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Y. D. Yang, Y. Z. Huang, Q. Chen, "Comparison of $Q$-Factors between ${\hbox {TE}}$ and ${\hbox {TM}}$ modes
in 3-D microsquares by FDTD simulation," IEEE
Photon. Technol. Lett. 19, 1831-1833 (2007).

Q. Chen, Y. H. Hu, Y. Z. Huang, Y. Du, Z. C. Fan, "Equilateral-triangle-resonator
injection lasers with directional emission," IEEE
J. Quantum Electron. 43, 440-444 (2007).

Y. D. Yang, Y. Z. Huang, "Symmetry analysis and numerical simulation of mode characteristics
for equilateral-polygonal optical microresonators," Phys.
Rev. A 76, 023822 (2007).

Y. Z. Huang, Q. Chen, W. H. Guo, Q. Y. Lu, L. J. Yu, "Mode
characteristics for equilateral triangle optical resonators," IEEE J. Sel. Quantum Electron. 12, 59-65 (2006).

W. H. Guo, Y. Z. Huang, Q. Y. Lu, L. J. Yu, "Modes in square resonators," IEEE
J. Quantum Electron. 39, 1563-1566 (2003).

G. D. Chern, H. E. Tureci, A. D. Stone, R. K. Chang, M. Kneissl, N. M. Johnson, "Unidirectional lasing from InGaN multiple-quantum-well spiral-shaped
micropillars," Appl. Phys. Lett. 83, 1710-1712 (2003).

K. Djordjev, S.- J. Choi, S.- J. Choi, P. D. Dapkus, "High-${\hbox
{Q}}$ vertically coupled InP microdisk resonators," IEEE Photon. Technol. Lett. 14, 331-333 (2002).

M. Hentschel, K. Richter, "Quantum chaos in optical systems: The annular billiard," Phys. Rev. E 66, 056207 (2002).

W. H. Guo, W. J. Li, Y. Z. Huang, "Computation of resonant frequencies and quality factors
of cavities by FDTD technique and Padé approximation," IEEE Microw. Wireless Compon. Lett. 11, 223-225 (2001).

M. Arzberger, G. Böhm, M.-C. Amann, G. Abstreiter, "Continuous room-temperature operation of electrically pumped
quantum dot microcylinder lasers," Appl. Phys.
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M. Fujita, R. Ushigome, T. Baba, "Large spontaneous emission factor of 0.1 in a microdisk
injection laser," IEEE Photon. Technol. Lett. 13, 403-405 (2001).

S. M. K. Thiyagarajan, D. A. Cohen, A. F. J. Levi, S. Ryu, R. Li, P. D. Dapkus, "Continuous
room-temperature operation of microdisk laser diodes," Electron.
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B. J. Li, P. L. Liu, "Numerical analysis of the whispering gallery modes by the
finite-difference time-domain method," IEEE
J. Quantum Electron. 32, 1583-1587 (1996).

J. P. Berenger, "A perfectly matched layer for the absorption of electromagnetic
waves," J. Comput. Phys. 114, 185-200 (1994).

D. Y. Chu, M. K. Chin, W. G. Bi, H. Q. Hou, C. W. Tu, S. T. Ho, "Double-disk structure for output
coupling in microdisk lasers," Appl. Phys. Lett. 65, 3167-3169 (1994).

A. F. J. Levi, S. L. McCall, S. J. Pearton, R. A. Logan, "Room temperature operation of submicrometer radius disk
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S. L. McCall, A. F. J. Levi, R. E. Slusher, S. J. Pearton, R. A. Logan, "Whispering-gallery mode microdisk lasers," Appl. Phys. Lett. 60, 289-291 (1992).

M. Arzberger, G. Böhm, M.-C. Amann, G. Abstreiter, "Continuous room-temperature operation of electrically pumped
quantum dot microcylinder lasers," Appl. Phys.
Lett. 79, 1766-1768 (2001).

