OSE Seminar by Dr. R. Jason Jones, OSE Alumni on Dual-comb spectroscopy of laser induced plasmas
Posted: April 17, 2019
Date: Thursday, April 18, 2019
Time: 11:00 AM to Noon
Location: CHTM, Room 101
Map to CHTM:
ADA Accommodations are available. Please send your request via email.
Dr. R. Jason Jones
College of Optical Sciences at the Univ. of Arizona.
Dual-comb spectroscopy has become a powerful spectroscopic technique in applications that rely on its broad spectral coverage combined with high accuracy and high-frequency resolution capabilities. Experiments have primarily focused on high-sensitivity detection and analysis of gas samples under semi-static conditions, with applications ranging from environmental monitoring of greenhouse gases to high-resolution molecular spectroscopy. Here, we utilize its ability for rapid detection of transient phenomena to demonstrate broadband, high-resolution, and time-resolved spectroscopy in laser-induced plasmas. This new spectroscopic approach utilizing fs frequency combs offers the broad spectral coverage found in the powerful techniques of laser-induced breakdown spectroscopy while providing the high-resolution and accuracy of CW laser-based spectroscopies. Approaches for time-resolved dual-comb spectroscopy from the XUV to the MIR will be discussed.
R. Jason Jones is an Associate Professor of Optical Sciences at the University of Arizona. He received his PhD from the University of New Mexico in 2001. He continued on as a research associate at JILA (a joint institute of the University of Colorado and the National Institute of Standards and Technology), where he was supported by a fellowship from the National Research Council and worked in the groups of Jun Ye and John Hall on the continued development of fs frequency combs. In 2005 he demonstrated the up-conversion of frequency combs into the vacuum-ultraviolet for the first time. He continued to work in the research group of Jun Ye as a Senior Research Associate of JILA until July 2006 when he left to join the College of Optical Sciences at the University of Arizona. He currently heads a research group in experimental atomic, molecular, and optical physics. His research interests include high-precision measurements, development and applications of femtosecond frequency combs, high-resolution and ultrasensitive laser spectroscopy, time-resolved dual-comb spectroscopy from the VUV to MIR including laser induced plasma’s, development of novel systems for atomic clocks and frequency standards, extreme nonlinear optics (e.g. high harmonic generation), and ultrafast optics. He is a member of the American Physical Society and the Optical Society of America.