Horst E Groneberg

Title: Horst E Groneberg: Innovator in Optical Probing Technologies

Introduction

Horst E Groneberg is a notable inventor based in Pleasanton, CA (US), recognized for his contributions to optical probing technologies. With a total of three patents to his name, Groneberg has made significant advancements in the field of integrated circuit testing.

Latest Patents

Groneberg's latest patents include the Adjustable Split-Beam Optical Probing (ASOP) method. This innovative technique enhances the strength of the modulated signal from laser probing of integrated circuits (ICs). The method involves scanning an IC device under test (DUT) with two spatially separated laser beams. The output from a single laser source is split into two components, each focused on different areas of the DUT. The separation and intensity of the beams are adjustable to maximize the strength of the modulated return signal. Typically, a near-infrared (NIR) laser is used with flip-chip IC devices to account for the band-gap characteristics of the substrate material. Upon reflection from the DUT, the beams are recombined to interfere with one another, allowing for adjustable phase differences to achieve maximum interference. This method significantly improves the signal-to-noise ratio and reduces the time required to acquire useful voltage waveforms.

Another notable patent is the Multi-Resolution Optical Probing System, which features reliable temperature control and mechanical isolation. This optical probe system is designed for probing electronic devices and includes a sample plate that can hold a target device, an optical objective system for collecting reflected or emitted light, and a temperature control chamber to manage the temperature of the target device.

Career Highlights

Groneberg's career is marked by his innovative work at Checkpoint Technologies LLC, where he has developed cutting-edge technologies for the testing of integrated circuits. His expertise in optical probing has positioned him as a leader in this specialized field.

Collaborations

Throughout his career, Groneberg has collaborated with talented individuals such as Guoqing Xiao and David J Morgan. These collaborations have contributed to the advancement of technologies in optical probing and integrated circuit testing.

Conclusion

Horst E Groneberg's contributions to optical probing technologies have significantly impacted the field of integrated circuit testing. His innovative patents and work at Checkpoint Technologies LLC highlight his role as a leading inventor in this domain.