Martin Krejci

Title: Martin Krejci: Innovator in High Power Semiconductor Laser Diodes

Introduction

Martin Krejci is a notable inventor based in Zurich, Switzerland. He has made significant contributions to the field of semiconductor technology, particularly in the development of high power laser diodes. With a total of 3 patents to his name, Krejci's work has had a substantial impact on the industry.

Latest Patents

One of Krejci's latest patents focuses on high power semiconductor laser diodes. This innovative laser source comprises a bar of laser diodes with a first coefficient of thermal expansion (CTE) on a submount that has a second coefficient CTE, along with a cooler that has a third coefficient CTE. The assembly of the submount and cooler demonstrates an effective fourth coefficient CTE that differs from the initial CTE. This difference results in deformation of the crystal lattice in the active regions of the lasers due to mechanical stress. The CTE is strategically selected to be either lower than both the second and third coefficients or positioned between them. The submount may consist of layers of materials with varying CTEs, such as a copper layer of 10-40 micrometers in thickness and a molybdenum layer of 100-400 micrometers in thickness, or it may be made from a single material with a varying CTE. Both approaches lead to a CTE that varies across the thickness of the submount.

Career Highlights

Throughout his career, Martin Krejci has worked with prominent companies in the technology sector. Notable among these are Bookham Technology Limited and Oclaro Technology Limited. His experience in these organizations has contributed to his expertise in semiconductor technologies and laser applications.

Collaborations

Krejci has collaborated with several professionals in his field, including Norbert Lichtenstein and Stefan Weiss. These collaborations have likely enriched his work and led to advancements in semiconductor technology.

Conclusion

Martin Krejci is a distinguished inventor whose work in high power semiconductor laser diodes has made a significant impact on the industry. His innovative patents and collaborations reflect his dedication to advancing technology in this field.