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April 2022 Issue
Feature Articles
![](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/articles/2022/0422/features/kwon-icon-2.jpg?t=638452549337297638)
From Lab to Clinic
OPN highlights three biophotonics companies that are bringing lab-developed technology to the medical suite—and beyond.
by Karen Kwon![](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/articles/2022/0422/features/cartlidge-icon.jpg?t=638452549306352573)
How to Span the Quantum Gap
Building continental-scale quantum communications links is an arduous task, but scientists believe they have the technology in hand.
by Edwin Cartlidge![](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/articles/2022/0422/features/wills-icon.jpg?t=638452549366621130)
Marvelous MIRI
The Webb Space Telescope’s Mid-Infrared Instrument—the coolest optical gadget in space—is getting ready for its close-up.
by Stewart WillsDepartments and Columns
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Research and Industry News
A step toward laser fusion / Mapping methane / Imaging vision’s chemistry / COVID-19 breathalyzer / Optical trapping near absolute zero / Toward zero-carbon cities / Singapore quantum network / Gender bias in labs / Photon recycling
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Toward Zero-Carbon Cities
Copenhagen, Denmark, has concrete plans to achieve carbon neutrality by 2025—setting an example for cities worldwide.
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Checking In with the GEMM Initiative
OPN talks with three scientists involved in an Optica-led effort that puts optical sensors to work in the battle against both local pollution and global climate change.
![](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/articles/2022/0422/departments/career-icon.jpg?t=638452549157154152)
Interviewing and Working in a (Post-)Pandemic World
In an age of rapid change, effective engagement with others—whether in person or remotely—requires being mindful of the fundamentals.
![](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/articles/2022/0422/departments/market-icon.jpg?t=638452549260998292)
Healthy Companies, Scarce Workers
Optics and photonics companies are reporting strong profit margins—but worker shortages may hold back growth.
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Also in this Issue
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From the Hospital
Optical and photonic technology draws from many different disciplines—and finds applications across society.
![](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/articles/2022/0422/departments/looking-img2.jpg?t=638452549251054716)
30, 20, and 10 Years Ago in OPN
Virtual reality; optical coherence tomography; Max Planck.
![](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/articles/2022/0422/departments/focus-img8.jpg?t=638452549221730017)
News from the Society
Wyant named 2022 Ives Medal winner / Optica Fellow stories / NAE inductees / Engineers Week / Wolf Prize winners / Aspect is 2022 Honorary Member / Year of Glass / Advancing women and girls in science Remembering Greivenkamp / Thank you, editors and volunteers
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Thank You, Optica Foundation Donors!
The Optica Foundation recognizes and fosters excellence in the next generation of the field.
![](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/articles/2022/0422/departments/afterimage-icon.jpg?t=638452549154227276)
Europium-Doped Glass
A germanate glass sample doped with europium. When illuminated with invisible UV light, the europium atoms absorb this radiation and emit red light—making the invisible visible.