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US 8,526,103 B2Granted
Laser system with highly linear output
AssigneeOclaro Technology Limited
InventorsStefan Mohrdiek, Evgeny Zibik, Hans Ulrich Pfeiffer, Boris Sverdlov
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Abstract
A laser device having a semiconductor gain element optically coupled to an optical fiber by using an angled anamorphic fiber lens and including a wavelength-selective front reflector. The laser device possesses improved output characteristics such as a highly linear laser emission output, even when the amplification section produces a high amount of gain. Such a laser source can also be used in various applications such as pump lasers for fiber amplifiers or frequency doubling systems.
Claims19
A laser device including:
- a semiconductor waveguide containing a gain element and limited by rear and front facets of the semiconductor waveguide, a face of the front facet of the semiconductor waveguide arranged non-orthogonal to a propagation direction of a laser mode;
- an optical fiber waveguide with a fiber lens coupling radiation between the optical fiber and the front facet of the semiconductor waveguide, a substantially planar face of the fiber lens arranged non-orthogonal to the propagation direction and aligned with the face of the front facet;
- a wavelength-selective reflector arranged within the optical fiber to form a laser cavity between the rear facet and the wavelength-selective reflector.
Dependencies are inferred from the claim text.