikováno v:
Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF).
Autor:
Nikolay N. Ledentsov, N. Yu. Gordeev, L. Ya. Karachinsky, D. Bortman-Arbiv, U. Ben-Ami, K. Posilovic, T. Kettler, Y.M. Shernyakov, A. Sharon, Innokenty I. Novikov, Vitaly Shchukin, Dieter Bimberg, Mikhail V. Maximov
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 14:1113-1122
We report on edge-emitting lasers based on the 1- and 2-D longitudinal photonic bandgap crystal concept. The longitudinal photonic bandgap crystal (PBC) design allows a robust and controllable extension of the fundamental mode over a thick multilayer
Autor:
U Ben-Ami, Gadi Eisenstein, Sylvain Combrié, Quynh Vy Tran, A. De Rossi, I. Cestier, D Gready
Publikováno v:
Optics express. 17(17)
We report optical near field characterization of a GaAs photonic crystal waveguide which is side coupled to a nano cavity. We observe the effect of the metal coated probe on the resonance wavelength and the intensity distribution. The measurements fi
Autor:
Dieter Bimberg, Peter Werner, Mikhail V. Maximov, I. P. Soshnikov, Nikolai Zakharov, S. M. Kuznetsov, Vitaly Shchukin, I. I. Novikov, Yu. G. Musikhin, A. Sharon, N. V. Kryzhanovskaya, N. Yu. Gordeev, Yu. M. Shernyakov, N. N. Ledentsov, K. Posilovic, Vladimir Kalosha, T. Kettler, U. Ben-Ami, L. Ya. Karachinsky
Publikováno v:
SPIE Proceedings.
We report on lasers and light emitting diodes based on the longitudinal photonic bandgap crystal (PBC) concept. The PBC design allows achieving a robust and controllable extension of the fundamental mode over a thick multi-layer waveguide region to o
Publikováno v:
OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005..
A method to implement highly efficient and selective transformation between different fiber modes is presented. It is based on free space wavefront manipulation and enables the construction of high performance high-order mode dispersion compensating
Publikováno v:
Applied Physics Letters. 69:1840-1842
Vertical‐cavity surface emitting lasers (VCSELs) were grown by molecular beam epitaxy over openings in a SiN4 mask, deposited on a GaAs wafer. We obtained ready to use lasers and laser arrays, laterally defined by the polycrystalline, highly resist
Autor:
U. Ben-Ami, R. Nagar, N. Ben-Ami, J. Scheuer, M. Orenstein, G. Eisenstein, A. Lewis, E. Kapon, F. Reinhardt, P. Ils, A. Gustafsson
Publikováno v:
Conference Digest. ISLC 1998 NARA. 1998 IEEE 16th International Semiconductor Laser Conference (Cat. No. 98CH361130).
V-grooved quantum wire (QWR) lasers were studied by near-field optical microscopy with 0.1 /spl mu/m spatial resolution. We mapped the electroluminescence from the quantum structures and measured the lasing mode evolution. Localized photocurrent meas
Autor:
N. N. Ledentsov, U. Ben-Ami, V. A. Shchukin, I. I. Novikov, Mikhail V. Maximov, D. B. Arbiv, R. Duboc, A. Sharon, Yu. Yu. Kiselev, P. S. Kop’ev, Yu. M. Shernyakov, N. Yu. Gordeev
Publikováno v:
Applied Physics Letters. 92:103515
We report on 980nm InGaAs∕AlGaAs lasers with a broad waveguide based on a longitudinal photonic band crystal concept. The beam divergence measured as full width at half maximum was as narrow as 15W pulsed operation as limited by the current source.