Abstract

Recently it was shown by one of us [1] that even a slight relativistic change of mass of a single free electron may result in large nonlinear effects such as hysteresis and bistability in cyclotron resonance of the electron revolving in a dc magnetic field under the action of EM wave at the main frequency (Ω ≃ Ω₀, where Ω₀=eH₀/m₀c is the unperturbed cyclotron frequency with ${\overrightarrow{\text{H}}}_0$ being a dc magnetic field). It was also shown that higher-order (multiphoton) resonances are feasible, whereby the microwave cyclotron motion of an electron is excited by optical laser using either biharmonic driving with the optical frequencies ω₁ and ω₂ such that ω₁−ω₂=n Ω where n is integer [2a,b] (the so called cyclo-Raman excitation [3]), or higher-order subharmonics with ω = n Ω [2c].

© 1988 Optical Society of America