Generation of Coherent Phonons via a Cavity Enhanced Photonic Lambda
Scheme
- URL: http://arxiv.org/abs/2008.10361v3
- Date: Thu, 8 Oct 2020 12:09:05 GMT
- Title: Generation of Coherent Phonons via a Cavity Enhanced Photonic Lambda
Scheme
- Authors: Jeremy Bourhill, Natalia do Carmo Carvalho, Maxim Goryachev, Serge
Galliou, Michael E. Tobar
- Abstract summary: We demonstrate the generation of coherent phonons in a quartz Bulk Acoustic Wave (BAW) resonator through the photoelastic properties of the crystal.
This is achieved by imbedding a single crystal BAW resonator between the post and the adjacent wall of a microwave reentrant cavity resonator.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We demonstrate the generation of coherent phonons in a quartz Bulk Acoustic
Wave (BAW) resonator through the photoelastic properties of the crystal, via
the coupling to a microwave cavity enhanced by a photonic lambda scheme. This
is achieved by imbedding a single crystal BAW resonator between the post and
the adjacent wall of a microwave reentrant cavity resonator. This 3D photonic
lumped LC resonator at the same time acts as the electrodes of a BAW phonon
resonator, and allows the direct readout of coherent phonons via the linear
piezoelectric response of the quartz. A microwave pump, $\omega_p$ is tuned to
the cavity resonance $\omega_0$, while a probe frequency, $\omega_{probe}$, is
detuned and varied around the red and blue detuned values with respect to the
BAW phonon frequency, $\Omega_m$. The pump and probe power dependence of the
generated phonons unequivocally determines the process to be electrostrictive,
with the phonons produced at the difference frequency between pump and probe,
with no back action effects involved. Thus, the phonons are created without
threshold and can be considered analogous to a Coherent Population Trapped
(CPT) maser scheme.
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