G. D. Chern, H. E. Tureci, A. D. Stone, R. K. Chang, M. Kneissl, N. M. Johnson, "Unidirectional lasing from InGaN multiple-quantum-well spiral-shaped
micropillars," Appl. Phys. Lett. 83, 1710-1712 (2003).

S. L. McCall, A. F. J. Levi, R. E. Slusher, S. J. Pearton, R. A. Logan, "Whispering-gallery mode microdisk lasers," Appl. Phys. Lett. 60, 289-291 (1992).

D. Y. Chu, M. K. Chin, W. G. Bi, H. Q. Hou, C. W. Tu, S. T. Ho, "Double-disk structure for output
coupling in microdisk lasers," Appl. Phys. Lett. 65, 3167-3169 (1994).

S. M. K. Thiyagarajan, D. A. Cohen, A. F. J. Levi, S. Ryu, R. Li, P. D. Dapkus, "Continuous
room-temperature operation of microdisk laser diodes," Electron.
Lett. 35, 1252-1253 (1999).

A. F. J. Levi, S. L. McCall, S. J. Pearton, R. A. Logan, "Room temperature operation of submicrometer radius disk
laser," Electron. Lett. 29, 1666-1667 (1993).

B. J. Li, P. L. Liu, "Numerical analysis of the whispering gallery modes by the
finite-difference time-domain method," IEEE
J. Quantum Electron. 32, 1583-1587 (1996).

Q. Chen, Y. H. Hu, Y. Z. Huang, Y. Du, Z. C. Fan, "Equilateral-triangle-resonator
injection lasers with directional emission," IEEE
J. Quantum Electron. 43, 440-444 (2007).

W. H. Guo, Y. Z. Huang, Q. Y. Lu, L. J. Yu, "Modes in square resonators," IEEE
J. Quantum Electron. 39, 1563-1566 (2003).

Y. D. Yang, Y. Z. Huang, Q. Chen, "Comparison of $Q$-Factors between ${\hbox {TE}}$ and ${\hbox {TM}}$ modes
in 3-D microsquares by FDTD simulation," IEEE
Photon. Technol. Lett. 19, 1831-1833 (2007).

Y. Z. Huang, Q. Chen, W. H. Guo, Q. Y. Lu, L. J. Yu, "Mode
characteristics for equilateral triangle optical resonators," IEEE J. Sel. Quantum Electron. 12, 59-65 (2006).

W. H. Guo, W. J. Li, Y. Z. Huang, "Computation of resonant frequencies and quality factors
of cavities by FDTD technique and Padé approximation," IEEE Microw. Wireless Compon. Lett. 11, 223-225 (2001).

M. Fujita, R. Ushigome, T. Baba, "Large spontaneous emission factor of 0.1 in a microdisk
injection laser," IEEE Photon. Technol. Lett. 13, 403-405 (2001).

K. Djordjev, S.- J. Choi, S.- J. Choi, P. D. Dapkus, "High-${\hbox
{Q}}$ vertically coupled InP microdisk resonators," IEEE Photon. Technol. Lett. 14, 331-333 (2002).

J. P. Berenger, "A perfectly matched layer for the absorption of electromagnetic
waves," J. Comput. Phys. 114, 185-200 (1994).

Y. D. Yang, Y. Z. Huang, "Symmetry analysis and numerical simulation of mode characteristics
for equilateral-polygonal optical microresonators," Phys.
Rev. A 76, 023822 (2007).

Y. D. Yang, Y. Z. Huang, Q. Chen, "High-$Q~{\hbox {TM}}$ whispering-gallery modes in three-dimensional microcylinders," Phys. Rev. A 75, 013817 (2007).

M. Hentschel, K. Richter, "Quantum chaos in optical systems: The annular billiard," Phys. Rev. E 66, 056207 (2002).

A. Taflove, S. C. Hagness, Computational Electrodynamics: The Finite-Difference Time-Domain
Method (Artech House, 2005).

Y. D. Yang, Y. Z. Huang, "High $Q$-factor ${\hbox {TM}}$ modes in three-dimensional
semiconductor microresonators," Proc. CLEO/Pacific
Rim (2007).