Vortex digital holographic microscope system based on dual liquid crystal spatial light modulator

Abstract

The invention relates to a vortex digital holographic microscope system based on a dual liquid crystal spatial light modulator. According to the vortex digital holographic microscope system, an optical path adopts a dual-arm structure of a Michelson interferometer; collimated laser is incident into a first beam splitting prism, and a rear optical path is divided into two paths of a reference arm and an interference arm; an interference arm is sequentially provided with a stage having an electronically controlled displacement stage, an objective lens having an electronically controlled turntable, a first 4f lens, a second beam splitting prism, an electronically controlled field-of-view aperture, a second 4f lens, a pure phase liquid crystal spatial light modulator, a Fourier transform mirror, a third beam splitting prism and a CMOS camera; a reference arm is sequentially provided with an intensity liquid crystal spatial light modulator, a light blocking plate and two mirrors ; and Kohler illumination is adopted for illumination above a sample. The vortex digital holographic microscope system can achieve the purpose of acquiring complex wavefront of the observed sample by imaging atone time.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for creation of opaque gratings called LCs (Liquid Crystals) within liquid crystalline materials such as silicon dioxide used during manufacturing processes. These gratings allow for precise control over how much energy enters into certain parts of these materials without affecting other areas. By focusing lasers onto specific regions inside this material, it becomes possible to achieve complicated waves front patterns through destructive interferometry techniques like cohering. Additionally, there may also include image processing algorithms to enhance visual quality when observing small samples at various angles. Overall, this new technique improves efficiency and accuracy in analyzing biological structures while minimizing damage from external sources.

Problems solved by technology

This patented technical problem addressed in this patents relates to traditional methods used during digital holoamography (DIH), specifically off axis holograms or other techniques like interference technique. These conventional methods are time consuming and require expensive equipment. Additionally, these existing methodologies may result in poor quality results if applied at different locations within an object being studied.

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