Abstract
In this work, the influence of the optothermal effect on mechanical resonance properties of a graphene mechanical resonator is investigated based on an optical fiber-based Fabry–Perot cavity. When optical power rise, the resonance frequency blueshifts in an exponential relationship, whereas amplitude rises in a linear relationship. The tuning range of resonance frequency can reach up to 9.95 % with a total optical power variation of 2.00 mW. The resonance frequency variation tuned by the optothermal effect shows good stability and repeatability. The result is helpful for deviation analysis in graphene mechanical resonators measurement employing optical actuation and detection methods. It can be further used to design graphene mechanical resonator-based tunable devices.
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