Roland Aloisius Jaeger

Title: Roland Aloisius Jaeger: Innovator in Vertical Cavity Surface Emitting Lasers

Introduction

Roland Aloisius Jaeger is a notable inventor based in Neu-Ulm, Germany. He has made significant contributions to the field of laser technology, particularly with his invention of the Vertical Cavity Surface Emitting Laser (VCSEL). His work has implications for various applications in telecommunications and optical devices.

Latest Patents

Jaeger holds a patent for a Vertical Cavity Surface Emitting Laser. This invention describes a VCSEL and a method for its manufacturing. The VCSEL comprises a first electrical contact, a substrate, a first distributed Bragg reflector, an active layer, a distributed heterojunction bipolar phototransistor, a second distributed Bragg reflector, and a second electrical contact. The distributed heterojunction bipolar phototransistor includes a collector layer, a light-sensitive layer, a base layer, and an emitter layer. The design allows for optical coupling between the active layer and the distributed heterojunction bipolar phototransistor, providing active carrier confinement. This innovation ensures that the optical mode of the VCSEL is self-positioning according to the active carrier confinement during its operation.

Career Highlights

Jaeger is associated with Koninklijke Philips Corporation N.V., where he has been able to apply his expertise in laser technology. His work at Philips has allowed him to contribute to advancements in optical devices and systems.

Collaborations

Jaeger has collaborated with Philipp Henning Gerlach, enhancing the development and application of his inventions.

Conclusion

Roland Aloisius Jaeger is a prominent figure in the field of laser technology, with his invention of the Vertical Cavity Surface Emitting Laser showcasing his innovative spirit and technical expertise. His contributions continue to influence advancements in optical technologies.