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Spectroscopy and Sensing with Optical Frequency Combs: from DC to Visible

Grant number: 18/26673-5
Support type:Scholarships abroad - Research
Effective date (Start): February 04, 2019
Effective date (End): August 03, 2019
Field of knowledge:Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
Principal researcher:Flavio Caldas da Cruz
Grantee:Flavio Caldas da Cruz
Host: Scott Diddams
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Research place: National Institute of Standards and Technology (NIST), United States  


The main objective of this research plan is the development of so-called optical frequency combs (PFOs) based on fentosecond lasers, covering frequencies ranging from 0 to 600 THz. This huge spectral envelope extends from zero frequency (DC) across the entire far infrared region (also called terahertz, 10 THz) and mid infrared (10 THz -100 THz) to near infrared (100-300 THz) and visible (300-600 THz). The focus will be in the terahertz range, so as to fill the missing gap in the above goal. These PFOs will be used for high bandwidth and high precision spectroscopy of molecular gases, with the possibility of applications in high resolution hyper-spectral imaging.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LIND, ALEXANDER J.; KOWLIGY, ABIJITH; TIMMERS, HENRY; CRUZ, FLAVIO C.; NADER, NIMA; SILFIES, MYLES C.; ALLISON, THOMAS K.; DIDDAMS, SCOTT A. Mid-Infrared Frequency Comb Generation and Spectroscopy with Few-Cycle Pulses and chi((2)) Nonlinear Optics. Physical Review Letters, v. 124, n. 13 APR 1 2020. Web of Science Citations: 0.
NADER, NIMA; KOWLIGY, ABIJITH; CHILES, JEFF; STANTON, ERIC J.; TIMMERS, HENRY; LIND, ALEXANDER J.; CRUZ, FLAVIO C.; LESKO, DANIEL M. B.; BRIGGMAN, KIMBERLY A.; NAM, SAE WOO; DIDDAMS, SCOTT A.; MIRIN, RICHARD P. Infrared frequency comb generation and spectroscopy with suspended silicon nanophotonic waveguides. OPTICA, v. 6, n. 10, p. 1269-1276, OCT 20 2019. Web of Science Citations: 0.
KOWLIGY, ABIJITH S.; TIMMERS, HENRY; LIND, ALEXANDER J.; ELU, UGAITZ; CRUZ, FLAVIO C.; SCHUNEMANN, PETER G.; BIEGERT, JENS; DIDDAMS, SCOTT A. Infrared electric field sampled frequency comb spectroscopy. SCIENCE ADVANCES, v. 5, n. 6 JUN 2019. Web of Science Citations: 9.

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