Rays and Waves

1.3 billion years ago, two black holes collided in a distant galaxy, sending ripples through the fabric of spacetime. On September 14, 2015, those ripples finally reached Earth and humanity detected gravitational waves for the very first time.
In this episode of Rays and Waves, Daniel and Steven sit down with Dr. Gabriele Vajente, Deputy Head of Systems Science and Engineering at LIGO, who was a postdoc on the project during that historic detection. For more than fifteen years, Gabriele has been at the center of the groundbreaking technologies and discoveries that have opened an entirely new window on the universe.
We explore how LIGO’s exquisitely sensitive instruments can measure distortions thousands of times smaller than a proton, the optical engineering innovations that make it possible, and what gravitational-wave astronomy reveals about some of the most violent events in the cosmos. At the heart of it all are the people like Gabriele who’ve dedicated decades to pushing physics and engineering to their limits.
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Intro music is Good Vibe by Twisterium. Thanks for the great tunes!

In this episode of Rays and Waves, Daniel and Steven take a nostalgic dive back into the world where they both began their scientific journeys: optical tweezers. These remarkable tools, using tightly focused laser beams to exert forces and torques on microscopic objects, have transformed how we manipulate cells, DNA, bacteria, and so much more. Their invention by Arthur Ashkin in 1986 ultimately earned him the 2018 Nobel Prize in Physics, and today, optical manipulation stands as a thriving field with thousands of active researchers.
Our guest is one of its true pioneers. For more than four decades, Halina Rubinsztein‑Dunlop has been at the forefront of exploring how light can push, twist, and guide matter. Her work spans quantum optics, optically driven micromachines, and cutting‑edge applications in biological systems. Her impact has been recognized at the highest levels, including the SPIE Gold Medal (the society’s most prestigious honor), and she will soon serve as an SPIE Director for the 2026–2028 term.
Halina is also a powerful advocate for women in science, a topic we excitedly dive into during our conversation.
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Intro music is Good Vibe by Twisterium. Thanks for the great tunes!

When we think about optical systems, lenses and light often steal the spotlight. But behind every high-performance optical instrument lies a critical foundation: Optomechanics. From precision mounts to thermal stability, the mechanical design determines whether an optical system performs flawlessly or fails spectacularly.
In this episode of Rays and Waves, Daniel and Steven sit down with Nathan Wallace, an optomechanical expert from Optikos, to explore the art and science of building the structures that hold optics together. We dive into why optomechanics is more than just “hardware,” how tolerances and alignment drive system performance, and what it takes to design for environments ranging from factory floors to outer space.
If you enjoy the show, share it with your colleagues, subscribe, and leave us a review! Got thoughts or questions? Reach out at [email protected]
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The current narrative is that Artificial Intelligence is reshaping industries at breakneck speed. Is optics no exception? In this special episode of Rays and Waves Daniel and Steven host the show's very first panel discussion! They bring together six experts from across the optics landscape to try to understand: How will AI change optical engineering?
From accelerating lens design to enabling smarter photonic systems, AI promises breakthroughs but also raises big questions about trust, transparency, and the role of human expertise.
The panel consists of Craig Olsen, Jenny Atwood, Erin Elliot, Akil Bhagat, Cory Boone, and Roinan Siew, and they cover the opportunities and challenges that come with integrating AI into optical workflows.
Stuff mentioned in the episode:
Material Craig mentioned Ronian sent out: Future of optical system and lens design in the AI era

The effect Craig mentions is Gell-Mann amnesia effect (https://en.wikipedia.org/wiki/Gell-Mann_amnesia_effect)

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Intro music is Good Vibe by Twisterium. Thanks for the great tunes!

Standards may not grab headlines, but they quietly shape the world. In this episode of Rays and Waves, we shine a light on the unsung hero of modern optical engineering: optical standards.
From the fiber optics enabling global connectivity, via laser grocery scanners, to the precision lenses the James Webb telescope, none of it works without agreed-upon rules and measurements. These standards ensure interoperability, safety, and reliability across millions of devices.
Joining Daniel and Steve is Eric Herman, a dedicated volunteer helping to develop and maintain these critical frameworks. Together, we’ll explore how standards are created, the challenges of keeping pace with cutting-edge technology, and why this work matters more than ever.
If you enjoy the show, share it with your colleagues, subscribe, and leave us a review! Got thoughts or questions? Reach out at [email protected]
Intro music is Good Vibe by Twisterium. Thanks for the great tunes!