Letter

[OPTICAL REVIEW Vol. 21, No. 2 (2014) 113-116]
© 2014 The Japan Society of Applied Physics

Anticorrelated Bidirectional Output of Quasistadium-Shaped Semiconductor Microlasers

Susumu SHINOHARA1, Takehiro FUKUSHIMA2, Satoshi SUNADA3, Takahisa HARAYAMA1,4, Kenichi ARAI1, and Kazuyuki YOSHIMURA1

1NTT Communication Science Laboratories, NTT Corporation, Seika, Kyoto 619-0237, Japan
2Department of Information and Communication Engineering, Okayama Prefectural University, Soja, Okayama 719-1197, Japan
3Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan
4Department of Mechanical Engineering, Toyo University, Kawagoe, Saitama 350-8585, Japan

(Received October 28, 2013; Accepted December 31, 2013)

Time-domain properties of the output from quasistadium-shaped microcavity semiconductor lasers are studied. Ring modes generating a bidirectional output are selectively excited by partial pumping. We observe a high anticorrelation between the two beams output from the ring modes. This can be considered as the generalization of alternate oscillations reported previously. We find that the outputs exhibit a robust slow modulation of 4–10 MHz, and explain it by the quasi-degeneracy of the resonator modes.

Key words: two-dimensional laser diodes, bidirectional output, nonlinear dynamics, resonator modes

 

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