Zobrazeno 1 - 10
of 75
pro vyhledávání: '"M. Achtenhagen"'
Publikováno v:
Journal of Lightwave Technology. 27:3433-3437
In this paper, spectral data of distributed Bragg reflector lasers emitting around 974 nm and 1084 nm are presented. The devices are fabricated by a single-growth molecular beam epitaxy step, and the gratings are defined by holographic interferometry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98bb87b82f3067b76fc4ea6a94ac3e8e
https://doi.org/10.1109/jlt.2008.2005848
https://doi.org/10.1109/jlt.2008.2005848
Publikováno v:
Journal of Lightwave Technology. 24:2225-2232
Coherent coupling of lateral modes is suggested to explain the phenomena associated with beam-steering kinks, which appear in the L-I curves of many ridge waveguide lasers. The analysis that is presented explains quantitatively the previously reporte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e80bfb7cd0850be612acf3e4d9c4a8c
https://doi.org/10.1109/jlt.2006.872313
https://doi.org/10.1109/jlt.2006.872313
Publikováno v:
Journal of Lightwave Technology. 22:1962-1967
An angular spectrum of plane-wave representation is employed to calculate the discrimination between the fundamental and higher order transverse modes in step-index-guided vertical-cavity surface-emitting lasers. The effect of material composition an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d6699efc094e3aede884ec8ea04653b
https://doi.org/10.1109/jlt.2004.832442
https://doi.org/10.1109/jlt.2004.832442
Publikováno v:
Journal of Lightwave Technology. 19:1521-1526
The fiber gain and noise figure in erbium (Er)-ytterbium (Yb) codoped fiber amplifiers are experimentally studied and theoretically modeled. The different fiber parameters for the model are found in separate characterization measurements. The compari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4eee630f2919e7ac7bd10ff978bd34cc
https://doi.org/10.1109/50.956139
https://doi.org/10.1109/50.956139
Autor:
M. Achtenhagen
Publikováno v:
Optics Communications. 266:172-174
The letter presents numerical data and gives an explanation for the spontaneous creation of spatial patterns in narrow-ridge waveguide laser diodes by including the effect of diffraction and non-linear coupling between transverse modes and the active
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c735aa3ced31a07af557a30a1c7c9e84
https://doi.org/10.1016/j.optcom.2006.04.056
https://doi.org/10.1016/j.optcom.2006.04.056
Publikováno v:
IEEE Photonics Technology Letters. 18:526-528
Lateral mode discrimination and output stability is experimentally investigated in ridge waveguide laser diodes, having various residual guide thicknesses outside the ridge region. It is found that a critical residual thickness exists below which the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb6d09414c370b6f2703eea1755c1123
https://doi.org/10.1109/lpt.2005.863992
https://doi.org/10.1109/lpt.2005.863992
Autor:
J. Boucart, A. Mircea, C.-A. Berseth, Alexandru Mereuta, Andrei Caliman, Alok Rudra, M. Achtenhagen, Elyahou Kapon, A. Syrbu, V. Iakovlev, S. Tadeoni, Grigore Suruceanu
Publikováno v:
IEEE Photonics Technology Letters. 16:1991-1993
We demonstrate widely tunable InAlGaAs-InP-AlGaAs-GaAs optically pumped vertical-cavity surface-emitting lasers operating in the 1.55-/spl mu/m waveband. The tuning range of 32 nm is achieved by applying a low tuning voltage of 4 V. Maximum single-mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4e164fa52f91317fcc93d153894f4e2
https://doi.org/10.1109/lpt.2004.832592
https://doi.org/10.1109/lpt.2004.832592
Autor:
Alok Rudra, Andrei Caliman, Grigore Suruceanu, Alexandru Mereuta, Eli Kapon, C.-A. Berseth, V. Iakovlev, A. Mircea, M. Achtenhagen, A. Syrbu
Publikováno v:
IEEE Photonics Technology Letters. 16:1230-1232
We demonstrate 1.5-/spl mu/m waveband wafer-fused InGaAlAs-InP-AlGaAs-GaAs vertical-cavity surface-emitting lasers (VCSELs) emitting high single-mode power of 1.5 mW at room temperature with sidemode suppression ratio of over 30 dB and a full-width a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e9ba3fe9383aa1daf775676c5ea2dd8
https://doi.org/10.1109/lpt.2004.826099
https://doi.org/10.1109/lpt.2004.826099
Autor:
M. Achtenhagen, I. Mandelbaum
Publikováno v:
IEEE Photonics Technology Letters. 14:349-351
A novel technique of measuring group velocity dispersion (GVD) in optical fibers is introduced. The technique utilizes stimulated Raman scattering to couple small modulations from a pump beam to a signal beam. By measuring the coupling efficiency, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fa527fe518519d74608524da8f8aa2d
https://doi.org/10.1109/68.986809
https://doi.org/10.1109/68.986809
Publikováno v:
Applied Physics Letters. 78:1322-1324
Raman amplification is investigated both experimentally and numerically. It is demonstrated that, depending on the different pump wavelength combinations, the shape as well as the amount of the fiber gain can be altered accordingly. A numerical model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d596e6ddb55aa42c0bca406c4be9050
https://doi.org/10.1063/1.1352665
https://doi.org/10.1063/1.1352665