September 2007

Ground-Based Telescopes for the 21st Century

Patricia Daukantas

Astronomers are reaping the fruits of two decades of research in adaptive optics and inno-vative telescope design. Despite funding uncertainties, plans are moving forward to build a new generation of large optical and infrared telescopes in remote corners of the globe.

Laser-Induced Fluorescence: Spectroscopy in the Sky

Scientists are using laser-induced fluorescence to assess temperature and wind in a largely unstudied layer of the Earth’s atmosphere. Their results are crucial to our understanding of solar-terrestrial relations and lay the groundwork for studies of global warming and atmospheric turbulence.

Optical Atomic Clocks—from Dream to Reality

Recent developments in atomic physics and laser technology, especially techniques for laser cooling and the manipulation of atoms, have enabled the realization of so-called Cesium fountain atomic clocks with relative accuracy approaching 4 x 10-16.

Optical Tunable Dispersion Compensators Based onThermally Tuned Fiber Bragg Gratings

Fiber Bragg gratings are well positioned to respond to the growing need for more stringent control of dispersion compensation. Thermal tuning has proven to be an effective technique for achieving this goal.

Ionic Liquids for Lunar-Telescope Mirrors

Cells Act as Optical Fibers in the Eye

Did You Know?

Optimax Maximizes Learning to Succeed

Optomechanics and the Small-Displacement Domain

Congressional Fellows

Visual Optics Research in Spain: A Historical Perspective

OPN Talks with John L. Hall

OSA’s Finances in the 1980s

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