Hongji Qi

Title: Innovations of Hongji Qi in Crystal Growth Technology

Introduction

Hongji Qi is a prominent inventor based in Shanghai, China. He has made significant contributions to the field of crystal growth technology, particularly in the development of methods for producing high-quality DKDP and KDP-type crystals. With a total of 3 patents, his work has implications for advanced laser devices.

Latest Patents

One of his latest patents is titled "Method for growing long-seed DKDP crystal by two-dimensional motion." This innovative method allows for the growth of crystals along a cylindrical surface, eliminating the low optical quality associated with cylinder-cone interfaces. By avoiding three flow regions that typically lead to inclusion formation, this technique ensures a uniform hydrodynamic environment, thereby improving growth velocity and morphology stability. This method is particularly beneficial for the large-size, high-quality DKDP crystals required by ICF laser devices.

Another notable patent is the "Method for rapid growth of long seed KDP-type crystals." This pyramidal growth method restricts the lower end of the long-seed crystal while allowing the upper end to grow freely into a pyramidal shape. The simultaneous growth of four prismatic faces minimizes growth stress and enhances optical quality. The use of blade-like stirring paddles during the growth process ensures high optical uniformity in the cut optical elements.

Career Highlights

Hongji Qi has worked with esteemed institutions such as the Chinese Academy of Sciences and Chongqing University. His experience in these organizations has allowed him to refine his expertise in crystal growth and contribute to advancements in the field.

Collaborations

He has collaborated with notable colleagues, including Bin Wang and Jianda Shao, further enhancing the impact of his research and innovations.

Conclusion

Hongji Qi's innovative methods in crystal growth technology represent significant advancements in the field. His contributions are vital for the development of high-quality crystals used in advanced laser applications.