| PAS | photoacoustic spectroscopy |
| FOM | fiber-optic microphone |
| MZI | Mach-Zehnder interferometer |
| MI | Michelson interferometer |
| FPI | Fabry-Perot interferometric |
| MDP | minimum detectable pressure |
| SNR | signal-to-noise ratio |
| WLI | white light interference |
| SLD | super luminescent diode |
| DAQ | data acquisition |
| Young’s modulus (Gpa) | |
| standard atmospheric pressure (Pa) | |
| wavelength of the light source (nm) | |
| the static cavity length (μm) | |
| the dynamic cavity length variation (μm) |
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