Design of an Integrated Gradient-Index Light Condenser for the Light Delivery in a Heat-Assisted Magnetic Recording Head

Design of an Integrated Gradient-Index Light Condenser for the Light Delivery in a Heat-Assisted Magnetic Recording Head
Title:
Design of an Integrated Gradient-Index Light Condenser for the Light Delivery in a Heat-Assisted Magnetic Recording Head
Other Titles:
Magnetics, IEEE Transactions on
Keywords:
Publication Date:
30 October 2013
Citation:
Kun Tang; Qian Wang; Singh, G.; Seng-Tiong Ho, "Design of an Integrated Gradient-Index Light Condenser for the Light Delivery in a Heat-Assisted Magnetic Recording Head," in Magnetics, IEEE Transactions on , vol.50, no.4, pp.1-6, April 2014 doi: 10.1109/TMAG.2013.2287854
Abstract:
In this article, the authors have designed a light condenser device based on the integrated gradient-index (GRIN) lens for the light delivery in a heat-assisted magnetic recording head. The function of the GRIN light condenser is to solve the mode size mismatch and to realize a smooth and efficient light condensation between an external laser diode and a nano-waveguide. Two realizable approaches based on the alloying and two-material film stack to actualize the equivalent index profile have been discussed. From numerical examples, optimized coupling efficiencies of 93.2 % and 86.0 % can be achieved for the case of transverse electric and transverse magnetic polarized light, respectively.
License type:
PublisherCopyrights
Funding Info:
Description:
(c) 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
ISSN:
0018-9464
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