title: Ultrabroadband optical chirp linearization for precision metrology applications.
abstract: We demonstrate precise linearization of ultrabroadband laser frequency chirps via a fiber-based self-heterodyne technique to enable extremely high-resolution, frequency-modulated cw laser-radar (LADAR) and a wide range of other metrology applications. Our frequency chirps cover bandwidths up to nearly 5 THz with frequency errors as low as 170 kHz, relative to linearity. We show that this performance enables 31-mum transform-limited LADAR range resolution (FWHM) and 86 nm range precisions over a 1.5 m range baseline. Much longer range baselines are possible but are limited by atmospheric turbulence and fiber dispersion.
authors: Bridger Photonics, Inc., 2310 University Way, Building 4-4, Bozeman, Montana 59715, USA. roos@bridgerphotonics.com
authors: Peter A
authors: PA
authors: Roos
authors: Randy R
authors: RR
authors: Reibel
authors: Trenton
authors: T
authors: Berg
authors: Brant
authors: B
authors: Kaylor
authors: Zeb W
authors: ZW
authors: Barber
authors: Wm Randall
authors: WR
authors: Babbitt