Abstract
Lasing is a well-established field in optics with several applications. Yet, having lasing or huge amplification in other wave systems remains an elusive goal. Here, we utilize the concept of coherent perfect absorber-laser to realize an acoustic analog of laser with a proven amplification of more than 10 4 in terms of the scattered acoustic signal at a frequency of a few kHz. The obtained acoustic laser (or the coherent perfect absorber-laser) is shown to possess extremely high sensitivity and figure of merit with regard to ultra-small variations of the pressure (density and compressibility) and suggests its evident potential to build future acoustic pressure devices such as precise sensors.
Original language | English (US) |
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Pages (from-to) | 104902 |
Journal | Journal of Applied Physics |
Volume | 129 |
Issue number | 10 |
DOIs | |
State | Published - Mar 14 2021 |
ASJC Scopus subject areas
- General Physics and Astronomy