Optical resonance tuning and polarization of thin-walled tubular microcavities.

We present experimental and finite-difference time-domain simulation results on the tunability of optical resonant modes of spiral microtube cavities, rolled-up from square patterned SiO/SiO(2) thin nanomembranes on glass substrates. The peak positions of resonant TM modes shift to lower energies by coating the microtube wall with Al(2)O(3) monolayers, which is well described by simulations. Moreover, a second group of tunable resonant modes appears beyond a certain critical thickness of the coated Al(2)O(3). The polarization of this group of modes is TE, as we find out by a detailed analysis of the polarization-dependent photoluminescence spectra.

[1]  Kerry J. Vahala,et al.  Fabrication and coupling to planar high-Q silica disk microcavities , 2003 .

[2]  S. Arnold,et al.  Whispering-gallery-mode biosensing: label-free detection down to single molecules , 2008, Nature Methods.

[3]  D. Heitmann,et al.  Optical modes in semiconductor microtube ring resonators. , 2006, Physical review letters.

[4]  O. Arcizet,et al.  Ultralow dissipation optomechanical resonators on a chip , 2008, CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference.

[5]  K. Vahala,et al.  Ultralow-threshold Raman laser using a spherical dielectric microcavity , 2002, Nature.

[6]  O. Arcizet,et al.  High-sensitivity monitoring of micromechanical vibration using optical whispering gallery mode resonators , 2008, 0805.1608.

[7]  Xiaodong Yang,et al.  Digital resonance tuning of high-Q/Vm silicon photonic crystal nanocavities by atomic layer deposition , 2007, 2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science.

[8]  Rajan P Kulkarni,et al.  Label-Free, Single-Molecule Detection with Optical Microcavities , 2007, Science.

[9]  Oskar Painter,et al.  Linear and nonlinear optical spectroscopy of a strongly coupled microdisk–quantum dot system , 2007, Nature.

[10]  SiOx∕Si radial superlattices and microtube optical ring resonators , 2006, cond-mat/0611261.

[11]  O. Schmidt,et al.  Optical properties of rolled-up tubular microcavities from shaped nanomembranes , 2009 .

[12]  Degeneracy breaking of optical resonance modes in rolled-up spiral microtubes , 2007 .

[13]  Christelle Monat,et al.  Integrated optofluidics: A new river of light , 2007 .

[14]  T. J. Kippenberg,et al.  Ultra-high-Q toroid microcavity on a chip , 2003, Nature.

[15]  Oliver G. Schmidt,et al.  On-chip Si/SiOx microtube refractometer , 2008 .

[16]  H J Moon,et al.  Cylindrical microcavity laser based on the evanescent-wave-coupled gain. , 2000, Physical review letters.

[17]  Oliver G Schmidt,et al.  Rolled-up transparent microtubes as two-dimensionally confined culture scaffolds of individual yeast cells. , 2009, Lab on a chip.

[18]  Oliver G. Schmidt,et al.  Versatile Approach for Integrative and Functionalized Tubes by Strain Engineering of Nanomembranes on Polymers , 2008 .