Optical frequency combs are often described as light rulers or rainbow rulers, and the metaphor is apt. Just as a school ruler carries evenly spaced black lines for measuring distance, a frequency comb produces millions of perfectly, evenly spaced colours of light. Because those colours are locked to a known spacing, the comb can be used to measure the frequency of light with extraordinary accuracy, and by extension to measure time, distance, and chemical signals. The original laboratory-scale comb was pioneered in the late 1990s by John Hall and Theodor Hänsch, work that earned them the 2005 Nobel Prize in Physics. Combs have since enabled the creation of optical atomic clocks, the most precise clocks in the world, and have found roles in experiments probing the foundations of physics itself.

The problem has always been size and expense. Conventional comb-generating systems occupy whole optical tables and demand careful alignment, which has kept the technology trapped in laboratories even as potential applications multiplied. Miniaturized versions, known as microcombs, have been under development for years, but their control and stabilization, which are essential for demanding applications, have often been complicated and difficult. The new research suggests a route around those obstacles by fundamentally redesigning how the comb is produced, flipping the architecture that both conventional systems and existing miniaturized versions rely upon.

The path to the breakthrough began in 2021, when Erkintalo, working with his students, began exploring a potential new way to generate chip-scale frequency combs. Through theoretical work, the team predicted that two laser beams launched into a chip-scale ring resonator could generate a new type of frequency comb. That prediction became reality in 2024, when the Auckland researchers teamed up with Grégory Moille and Kartik Srinivasan of the University of Maryland and NIST to demonstrate the idea in the laboratory. While that demonstration was a groundbreaking physics proof of concept, practical applications remained unrealized, and the team spent the following two years pushing the platform toward usefulness.

The crucial advance reported in Nature is that the new comb can be generated by two lasers placed an octave apart. The term octave, borrowed from music, refers to a doubling of frequency, so the two pump lasers sit at opposite ends of the spectrum with one frequency exactly twice the other. In a conventional laboratory system and in existing miniaturized architectures, light from a single laser cascades and stretches outward to cover a wide spectrum. The new design inverts that picture: it starts with two lasers far apart at opposite ends of the spectrum, and the system then automatically fills in all the light frequencies between those two boundaries. This self-aligned arrangement overcomes challenges that hampered the performance of existing architectures.

To showcase the platform, the researchers used the chip-based system to perform the three tasks most closely associated with frequency combs. The device generated precise optical frequencies, produced low-noise millimetre-wave signals of the kind needed in advanced communications and radar systems, and performed integrated optical clock readout, the process by which the ticking of an atomic clock is converted into a usable signal. Demonstrating all three on a single chip-scale platform is significant because it shows that the miniaturized comb is not merely a curiosity but a functional instrument capable of the workloads that laboratory combs currently carry.

The implications stretch across science and commerce. Portable optical atomic clocks built around chip-scale combs could help map underground variations in mineral deposits, a task that currently requires bulky and expensive equipment. They could also enable navigation systems that do not rely on GPS satellite signals, an increasingly important consideration for autonomous vehicles, aircraft, and military systems that must operate where satellite signals are jammed, blocked, or unavailable. Beyond timekeeping, the researchers point to synchronization in telecommunications networks and sensors capable of detecting extremely small changes in their environments, from minute shifts in distance to subtle chemical signatures.

Moille emphasized the practical significance of the new architecture for the field. Though researchers have been working on chip-integrated optical frequency combs for many years, he noted, their control and stabilization, which are essential for many applications, have often been complicated and difficult. With this new approach, he said, the team finally sees a viable path for their use in deployable atomic timekeeping, which is one of the most demanding and important applications of the technology. That assessment reflects a broader shift in the microcomb community, where the question has moved from whether combs can be miniaturized to whether miniaturized combs can be made stable and simple enough to deploy outside controlled laboratory conditions.

Erkintalo framed the achievement as the culmination of several years of work involving a fantastic international collaboration that brings together the world-leading knowledge and innovation of New Zealand researchers with equally world-leading colleagues in the United States. He also drew attention to the way the breakthrough emerged. The project began not as an engineering programme with a product in mind but as curiosity-driven theoretical work exploring what might happen when two laser beams met inside a chip-scale ring. The commercial implications, he observed, show how new technological applications can emerge from research that is originally driven by curiosity, a pattern that recurs throughout the history of photonics and quantum science.

