Diffractive Behavior of Forced Harmonic Oscillator Caused by Phase Slippage

Hiraiwa Toshihiko, Soutome Kouichi, Tanaka Hitoshi

doi:10.11316/butsuri.76.5_284

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Other Title

位相の滑りが生み出す強制振動の回折的振る舞い
イソウノスベリガウミダスキョウセイシンドウノカイセツテキフルマイ

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Description

<p>We investigate a simple forced harmonic oscillator with a natural frequency varying with time. It is shown that the time evolution of such a system can be written in a simplified form with Fresnel integrals, as long as the variation of the natural frequency is very slow compared to the oscillation period. As a result, we found that a forced harmonic oscillator with a slowly-varying natural frequency is essentially equivalent to diffraction of light.</p>

Journal

Butsuri

Butsuri 76 (5), 284-288, 2021-05-05

The Physical Society of Japan