Jian Han

Title: The Innovative Contributions of Jian Han

Introduction

Jian Han is a prominent inventor based in Urumqi, China. He has made significant contributions to the field of nonlinear optical crystals, holding a total of 2 patents. His work focuses on the development and preparation of advanced materials that have various applications in optical devices.

Latest Patents

One of Jian Han's latest patents is for a nonlinear optical crystal of guanidinium tetrafluoroborate. This crystal has a chemical formula of [C(NH)]BF and a molecular weight of 146.89. It belongs to the trigonal crystal system and has a space group of R3m. The lattice parameters are a=7.4634(10)Å, b=7.4634(10)Å, c=9.1216(19)Å, and Z=3. This crystal exhibits an ultraviolet cutoff edge of 200 nm and has a frequency-multiplication response that is 4-5 times that of the commercialized nonlinear optical crystal KDP. The crystal can be grown using various methods, including hydrothermal, room-temperature solution, evaporation, or solvothermal methods. It is capable of producing harmonic light outputs from fundamental frequency light generated by a Nd:YAG laser.

Another significant patent by Jian Han is for a deep ultraviolet nonlinear optical crystal of barium borate hydrate. The chemical formula for this crystal is BaBOH, and it belongs to the monoclinic system with a space group of P2. The crystal cell parameters are a=6.7719(10)Å, b=21.1195(4)Å, c=6.8274(10)Å, and β=119.3950(10)°. The molecular weight of this crystal is 752.65. The preparation method involves programmed cooling or natural cooling using a hydrothermal method. This crystal has a frequency-doubling effect of about 2 times that of KDP and an ultraviolet cut-off edge below 175 nm. It is widely used in the preparation of nonlinear optical devices.

Career Highlights

Jian Han is affiliated with the Chinese Academy of Sciences, where he conducts his research and development work. His innovative contributions have positioned him as a key figure in the field of nonlinear optics.

Collaborations

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