Atomic force microscopy characterization of Zerodur mirror substrates for the extreme ultraviolet telescopes aboard NASA's Solar Dynamics Observatory

Atomic layer graphene as saturable absorber for ultrafast pulsed lasers

Atomic spectroscopy at NIST: 2001

Atomically flat single-crystalline gold nanostructures for plasmonic nanocircuitry

ATST enclosure mechanical and thermal models

ATST: The Largest Polarimeter

Attempt to Generate Narrow Linewidth, CW Terahertz Radiation by Using Optical Frequency Comb

Attenuation of infrared radiation through the low atmosphere

Attenuation of solar radiation in a homogeneous atmosphere

Attosecond Lighthouses

Atypical features of a lunar corona

AU Microscopii and Debris Disks around M Dwarfs

Aura MLS THz observations of global cirrus near the tropopause

Aureole lidar - Instrument design, data analysis, and comparison with aircraft spectrometer measurements

Aureole lidar: Design, operation, and comparison with in-situ measurements

Aurorae and Volcanic Eruptions

Aurorally enhanced infrared emissions

Australian Antarctic LIDAR facility

Austria Declares Intent To Join ESO

Auto-multifiber coupler design for multi-object spectroscopy at the Beijing Astronomical Observatory.