The team, which has submitted a provisional patent application based on aspects of the work, writes in the Nature paper that reducing the size, weight, power, and cost of optical frequency combs can lead to mass production and move the technology from lab to consumer. If that trajectory holds, the light rulers that today measure the heartbeat of the world’s most precise clocks could one day sit inside navigation units, network equipment, and portable sensors, carrying laboratory-grade precision into everyday technologies. The research was published in Nature on 30 September 2026 under the title Self-aligned optical microcomb emerging between octave-separated lasers, and the authors reported no conflicts of interest.

Subject of Research: Miniaturized chip-scale optical frequency combs generated by octave-separated lasers for portable atomic clocks and precision measurement

Article Title: Technology used by optical atomic clocks may jump from lab to consumer

Article References: Technology used by optical atomic clocks may jump from lab to consumer. (n.d.). Original publication

Image Credits: AI Generated

DOI: Not provided

Keywords: optical frequency combs, microcombs, atomic clocks, photonics, chip-scale lasers, University of Auckland, NIST, Nature, GPS-free navigation, telecommunications, quantum technologies, precision measurement

The vice presidency is a particularly consequential position within Optica’s governance structure. The society operates on a well-defined leadership ladder in which the vice president advances to president-elect and then to president, meaning that the person elected to the 2027 vice presidency is effectively being positioned to guide the organization’s strategic direction in the years that follow. Optica’s board is responsible for overseeing a portfolio that includes flagship scientific meetings, a family of peer-reviewed journals, industry partnerships, education and outreach programs, and policy engagement on behalf of researchers working across optics and photonics. With more than 400,000 members and constituents across the globe, the society’s decisions about which conferences to grow, which emerging subfields to champion, and how to support early-career scientists ripple widely through the community. The election of a new vice president therefore attracts close attention from researchers who want to see their priorities reflected at the top of the organization.

Delfyett’s election brings to the board one of the most technically accomplished figures in ultrafast optics and semiconductor laser research. His scientific reputation was established in part during his time at Bellcore, where he developed what has been described as the world’s fastest and most powerful mode-locked semiconductor laser diode. Mode-locked lasers are devices that produce trains of extremely short optical pulses, often lasting femtoseconds or picoseconds, by locking the phases of many longitudinal modes within the laser cavity. Achieving that feat in a semiconductor diode format, rather than in bulky solid-state systems, opened pathways toward compact, high-repetition-rate sources suitable for telecommunications, clocking, signal processing, and precision measurement. That line of research remains central to modern photonics, as mode-locked semiconductor lasers underpin technologies ranging from optical frequency combs to high-speed data transmission in fiber networks.

Since 1993, Delfyett has built his research program at CREOL, the University of Central Florida’s internationally regarded optics and photonics school, where he directs the Townes Laser Institute and holds the rank of University Distinguished Professor. His scholarly output is extensive: he has authored more than 850 publications and holds 45 U.S. patents, and he has translated laboratory advances into the commercial sphere as a co-founder of Raydiance, Inc., a company associated with ultrafast laser technology. His contributions have been recognized with election to the National Academy of Engineering, the American Physical Society’s Arthur L. Schawlow Prize, and the 2026 SPIE Harold E. Edgerton Award, an honor named for the pioneering electrical engineer and photographer whose stroboscopic imaging work became iconic. He is also a Fellow of APS, AAAS, Optica, the IEEE Photonics Society, SPIE, the National Society of Black Physicists, and the National Academy of Inventors, a collection of distinctions that reflects both scientific depth and breadth of service.

Beyond the laboratory, Delfyett has accumulated a long record of volunteer leadership within the scientific publishing and conference ecosystem. He has served as Editor-in-Chief of the IEEE Journal of Selected Topics in Quantum Electronics and as Chair of the CLEO Steering Committee, the body that helps guide one of the field’s largest annual conferences on lasers and electro-optics. His prior governance experience includes service on Optica’s own Board of Directors, membership on the Board of Governors of the IEEE Photonics Society, the chairmanship of the APS Division of Laser Science, and the presidency of the National Society of Black Physicists. That combination of editorial, conference, and society leadership is precisely the kind of institutional fluency that Optica’s membership tends to reward in board elections, and it positions him to step into the society’s presidential succession track with an intimate knowledge of how its programs operate.

