Abstract

Single-mode lasing from a coupled asymmetric microcavity is achieved. By coupling two size mismatched circular microrings to form a coupled asymmetric microcavity, multi-whispering-gallery modes are successfully suppressed and single-frequency laser emission is robustly obtained. Moreover, the laser emits in four directions, and each beam has a divergence of only 6.6°. It is demonstrated further that this single-frequency coupled microcavity laser can be easily integrated with planar lightwave circuits. We provide an easily accessible approach to achieve a single-frequency laser from microcavity lasers operating on whispering-gallery modes.

© 2008 Optical Society of America

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References

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2008 (1)

L. Shang, L. Liu, and L. Xu, Appl. Phys. Lett. 92, 071111 (2008).
[CrossRef]

2006 (1)

J.-W. Ryu, S.-Y. Lee, C.-M. Kim, and Y.-J. Park, Phys. Rev. A 74, 013804 (2006).
[CrossRef]

2004 (1)

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

2003 (2)

2000 (1)

1991 (1)

K. Oda, N. Takato, and H. Toba, J. Lightwave Technol. 9, 728 (1991).
[CrossRef]

1987 (1)

1974 (1)

Baer, T.

Bennett, J.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Cai, M.

Chapman, W. B.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Daiber, A.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Epitaux, M.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Finot, M.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Garmire, E.

Hunsperger, R. G.

Kim, C.-M.

J.-W. Ryu, S.-Y. Lee, C.-M. Kim, and Y.-J. Park, Phys. Rev. A 74, 013804 (2006).
[CrossRef]

Kozlovsky, W. J.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Lee, S.-Y.

J.-W. Ryu, S.-Y. Lee, C.-M. Kim, and Y.-J. Park, Phys. Rev. A 74, 013804 (2006).
[CrossRef]

Li, D.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Ling, T.

Liu, L.

McDonald, M.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Oda, K.

K. Oda, N. Takato, and H. Toba, J. Lightwave Technol. 9, 728 (1991).
[CrossRef]

Painter, O.

Park, Y.-J.

J.-W. Ryu, S.-Y. Lee, C.-M. Kim, and Y.-J. Park, Phys. Rev. A 74, 013804 (2006).
[CrossRef]

Ryu, J.-W.

J.-W. Ryu, S.-Y. Lee, C.-M. Kim, and Y.-J. Park, Phys. Rev. A 74, 013804 (2006).
[CrossRef]

Sercel, P. C.

Shang, L.

L. Shang, L. Liu, and L. Xu, Appl. Phys. Lett. 92, 071111 (2008).
[CrossRef]

Somekh, S.

Song, Q.

Takato, N.

K. Oda, N. Takato, and H. Toba, J. Lightwave Technol. 9, 728 (1991).
[CrossRef]

Toba, H.

K. Oda, N. Takato, and H. Toba, J. Lightwave Technol. 9, 728 (1991).
[CrossRef]

Vahala, K. J.

Verdiell, J. M.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Wang, W.

Xu, L.

Yariv, A.

Zbinden, E.

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

Appl. Opt. (1)

Appl. Phys. Lett. (1)

L. Shang, L. Liu, and L. Xu, Appl. Phys. Lett. 92, 071111 (2008).
[CrossRef]

Intel Technol. J. (1)

M. Finot, M. McDonald, A. Daiber, W. B. Chapman, D. Li, M. Epitaux, E. Zbinden, J. Bennett, W. J. Kozlovsky, and J. M. Verdiell, Intel Technol. J. 8, 101 (2004).

J. Lightwave Technol. (1)

K. Oda, N. Takato, and H. Toba, J. Lightwave Technol. 9, 728 (1991).
[CrossRef]

Nature (1)

K. J. Vahala, Nature 424, 839 (2003).
[CrossRef] [PubMed]

Opt. Lett. (3)

Phys. Rev. A (1)

J.-W. Ryu, S.-Y. Lee, C.-M. Kim, and Y.-J. Park, Phys. Rev. A 74, 013804 (2006).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Laser emission spectra from a (a) single circular ring and a (b) 115 125 μ m coupled cavity. Cavities are pumped at energy density of 3.6 mJ cm 2 .

Fig. 2
Fig. 2

a, Single-mode lasing from a 115 125 μ m coupled cavity; the pump energy density is 0.16 mJ cm 2 . b, Far-field emission distribution of the single-mode laser.

Fig. 3
Fig. 3

Plots of single-mode threshold ( I TH , open circles) and I STH I TH (solid squares) versus passive ring diameter D 1 .

Fig. 4
Fig. 4

Single-mode emission of a (a) 115 125 μ m when it couples with a passive planar waveguide and the pump light is focused to the coupled cavity and (b) when it couples with an active planar waveguide; a line pump after a cylindrical lens is used to cover both the coupled cavity and waveguide. Insets of a show a schematic of the cavity configuration.

Equations (1)

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Δ λ λ 2 π n ( D 1 D 2 ) ,

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