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Abijith Kowligy (Assoc)

Publications

Fully phase-stabilized 1 GHz turnkey frequency comb at 1.5 μm

Author(s)
Daniel Lesko, Alexander Lind, Nazanin Hoghooghi, Abijith S. Kowligy, Henry R. Timmers, Pooja Sekhar, Benjamin Rudin, Florian Emaury, Gregory B. Rieker, Scott Diddams
Low noise and high repetition rate optical frequency combs have been desirable for many applications from timekeeping to precision spectroscopy. With higher

Nonlinear Silicon waveguides produce tunable frequency combs spanning 2.0-8.5 ?m

Author(s)
Nima Nader, Abijith S. Kowligy, Jeffrey T. Chiles, Eric J. Stanton, Henry R. Timmers, Alexander J. Lind, Kimberly Briggman, Scott Diddams, Flavio Caldas da Cruz, Richard Mirin, Sae Woo Nam, Daniel M. Lesko
We present fully air clad suspended-silicon waveguides for efficient nonlinear interactions limited only by the silicon transparency. Novel fork-shaped couplers

Self-organized nonlinear gratings for ultrafast nanophotonics

Author(s)
Daniel D. Hickstein, David R. Carlson, Haridas Mundoor, Jacob B. Khurgin, Kartik A. Srinivasan, Daron A. Westly, Abijith S. Kowligy, Ivan I. Smalyukh, Scott A. Diddams, Scott B. Papp
We present the first demonstration of automatically quasi-phase-matched second-harmonic generation using femtosecond pulses. The high-confinement geometry of

Octave-spanning dual frequency comb spectroscopy in the molecular fingerprint region

Author(s)
Henry R. Timmers, Abijith S. Kowligy, Alexander J. Lind, Flavio Caldas da Cruz, Nima Nader, Myles C. Silfies, Thomas K. Allison, Gabriel G. Ycas, Peter G. Schunemann, Scott B. Papp, Scott A. Diddams
Spectroscopy in the molecular fingerprint spectral region (6.5-20 $\mu$m) yields critical information on material structure for physical, chemical and
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Patents (2018-Present)

METHODS AND APPARATUS FOR GENERATING MID-INFRARED FREQUENCY COMBS

NIST Inventors
Scott Diddams , Scott Papp , Abijith Kowligy and Alexander Lind
patent description We present a new approach to generating a coherent comb of infrared frequencies utilizing intra­ pulse difference frequency generation. The central claims of this invention are: A simple technique to generate few-cycle pulses derived from an amplified Er:fiber mode­ locked laser
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Created August 27, 2019, Updated December 9, 2022