The Effect of Chaotic Laser beam on near field transducers for Heat assisted magnetic recording

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P. Wanchai K. Sarut

Abstract

The purpose of this paper is to demonstrate the effects of chaos generated in semiconductor laser with external cavity feedback. Chaotic states of a semiconductor laser with external cavity feedback mirror are generated by varying external feedback strength between 0-3ns-1, which is a function of reflectivity of mirror. To study chaos, Bifurcation, Temporal waveform, and Attractor are used. The results of chaotic states affect near-field. We showed comparisons with stable, periodic, and chaotic states that change the electrical field around 50x50 nm of C-shaped near-field transducer (NFT) by using a semiconductor laser, 830 nm at 50 nanosecond. The effects of chaotic state decrease the electrical field around a near-field transducer. It is very important in the light delivery system designs, which are the components of a heat assisted magnetic recording system


Keywords: Chaotic laser beam, Heat assisted magnetic recording, Near-field transducers

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How to Cite
Wanchai, P., & Sarut, K. (1). The Effect of Chaotic Laser beam on near field transducers for Heat assisted magnetic recording. Science & Technology Asia, 18(3), 44-53. Retrieved from https://www.tci-thaijo.org/index.php/SciTechAsia/article/view/41141
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