Journal
OPTICS EXPRESS
Volume 15, Issue 22, Pages 14299-14305Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.15.014299
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- Engineering and Physical Sciences Research Council [EP/D064767/1] Funding Source: researchfish
- EPSRC [EP/D064767/1] Funding Source: UKRI
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We model the optical properties of L3 photonic crystal nano-cavities as a function of the photonic crystal membrane refractive index n using a guided mode expansion method. Band structure calculations revealed that a TE-like full band-gap exists for materials of refractive index as low as 1.6. The Q-factor of such cavities showed a super-linear increase with refractive index. By adjusting the relative position of the cavity side holes, the Q-factor was optimised as a function of the photonic crystal membrane refractive index n over the range 1.6 to 3.4. Q-factors in the range 3000- 8000 were predicted from absorption free materials in the visible range with refractive index between 2.45 and 2.8. (C) 2007 Optical Society of America.
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