SESI Commercial LidarScience & Engineering Services (SESI) is a diversified $345M small business headquartered in Columbia, Maryland with over 600,000 square feet of laboratories, manufacturing cells, offices and high-bays in Alabama, Georgia, Kentucky and Maryland. Created in 1988 by Dr. Sang Lee, the Company is privately held and serves as a real success story along the lines of "we started in a one room office". Today, our Columbia Headquarters and Innovation Center is ready to support with 32,000 square feet of R&D facilities for optical, electrical, mechanical, software, and algorithm design, development, rapid prototyping, system integration and testing. As a point of reference, SESI is Prime for the Joint Biological Standoff Detection System and our manufacturing facilities are ISO 9001:2008/AS 9100:2004 Rev B, registered with Eagle Services. Further, we are also compliant with ISO 9004.

Dr. Lee

Our Commitment To You

Every day, Dr. Lee's doctoral training in Physics continues to drive a culture of high ethics, dedication, customer service, and use of the scientific method across all lines of the Company. To this end, SESI has been collaborating with diverse customers and building commercial portable digital lidars for atmospheric monitoring for nearly twenty years.

Optical Products

SESI manufactures rugged, reliable opto-mechanical and opto-electronic components for optical instruments. Next

Lidars and Lasers

We have provided lidar and laser units to the government and military for many years, and now this quality can be passed to your company. Next


Our staff is prepared to create custom software for your specific needs. Our experience provides high reliability that can complement your product. Next

Custom Engineering

Scientists and engineers at SESI are ready to work with your organization to provide a custom solution that will fit your requirements. Next