Optica CEO Elizabeth Nolan welcomed the election, emphasizing both Delfyett’s scientific legacy and his service record. According to the society’s announcement, Nolan described him as someone who has spent his career pushing the boundaries of what ultrafast lasers can do, whose vision has helped shape modern photonics, and who is a strong leader, a brilliant scientist, and a dedicated volunteer. She added that the society is thrilled to welcome him to the Board of Directors, where his experience and expertise will help Optica meet the evolving needs of the optics and photonics community. The remarks signal that the board expects Delfyett’s perspective as both a researcher and an entrepreneur to inform its decisions at a time when photonics is expanding into new commercial territory, from silicon photonics in data centers to laser-based manufacturing and quantum technologies.

The two Directors at Large positions, covering the 2027 through 2029 term, went to figures who represent complementary corners of the discipline. Sterling Backus is an Advanced Project Scientist at Thorlabs, Inc., one of the world’s largest suppliers of photonics hardware and instrumentation, and an affiliate researcher at Colorado State University. His dual footing in industry and academia mirrors the reality of a field in which much of the instrumentation driving discovery is developed and manufactured by companies rather than built entirely in university shops. Within Optica, Backus has served on the Meetings Council, the body that shapes the society’s conference portfolio, and he is the program co-chair for the society’s Frontiers in Optics meeting for 2026 and 2027. He is an Optica Fellow and previously served as CLEO program chair in 2017 and general chair in 2019, experience that gives him detailed insight into how large-scale scientific meetings are planned, funded, and adapted to changing community needs.

Frédérique Vanholsbeeck brings a distinctly international and interdisciplinary dimension to the board. She is a professor of physics at Waipapa Taumata Rau, the University of Auckland in New Zealand, where she leads one of Aotearoa New Zealand’s most active biophotonics groups. Biophotonics, the application of light-based technologies to biology and medicine, is among the fastest-growing areas of the field, encompassing optical coherence tomography, fluorescence microscopy, laser tweezers, and optical diagnostics for clinical use. Research groups in this area often sit at the interface of physics, engineering, and the life sciences, and leaders like Vanholsbeeck help ensure that the society’s programs serve researchers who do not fit neatly into traditional disciplinary boxes. Her governance experience includes the presidency of the Australian and New Zealand Optical Society, membership on a Marsden Fund panel, which distributes New Zealand’s major fundamental research grants, and multiple leadership roles in major international and regional conferences. She is also an Optica Fellow.

The geographic and sectoral balance of the new slate is notable. Optica has long emphasized its role as a global society, and the election of a director based in New Zealand alongside two United States-based leaders, one from a university research center and one from industry, reflects an attempt to keep the board representative of a membership that spans continents and career contexts. For researchers in Oceania and the broader Asia-Pacific region, Vanholsbeeck’s presence at the governance table offers a direct channel for the concerns of smaller national optical societies, which often face challenges distinct from those of large North American and European institutions, including limited access to major facilities and the logistical burden of distance from the field’s dominant conference hubs.

For the wider photonics community, the elections arrive at a moment when the discipline’s profile has never been higher. Optical technologies now carry the world’s internet traffic, guide autonomous vehicles, enable the precision manufacturing of semiconductors, and provide the measurement backbone for breakthroughs in timekeeping, navigation, and fundamental physics, including the laser interferometry behind gravitational-wave detection. The leaders chosen to steer Optica’s board will influence how the society invests in meetings, publications, and advocacy as these applications multiply. With Delfyett’s ultrafast laser expertise, Backus’s industry-grounded perspective on instrumentation and conferences, and Vanholsbeeck’s biophotonics and international leadership, the incoming directors bring a blend of technical depth and organizational experience that mirrors the field itself: fast-moving, commercially vital, and increasingly global.

Subject of Research: Election of new leaders to the board of the Optica optics and photonics society

Article Title: Peter J. Delfyett, Sterling Backus and Frédérique Vanholsbeeck will serve on Optica’s Board of Directors

Article References: Peter J. Delfyett, Sterling Backus and Frédérique Vanholsbeeck will serve on Optica’s Board of Directors. (n.d.). Original publication

Image Credits: AI Generated

DOI: Not provided

Keywords: Optica, Peter J. Delfyett, Sterling Backus, Frédérique Vanholsbeeck, ultrafast optics, semiconductor lasers, biophotonics, photonics, board of directors, CREOL, Thorlabs, University of Auckland