4results about How to "Good polarization properties" patented technology

The invention discloses a chiral amine ligand-based room-temperature continuous-wave perovskite laser and a preparation method thereof, a quasi-two-dimensional perovskite film with ordered phase distribution, strong crystal orientation and low lattice distortion degree is obtained by using a chiral amine ligand, and these characteristics endow the film with an excellent four-level material structural system, a high-energy-level material structural system, a high-energy-level material structural system, a high-energy-level material structural system, a high-energy-level material structural system, a high-energy-level material structural system and a high-energy-level material structural system. The carrier pumping efficiency is enhanced, population inversion is facilitated, and the laser threshold is reduced; the energy transfer efficiency from a low two-dimensional phase (n = 1) to a high two-dimensional phase (ngt; 5) is enhanced; the number and strength of hydrogen bonds between the perovskite octahedral frame and the perovskite octahedral frame are increased, and the electroacoustic coupling effect is effectively inhibited. The prepared chiral quasi-two-dimensional perovskite serves as a gain medium and is combined with an optical resonant cavity to prepare a laser, room-temperature low-threshold continuous wave or pulse laser emission can be realized under various coherent light source pumps, the threshold is 1-3 orders of magnitude lower than that of a traditional semiconductor laser, and the optimized threshold can reach 1.57 W / cm < 2 >.

The purpose of this disclosure is to provide a polarization-sensitive optical coherence tomography apparatus capable of obtaining tomographic images that better reflect the polarization characteristics of a sample. This disclosure is a polarization-sensitive optical coherence tomography apparatus that obtains a signal representing the polarization characteristics of the sample from the interference light between the reflected light of a measurement light illuminating the sample and a reference light used for reference. The apparatus includes two collimators for the reference light arranged opposite each other on the optical path of the reference light, and the optical path length of the reference light is adjusted using these collimators.

The utility model relates to gem processing detection technical field more specifically, relate to a gem cutting and grinding process three -dimensional dynamic optical detection module, including mounting bracket, the mounting bracket includes upper roof, left side board, lower bottom plate and right side board, the upper roof, left side board, lower bottom plate and right side board combine and form the rectangular structure, wherein the middle part of upper roof is provided with fixed hole, the middle part of lower bottom plate is open, the right side and left side of lower bottom plate are provided with first off -axis parabolic mirror and second off -axis parabolic mirror respectively, the upside of first off -axis parabolic mirror and second off -axis parabolic mirror is provided with semiconductor laser and acquisition camera respectively. First off -axis parabolic mirror focuses laser to gem surface, second off -axis parabolic mirror captures the laser signal of gem surface reflection, and reflects it to acquisition camera, realizes the dynamic focusing of curved surface gem detection without aberration, and this detection mode adopts non -contact detection, avoids the damage of gem surface.

The invention discloses a preparation method of an optical cuvette attached with a two-dimensional collagen nanofiber array film layer, which comprises the following steps: firstly preparing a mica sheet substrate, preparing a required buffer solution and a monomer collagen solution, then uniformly dropwise adding the prepared monomer collagen solution on the surface of the mica sheet substrate, and preparing a two-dimensional collagen nanofiber array film layer on the surface of the mica sheet substrate by using an atomic force microscope, so as to obtain the optical cuvette attached with the two-dimensional collagen nanofiber array film layer. The method comprises the following steps: carrying out fine self-adaptive assembly on monomer collagen in a knocking mode, and finally preparing the cuvette from a mica sheet subjected to supervised self-adaptive assembly treatment on the monomer collagen. According to the scheme, the protein nanofibers are manufactured in different areas of the surface of the mica sheet in a knocking mode of an atomic force microscope, fibers with the direction capable of being accurately controlled can be generated under the appropriate acting force of a probe, and the protein nanofiber array in the cuvette prepared through the scheme shows the excellent polarization characteristic and can be used for preparing the protein nanofibers in the cuvette. If the nano-material is used as a mask, a novel biosensor can be innovatively synthesized by combining an electrochemical method, which indicates that the nano-material has wide popularization and application prospects in a plurality of fields.