Is one-way modal conversion sufficient for optical isolation

Is that really your Strehl ratio?

Is the analysis of the observational data from the Viking-1 and -2 space vehicles on the optical characteristics of the Mars atmosphere reliable?

Is The Galactic Center Missing A Stellar Cusp?

Is the phase of plane waves a frame-independent quantity?

Is the ultra-fast transformation of bismuth non-thermal?

Is there a linewidth theory for semiconductor lasers?

Is there RFI in pulsed optical SETI?

Is UV laser induced fluorescence a method to monitor tropospheric OH

Isaac Newton and the astronomical refraction

ISIS IR: The first infrared fibre-fed spectrograph: For near infrared astronomy

ISIS-1 the Infrared and Submillimeter Interferometry Spacecraft: a Precursor Mission Concept

ISO, unique explorer of the invisible cool universe

ISOCAM - A camera for the ISO satellite optical bench development

Isokinetic patch measurements on the edge of the Moon

Isolating Diffraction Signatures in New Horizons Multi-tone Radio Occultation Data and Resolving Their Related Structures at Pluto

ISOON: The Improved Solar Observing Optical Network

Isoplanatic angle and optimal guide star separation for multiconjugate adaptive optics

Isotropic and non-diffracting optical metamaterials

Isotropic photonic band gap and anisotropic structures in transmission spectra of two-dimensional 5-fold and 8-fold symmetric quasiperiodic photonic crystals