  In this study, we present a detailed analysis of deflections in a butterfly
wing utilizing digital holographic interferometry. Our methodology revolves
around an off-axis lensless Fourier holographic setup, and we employ laser
excitation to induce deflections in the object. The implementation of a digital
holographic interferometry setup, tailored for rapid monitoring of
micro-deformation, is a central aspect of the research. We offer an overview of
the theoretical foundations of this technique, complemented by both
experimental and simulated tests aimed at validating our findings.
Significantly, our investigation focuses on the detailed analysis of the micro
structures found on the wing of the Morpho butterfly. The insights garnered
from our study not only affirm the precision and potential of this methodology
but also shed light on promising avenues for further exploration, especially in
the domain of high-precision deflection sensing and its diverse applications.

Optics;Biological Physics