Abstract

We applied laser-diode sheetlike end pumping to a multimode Nd:YVO4 laser and observed high-speed (>400-MHz) modulation of the intensity of chaotic pulsation near 1 MHz. The frequencies of modulation were the beat frequencies for pairs of closely spaced lasing modes. Asymmetric optical confinement and the resultant modal interference are shown to lead to oval-hollow-mode operation in which modal beat notes induce high-speed modulation, the frequency range of which is 2 orders of magnitude higher than the intrinsic relaxation oscillation frequency. Good numerical reproduction of the observed chaotic pulsations and their high-speed modulation was obtained with model equations in which such effects as nonlinear gain coupling among modes and field interference between pairs of modes were included. High-speed pulsations in nonchaotic lasers were also demonstrated.

© 2002 Optical Society of America

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  1. K. Otsuka, Nonlinear Dynamics in Optical Complex Systems (Kluwer Academic, Dordrecht, The Netherlands, 1999).
  2. K. Otsuka, Y. Asakawa, R. Kawai, S.-L. Hwong, and J.-L. Chern, Jpn. J. Appl. Phys. 37, L1523 (1998).
  3. K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).
  4. K. Otsuka, S.-L. Hwong, and B. A. Nguyen, Phys. Rev. A 61, 053815 (2000).
  5. K. Otsuka, J.-Y. Ko, and T. Fukazawa, Jpn. J. Appl. Phys. 45, L252 (2002).
  6. W. Nakwaski and M. Osinski, in Progress in Optics, E. Wolf, ed. (Elsevier/North-Holland, Amsterdam, 1998), Vol. XXXVIIII, pp. 165–262.
  7. J. Mulet and S. Balle, IEEE J. Quantum Electron. 38, 291 (2002).

2002

K. Otsuka, J.-Y. Ko, and T. Fukazawa, Jpn. J. Appl. Phys. 45, L252 (2002).

J. Mulet and S. Balle, IEEE J. Quantum Electron. 38, 291 (2002).

2000

K. Otsuka, S.-L. Hwong, and B. A. Nguyen, Phys. Rev. A 61, 053815 (2000).

1999

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

1998

K. Otsuka, Y. Asakawa, R. Kawai, S.-L. Hwong, and J.-L. Chern, Jpn. J. Appl. Phys. 37, L1523 (1998).

Asakawa, Y.

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

K. Otsuka, Y. Asakawa, R. Kawai, S.-L. Hwong, and J.-L. Chern, Jpn. J. Appl. Phys. 37, L1523 (1998).

Balle, S.

J. Mulet and S. Balle, IEEE J. Quantum Electron. 38, 291 (2002).

Chern, J.-L.

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

K. Otsuka, Y. Asakawa, R. Kawai, S.-L. Hwong, and J.-L. Chern, Jpn. J. Appl. Phys. 37, L1523 (1998).

Fukazawa, T.

K. Otsuka, J.-Y. Ko, and T. Fukazawa, Jpn. J. Appl. Phys. 45, L252 (2002).

Hwong, S.-L.

K. Otsuka, S.-L. Hwong, and B. A. Nguyen, Phys. Rev. A 61, 053815 (2000).

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

K. Otsuka, Y. Asakawa, R. Kawai, S.-L. Hwong, and J.-L. Chern, Jpn. J. Appl. Phys. 37, L1523 (1998).

Kawai, R.

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

K. Otsuka, Y. Asakawa, R. Kawai, S.-L. Hwong, and J.-L. Chern, Jpn. J. Appl. Phys. 37, L1523 (1998).

Ko, J.-Y.

K. Otsuka, J.-Y. Ko, and T. Fukazawa, Jpn. J. Appl. Phys. 45, L252 (2002).

Ko, Y.-Y.

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

Mulet, J.

J. Mulet and S. Balle, IEEE J. Quantum Electron. 38, 291 (2002).

Nakwaski, W.

W. Nakwaski and M. Osinski, in Progress in Optics, E. Wolf, ed. (Elsevier/North-Holland, Amsterdam, 1998), Vol. XXXVIIII, pp. 165–262.

Nguyen, B. A.

K. Otsuka, S.-L. Hwong, and B. A. Nguyen, Phys. Rev. A 61, 053815 (2000).

Ohki, K.

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

Osinski, M.

W. Nakwaski and M. Osinski, in Progress in Optics, E. Wolf, ed. (Elsevier/North-Holland, Amsterdam, 1998), Vol. XXXVIIII, pp. 165–262.

Otsuka, K.

K. Otsuka, J.-Y. Ko, and T. Fukazawa, Jpn. J. Appl. Phys. 45, L252 (2002).

K. Otsuka, S.-L. Hwong, and B. A. Nguyen, Phys. Rev. A 61, 053815 (2000).

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

K. Otsuka, Y. Asakawa, R. Kawai, S.-L. Hwong, and J.-L. Chern, Jpn. J. Appl. Phys. 37, L1523 (1998).

K. Otsuka, Nonlinear Dynamics in Optical Complex Systems (Kluwer Academic, Dordrecht, The Netherlands, 1999).

Utsu, H.

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

IEEE J. Quantum Electron.

J. Mulet and S. Balle, IEEE J. Quantum Electron. 38, 291 (2002).

Jpn. J. Appl. Phys.

K. Otsuka, J.-Y. Ko, and T. Fukazawa, Jpn. J. Appl. Phys. 45, L252 (2002).

Jpn. J. Appl. Phys.

K. Otsuka, Y. Asakawa, R. Kawai, S.-L. Hwong, and J.-L. Chern, Jpn. J. Appl. Phys. 37, L1523 (1998).

K. Otsuka, H. Utsu, R. Kawai, K. Ohki, Y. Asakawa, S.-L. Hwong, Y.-Y. Ko, and J.-L. Chern, Jpn. J. Appl. Phys. 38, L1025 (1999).

Phys. Rev. A

K. Otsuka, S.-L. Hwong, and B. A. Nguyen, Phys. Rev. A 61, 053815 (2000).

Other

W. Nakwaski and M. Osinski, in Progress in Optics, E. Wolf, ed. (Elsevier/North-Holland, Amsterdam, 1998), Vol. XXXVIIII, pp. 165–262.

K. Otsuka, Nonlinear Dynamics in Optical Complex Systems (Kluwer Academic, Dordrecht, The Netherlands, 1999).

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