Experimental analysis of spatial states in broad area vertical cavity surface-emitting lasers [Elektronische Ressource] / vorgelegt von Malte Arved Schulz-Ruhtenberg

184

pages

English

Documents

2008

Lire

Le téléchargement nécessite un accès à la bibliothèque YouScribe Tout savoir sur nos offres

184

pages

English

Ebook

2008

Lire

Le téléchargement nécessite un accès à la bibliothèque YouScribe Tout savoir sur nos offres

Publié par

westfalische_wilhelms-universitat_munster

Publié le

01 janvier 2008

Nombre de lectures

Langue

English

Poids de l'ouvrage

10 Mo

Experimental analysis of spatial statesin broad-area vertical-cavitysurface-emitting lasersMalte Arved Schulz-Ruhtenberg2008Experimentelle PhysikExperimental analysis of spatial states in broad-areavertical-cavity surface-emitting lasersInaugural-Dissertationzur Erlangung des Doktorgradesder Naturwissenschaften im Fachbereich Physikder Mathematisch-Naturwissenschaftlichen Fakult¨atder Westf¨alischen Wilhelms-Universit¨at Mu¨nstervorgelegt vonMalte Arved Schulz-Ruhtenbergaus Berlin– 2008 –Dekan: Prof. Dr. J. P. WesselsErster Gutachter: Dr. T. AckemannZweiter Gutachter: Prof. Dr. W. LangeTag der mundlic¨ hen Prufung:¨ 30.06.2008Tag der Promotion:AbstractIn this thesis, the properties of the transverse patterns emitted by oxide-conﬁnedvertical-cavity surface-emitting lasers (VCSELs) with a large aperture are studied ex-perimentally. These include lasers with square (30 and 40μm side length) and circularaperture (80μm diameter). The lasers tend to emit highly divergent modes due to theirlarge Fresnel number, which reduces the beam quality drastically. It is thus of some in-terest for applications to understand the processes that lead to the formation of thesetransverse modes. The lasers also oﬀer the opportunity to study spontaneous patternformation in a system which is easy to operate and available in many diﬀerent designs.

Voir