Suarez Rafael A B, Ambrosio Leonardo A, Neves Antonio A R, Zamboni-Rached Michel, Gesualdi Marcos R R
Opt Lett. 2020 May 1;45(9):2514-2517. doi: 10.1364/OL.390909.
We report, to the best of our knowledge, the first optical trapping experimental demonstration of microparticles with frozen waves. Frozen waves are an efficient method to model longitudinally the intensity of nondiffracting beams obtained by superposing copropagating Bessel beams with the same frequency and order. Based on this, we investigate the optical force distribution acting on microparticles of two types of frozen waves. The experimental setup of holographic optical tweezers using a spatial light modulator has been assembled and optimized. The results show that it is possible to obtain greater stability for optical trapping using frozen waves. The significant enhancement in trapping geometry from this approach shows promising applications for optical tweezers micromanipulations over a broad range.
据我们所知，我们首次报道了利用冻结波对微粒进行光镊实验演示。冻结波是一种纵向模拟通过叠加具有相同频率和阶数的同向传播贝塞尔光束所获得的无衍射光束强度的有效方法。基于此，我们研究了两种冻结波作用在微粒上的光力分布。利用空间光调制器的全息光镊实验装置已组装并优化。结果表明，利用冻结波进行光镊捕获可以获得更高的稳定性。这种方法在捕获几何结构上的显著增强显示了光镊在广泛范围内进行微操纵的应用前景。
