The invention discloses a scattering imaging device and method penetrating through a dynamic liquid media. The device comprises a light source and adjustment module, a spatial light modulator, a dynamic imaging module and an image detection module; the light source and adjustment module is used for generating a collimated Gauss beam; a phase pattern of a zero-order Bessel beam is loaded on the spatial light modulator, and used for modulating the Gauss beam into a non-diffracting zero-order Bessel beam; the dynamic imaging module comprises ground glass and a dynamic scattering media; a target to be detected is arranged between the ground glass and the dynamic scattering media; the ground glass can rotate along a direction perpendicular to a light path, and used for scattering the zero-orderBessel beam; and the dynamic scattering media is used for acquiring the spectrum information of the light field of the target to be detected. According to the device and method provided by the invention, the incident Gauss beam light is modulated into the non-diffracting zero-order Bessel beam, so that the scattering imaging effect penetrating trough the dynamic liquid media is better, and the imaging resolution is improved.

Scattering imaging device and method penetrating through dynamic liquid media

The invention discloses a method for producing dark and anti-dark non-diffraction beams. The method comprises the following steps: acquiring dynamically and continuously changed Bessel beams with different orders, and overlaying the obtained Bessel beams with different orders, producing a dark non-diffraction beam when the odd-order Bessel beam weight is greater than the even-odor Bessel beam weight; and producing the anti-dark non-diffraction beam when the odd-order Bessel beam weight is less than the even-odor Bessel beam weight. The invention further provides a device for producing dark andanti-dark non-diffraction beams, the device comprises a light source, a beam expander, a spatial light modulator, a charge coupling element and a computing processing system; the stable dark and anti-dark non-diffraction beams can be produced through above method, thereby laying the foundation for researching optical nonlinear response and particle trapping.

Zhu Xinlei

Papers

Method and device for producing dark and anti-dark non-diffraction beams