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Proceedings Paper

Periodically poled silicon
Author(s): Nick K. Hon; Kevin K. Tsia; Daniel R. Solli; Jacob B. Khurgin; Bahram Jalali
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Paper Abstract

Bulk centrosymmetric silicon lacks second-order optical nonlinearity χ(2) - a foundational component of nonlinear optics. Here, we propose a new class of photonic device which enables χ(2) as well as quasi-phase matching based on periodic stress fields in silicon - periodically-poled silicon (PePSi). This concept adds the periodic poling capability to silicon photonics, and allows the excellent crystal quality and advanced manufacturing capabilities of silicon to be harnessed for devices based on χ(2)) effects. The concept can also be simply achieved by having periodic arrangement of stressed thin films along a silicon waveguide. As an example of the utility, we present simulations showing that mid-wave infrared radiation can be efficiently generated through difference frequency generation from near-infrared with a conversion efficiency of 50% based on χ(2) values measurements for strained silicon reported in the literature [Jacobson et al. Nature 441, 199 (2006)]. The use of PePSi for frequency conversion can also be extended to terahertz generation. With integrated piezoelectric material, dynamically control of χ(2)nonlinearity in PePSi waveguide may also be achieved. The successful realization of PePSi based devices depends on the strength of the stress induced χ(2) in silicon. Presently, there exists a significant discrepancy in the literature between the theoretical and experimentally measured values. We present a simple theoretical model that produces result consistent with prior theoretical works and use this model to identify possible reasons for this discrepancy.

Paper Details

Date Published: 18 February 2010
PDF: 6 pages
Proc. SPIE 7582, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IX, 758211 (18 February 2010); doi: 10.1117/12.842676
Show Author Affiliations
Nick K. Hon, Univ. of California, Los Angeles (United States)
Kevin K. Tsia, Univ. of California, Los Angeles (United States)
Daniel R. Solli, Univ. of California, Los Angeles (United States)
Jacob B. Khurgin, Johns Hopkins Univ. (United States)
Bahram Jalali, Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 7582:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IX
Peter E. Powers, Editor(s)

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