What Is the Lasers and Electro-Optics Society?

The Lasers and Electro-Optics Society (LEOS) was the name of the IEEE technical society that served researchers and engineers working in lasers, photonics, and related fields from 1985 until 2009, when it was renamed the IEEE Photonics Society. The organization traces its origins to the Quantum Electronics Council (QEC), founded in 1965 to co-sponsor the new IEEE Journal of Quantum Electronics, the first engineering-focused journal devoted to quantum electronics. Over more than four decades the society built a portfolio of journals, conferences, and technical committees covering the science and engineering of photons from ultraviolet to terahertz frequencies. Its history is documented by the IEEE Engineering and Technology History Wiki on the Lasers and Electro-Optics Society.

The society's core identity was shaped by the convergence of two research traditions: laser physics, which produced the coherent light sources, and electro-optics, which developed the modulators, detectors, and waveguides needed to make those sources useful in systems. Together these strands defined a discipline that was neither purely physics nor purely electrical engineering, and LEOS became its principal professional home within IEEE.

History and Organizational Evolution

The organization passed through several names before settling on LEOS in 1985. It began as the Quantum Electronics Council in 1965 under IEEE sponsorship, became the Quantum Electronics and Applications Society (QEAS) in 1977, and adopted the LEOS designation on January 1, 1985 under the leadership of Robert L. Byer. The name change reflected the society's broadening scope: quantum electronics as a phrase had come to emphasize research over engineering, while lasers and electro-optics pointed directly at the devices and systems driving the photonics industry. Membership grew by more than 65 percent during the 1985 to 1986 period as the optical fiber communications industry expanded and created a large community of practicing engineers with a natural home in LEOS. In 2008 and 2009, under president John Marsh, the society adopted its current name, IEEE Photonics Society, to reflect the broadened scope of its technical interests beyond lasers alone. The current society's history is maintained on the IEEE Photonics Society's official history page.

Publications and Conferences

LEOS was a substantial publisher within IEEE. Its flagship journal, the IEEE Journal of Quantum Electronics, launched in 1965 and remained among the most cited venues for laser and photonics research throughout LEOS's existence. The Journal of Lightwave Technology, co-sponsored with the IEEE Communications Society, covered fiber-optic systems and became essential reading for the optical networking community. Photonics Technology Letters, approved in 1988 and launched in January 1989, provided a rapid-publication outlet for device results. On the conference side, LEOS co-sponsored CLEO (Conference on Lasers and Electro-Optics), which grew from the 1967 Conference on Laser Engineering and Applications, as well as the Optical Fiber Communication Conference (OFC). The society also managed the International Semiconductor Laser Conference and a range of topical workshops. These events and publications collectively shaped the peer literature for a generation of photonics researchers, and the conference proceedings are archived in IEEE Xplore's LEOS conference collection.

Technical Scope

The society's field of interest encompassed lasers, optical devices, optical fibers, and lightwave technology in systems where quantum electronic devices are key elements. This scope covered semiconductor lasers, solid-state lasers, gas lasers, nonlinear optical devices, photodetectors, optical modulators, optical amplifiers, and the fiber and waveguide infrastructure connecting them. LEOS members contributed to standards activities, organized workshops on emerging topics such as optical sensing in semiconductor manufacturing, and published educational materials through its newsletter. The society's breadth made it a point of intersection for electrical engineers, physicists, and materials scientists working on photonic devices and systems.

Applications

The Lasers and Electro-Optics Society served the professional community working in:

• Fiber-optic communications and long-haul optical networking
• Semiconductor laser development for consumer electronics and data storage
• Precision instrumentation including laser interferometry and optical sensors
• Biomedical photonics and imaging systems
• Defense and industrial applications of high-power and pulsed laser systems