Company Filing History:
Years Active: 2006-2011
Title: Klaus Dupre: Innovator in Crystal Growth Technology
Introduction
Klaus Dupre is a notable inventor based in Idar-Oberstein, Germany. He has made significant contributions to the field of crystal growth technology, particularly in the development of methods for producing highly uniform low-stress single crystals. With a total of 3 patents to his name, Dupre's work has implications for various optical applications.
Latest Patents
Dupre's latest patents focus on methods and apparatuses for creating highly uniform low-stress single crystals by drawing from a melt. One of his innovative methods involves immersing a seed crystal, held at a temperature below its melting point, into a melt within a crucible. The process includes drawing the crystal from the melt while rotating the crystal and/or melt relative to each other. This technique maintains a planar phase boundary surface by monitoring the surface temperature and adjusting the rotation speed to control temperature fluctuations. The resulting single crystals have a diameter of at least 50 mm and exhibit no visible growth strips in a fishtail pattern when observed under specific conditions. These crystals possess an index of refraction uniformity of less than 1 ppm and a stress birefringence of less than 1 nm/cm at 193 nm, making them suitable for optical elements in DUV lithography.
Career Highlights
Throughout his career, Klaus Dupre has worked with prominent companies in the field, including Schott AG and Schott Glas. His expertise in crystal growth has positioned him as a key figure in advancing technologies related to optical materials.
Collaborations
Dupre has collaborated with notable colleagues such as Lothar Ackermann and Daniel Rytz, contributing to the development of innovative solutions in crystal technology.
Conclusion
Klaus Dupre's contributions to the field of crystal growth technology have paved the way for advancements in optical applications. His innovative methods and collaborative efforts continue to influence the industry positively.