Taito Alahautala - Academia.edu (original) (raw)
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Papers by Taito Alahautala
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Optical Engineering, 2007
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Measurement Science & Technology, 2004
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Optical Engineering, 2005
The properties of a paraboloid made of dielectric material and truncated from the focal plane are... more The properties of a paraboloid made of dielectric material and truncated from the focal plane are studied. In addition, the focusing of light emitted by astigmatic diode lasers with a truncated paraboloid is discussed. Finally, ray-tracing calculations are presented for a high-numerical-aperture truncated paraboloid used for focusing light emitted by a large number of diode lasers in an axially symmetric
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Applied Optics, 2004
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Applied Optics, 2004
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Optics Express, 2006
A method for axially symmetric fiber side pumping is proposed. The method is based on a coupling ... more A method for axially symmetric fiber side pumping is proposed. The method is based on a coupling structure and a pump source that both utilize the axially symmetric geometry of a typical optical fiber. The coupling structure can be manufactured by adding material to and/or by removing material from the fiber. In principle, the method enables the launch of kilowatt-level pump power into the fiber through a single coupling structure. The conditions for successful coupling and a simple experimental verification of the method are presented. In the experiments over 90 % of the launched light fell inside the coupling area and the potential for efficient coupling into a double clad fiber was demonstrated.
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Applied Optics, 2004
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Optical Engineering, 2007
Bookmarks Related papers MentionsView impact
Measurement Science & Technology, 2004
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Optical Engineering, 2005
The properties of a paraboloid made of dielectric material and truncated from the focal plane are... more The properties of a paraboloid made of dielectric material and truncated from the focal plane are studied. In addition, the focusing of light emitted by astigmatic diode lasers with a truncated paraboloid is discussed. Finally, ray-tracing calculations are presented for a high-numerical-aperture truncated paraboloid used for focusing light emitted by a large number of diode lasers in an axially symmetric
Bookmarks Related papers MentionsView impact
Applied Optics, 2004
Bookmarks Related papers MentionsView impact
Applied Optics, 2004
Bookmarks Related papers MentionsView impact
Optics Express, 2006
A method for axially symmetric fiber side pumping is proposed. The method is based on a coupling ... more A method for axially symmetric fiber side pumping is proposed. The method is based on a coupling structure and a pump source that both utilize the axially symmetric geometry of a typical optical fiber. The coupling structure can be manufactured by adding material to and/or by removing material from the fiber. In principle, the method enables the launch of kilowatt-level pump power into the fiber through a single coupling structure. The conditions for successful coupling and a simple experimental verification of the method are presented. In the experiments over 90 % of the launched light fell inside the coupling area and the potential for efficient coupling into a double clad fiber was demonstrated.
Bookmarks Related papers MentionsView impact
Applied Optics, 2004
Bookmarks Related papers MentionsView impact