Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Shyam K. Mandre"'
Autor:
Hugo Thienpont, Shyam K. Mandre, Ingo Fischer, Michael Peeters, Guy Verschaffelt, Gordon Craggs
Publikováno v:
Vrije Universiteit Brussel
We present direct measurements of the spatial coherence area of a pulsed broad-area vertical-cavity surface-emitting laser using a reversing wavefront interferometer. With this technique, we can assess the size and uniformity of the coherence area ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b038430231c77289d44f2d3222708912
https://doi.org/10.1109/jqe.2009.2013085
https://doi.org/10.1109/jqe.2009.2013085
Publikováno v:
tm - Technisches Messen. 74:353-364
Wir untersuchen die Möglichkeit des Einsatzes und der Anwendung Nichtlinearer Dynamik (NLD) zur gezielten Beeinflussung der Emissionseigenschaften von Halbleiterlasersystemen in Externer-Resonator-Konfiguration. Anhand zweier Beispiele zeigen wir, d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8becf2ac282860d57f639354ad9e1d0d
https://doi.org/10.1524/teme.2007.74.6.353
https://doi.org/10.1524/teme.2007.74.6.353
Publikováno v:
Optics Communications. 244:355-365
We present investigations of the influence of spatially filtered optical feedback on a broad-area semiconductor laser’s spatiotemporal emission dynamics. Our measurements reveal the ambiguous effect of optical feedback on the emission behavior of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::082df09cc64d2fde303fde0a06182b48
https://doi.org/10.1016/j.optcom.2004.09.058
https://doi.org/10.1016/j.optcom.2004.09.058
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
10 pages, 9 figures, 1 table.-- PACS number s : 42.55.Px, 42.60.Jf, 06.30.Ft
We investigate a polarization- and frequency-selective feedback scheme to control the emission properties of multimode vertical-cavity surface-emitting lasers. A joint
We investigate a polarization- and frequency-selective feedback scheme to control the emission properties of multimode vertical-cavity surface-emitting lasers. A joint
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5be39be491cfc81ea8f2b7337f8ba7ce
http://hdl.handle.net/10261/25511
http://hdl.handle.net/10261/25511
Publikováno v:
Vrije Universiteit Brussel
We present an experimental study of the physical process that leads to spatially incoherent, nonmodal emission in broad-area vertical-cavity surface-emitting lasers. We show that this special emission regime that occurs in pulsed operation of these l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f093e5c7233924b9a2b53510dc02ee8a
https://biblio.vub.ac.be/vubir/thermally-controlled-onset-of-spatially-incoherent-emission-in-a-broadarea-verticalcavity-surfaceemitting-laser(07681ddf-c10b-42b6-8735-63445c11cb56).html
https://biblio.vub.ac.be/vubir/thermally-controlled-onset-of-spatially-incoherent-emission-in-a-broadarea-verticalcavity-surfaceemitting-laser(07681ddf-c10b-42b6-8735-63445c11cb56).html
Autor:
Jan Danckaert, Gordon Craggs, Hugo Thienpont, Guy Verschaffelt, Ingo Fischer, Shyam K. Mandre
Publikováno v:
Scopus-Elsevier
We present an experimental study of the spatial coherence properties of Broad-Area Vertical-Cavity Surface-Emitting Lasers (BA-VCSELs). In particular we demonstrate that the spatially incoherent emission regime [1] that can be invoked in pulsed opera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2fb0dfa8e8675bf2387e6c7e83f9b71
https://biblio.vub.ac.be/vubir/role-of-thermal-effects-on-the-onset-of-spatially-incoherent-emission-in-a-broadarea-verticalcavity-surfaceemitting-laser(d679730b-4b0d-40dc-9f16-5198122d958b).html
https://biblio.vub.ac.be/vubir/role-of-thermal-effects-on-the-onset-of-spatially-incoherent-emission-in-a-broadarea-verticalcavity-surfaceemitting-laser(d679730b-4b0d-40dc-9f16-5198122d958b).html
Publikováno v:
Vrije Universiteit Brussel
We present experiments measuring the complex degree of coherence of a Broad-Area Vertical-Cavity Surface-Emitting Laser (BA-VCSEL) when it is driven into a regime of spatially incoherent emission. This high-power, spatially incoherent emission regime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c624f694e926fd66c045f9f60e3b920
https://hdl.handle.net/20.500.14017/40c808af-0d49-4610-94d6-23628dfe36d1
https://hdl.handle.net/20.500.14017/40c808af-0d49-4610-94d6-23628dfe36d1
Publikováno v:
2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference.
In this paper, we present a joint theoretical and experimental investigation on the effect of frequency-filtered and spatially shaped feedback on the emission of a multi-transverse mode VCSEL. We have built for this purpose a delay-differential model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5e3fea134fe0021a242081b9f12f90b
https://doi.org/10.1109/cleoe-iqec.2007.4386022
https://doi.org/10.1109/cleoe-iqec.2007.4386022
Autor:
Hugo Thienpont, Ingo Fischer, Michael Peeters, Shyam K. Mandre, Jan Danckaert, Wolfgang Elsäßer, Guy Verschaffelt
Publikováno v:
SPIE Proceedings.
An overview of the idiosyncratic emission characteristics of pulsed broad-area VCSELs is presented, together with a statistical model which describes these devices as quasi-homogeneous sources. The predicted properties of such sources, which include
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc5e02fa4ef83333026424e20b65f6a0
https://doi.org/10.1117/12.662012
https://doi.org/10.1117/12.662012
Autor:
Danilo Skoczowsky, Ralf Menzel, Axel Heuer, Volker Raab, Shyam K. Mandre, Wolfgang Elsässer, Ingo Fischer
Publikováno v:
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005..
Up to 250 mW of ps-pulses with a pulsewidth of 50 ps and a repetition rate of 1-3 GHz are generated by self-induced modelocking of a high-power diode-laser working in an external resonator.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d46a55c4cd46100749a17da463d5140
https://doi.org/10.1109/cleoe.2005.1567923
https://doi.org/10.1109/cleoe.2005.1567923