High NA and Long Working Distance Microscope Objective Lenses
Overview of Optical Tweezers Technology
Optical tweezer technology is a tool that utilizes highly focused laser beams to capture and manipulate tiny particles, such as cells and nanoparticles. This technology generates force through the transfer of light, enabling non-contact control of small objects. The focused laser beam creates a strong gradient field near its focal point, attracting tiny particles to the region with high light intensity and thus facilitating capture.
Optical tweezers can manipulate nano-scale particles without causing physical damage to the samples and have demonstrated promising applications across various fields. To achieve effective particle capture in atom capture experiments, lasers typically need to converge to the micron level. Therefore, the microscope objective used in optical tweezer systems must possess high resolution. Increasing the numerical aperture (NA) is one useful method for obtaining high-resolution objective lenses. Since the samples for atom capture experiments are often placed in a vacuum chamber, the microscope objective must also provide a long working distance.