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Control of the oscillation threshold with asymmetric gain in operational amplifiers

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Abstract

We have observed a quench of lasing at an exceptional point in an electronic circuit system by applying an asymmetric gain in coupled oscillators. Because of the analogy between an oscillation in a laser and an oscillation in an operational amplifier, the oscillation stops when the system hits an exceptional point. This phenomenon is also theoretically investigated.

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Authors and Affiliations

  1. Department of Nano and Electronic Physics, Kookmin University, Seoul, 02707, Korea

    Sungmook Kang & Heeso Noh

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  1. Sungmook Kang
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  2. Heeso Noh
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Correspondence to Heeso Noh.

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Kang, S., Noh, H. Control of the oscillation threshold with asymmetric gain in operational amplifiers. Journal of the Korean Physical Society 68, 752–755 (2016). https://doi.org/10.3938/jkps.68.752

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  • DOI: https://doi.org/10.3938/jkps.68.752

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