Brookhaven National Laboratory
P.O. Box 5000
Upton, NY 11973-5000
Phone: (631) 344-4375
FAX: (631) 344-5815
Femtosecond Laser Enhanced FTIR Spectroscopy
We have recently developed an environmentally stabilized cost-effective near IR
femtosecond laser light source, as well as dedicated real-time laser noise
and baseline drift cancellation methods, which can be implemented on many
modern commercial FTIR machines. When this ultrafast laser light source is
coupled with an FT spectrometer (Fig. 1), over one order of magnitude
improvement in sensitivity is obtained (Fig.2), compared to the conventional
setup with the incandescent near IR light source. On top of that, an
additional boost of roughly two orders of magnitude in sensitivity becomes
readily accessible for our well collimated laser light source by
implementing multipass configurations using commercially available multipass
cells. We expect that similar enhanced performance can now be achieved for
many modern FTIR machines in any region from 1100-1700 nm, when a stabilized
fs-laser is employed to generate supercontinua and our baseline noise and
spectral evolution reduction algorithms are applied. Detailed explanation of
this technique will soon be published.
Fig. 1. Schematic of the femtosecond laser-enhanced FTIR spectrometer
Fig. 2. Top graph: The baseline test (in the units of
absorbance) for the conventional near IR light source (red trace) and the
fiber frequency comb source (blue trace). Middle graph: FTIR spectra of the
rotationally resolved second vibrational overtone of CO recorded with the
conventional near IR light source (red trace). Bottom graph: FTIR spectra of
the rotationally resolved second vibrational overtone of CO recorded with
the fiber frequency comb source (blue trace). All spectra were acquired
under similar experimental conditions (single scan, 0.2 cm-1
resolution, 160 Torr of CO, 95 mm gas cell, 40 kHz mirror speed referenced
to the HeNe laser).
Probing interfacial kinetics of water-splitting reactions
with fs-laser enhanced multi-pass ATR FT near-IR technique.
Collaboration with Prof. Michael White, Brookhaven National Lab.
Efforts are underway to develop a near-IR evanescent wave probe based on the
above-mentioned approach and a dedicated monolithic multipass ATR prism. We
expect to achieve up to three orders of magnitude improvement in sensitivity
for this novel approach compared to conventional single pass ATR FT
spectrometers. We are going to employ the resulting fs-laser enhanced
multipass ATR FT near-IR technique for probing hydroperoxide intermediates
participating in water-splitting reactions on liquid/solid interfaces.
High-resolution gas-phase FTIR spectroscopy using stabilized supercontinuum light sources.
Collaboration with Prof. Peter F. Bernath, Old Dominion University.
We are planning to couple our multi-passed
stabilized supercontinuum light source with the high-resolution IFS 125
Bruker FTIR spectrometer to gain access to any region in the 1100-1700 nm
spectral range and to achieve up to six orders of magnitude reduction in the
data acquisition times.
- Ph.D., Emory University, Chemistry Division, Atlanta, GA,
2002-2006, GPA - 4.0
- M.S. Degree, Higher Chemical College of Russian Academy of Sciences,
Moscow, Russia, 1997-2002.
- Visiting scientist: National Institute of Science and Technology,
Boulder, Colorado. Spring 2010. Host: Ian Coddington.
- Visiting researcher: ETH, Zurich, Switzerland. Winter 2004. Host:
- Visiting scholar: Emory University, Atlanta, GA. Summer 2000,
2001-2002. Host: Michael Heaven.
- Research assistant: Kurnakov Institute of General and Inorganic
Chemistry, Moscow, Russia, 1997-2001.
- Goldhaber Fellow, Chemistry Division, Brookhaven National
Laboratory, 2010 - current.
- Research Associate, Chemistry Division, Wayne State University,
Detroit, MI, 2006-2009.
Honors and Awards
- Goldhaber Distinguished Fellowship, Brookhaven National Lab,
- The BNL instrument development start-up grant.
- Invited Speaker at the Gordon Research Conference (Photoions,
Photoionization and Photodetachment, 2006), �Hot Topic� talk: Probing
Actinide Bonding Character with PFI-ZEKE Spectroscopy.
- Osborne R. Quayle Fellowship for excellence in graduate studies,
Chemistry Division, Emory University, 2005.
- Graduated with Honors from the Higher Chemical College of Russian
Academy of Sciences, 2002.
- Moscow Government stipend for outstanding achievements in studying,
- International Soros Science Education Program, Undergraduate
- Third degree diploma in the All-Russia Chemistry Olympiad among high
school students, 1997.
Summary of Past and Current Research
- My PhD research efforts were aimed at probing the nature of actinide
bonding. I�ve built a mass-spectrometer, tailored to the specific needs
of the gas-phase actinide spectrometry and employed the following
spectroscopic tools to study the electronic structure of 5f elements:
Resonantly Enhanced Multi-Photon Ionization (REMPI), Mass-Analyzed
Threshold Ionization (MATI), Fluorescence, and Pulsed Field
Ionization-Zero Kinetic Energy (PFI-ZEKE) techniques.
- During my postdoctoral work, I led two separate research
initiatives. The first project focused on the development of the tandem
mass spectrometer, based on an innovative idea of the coupled
electrostatic ion trap technology, for studies of
non-ergodic dissociation mechanisms in proteins. Additional research
efforts were centered on studying chemical reaction dynamics with
quantum-state resolved velocity-map ion-imaging techniques. The main
focus here was probing new reaction mechanisms outside of the scope of
the conventional transition state theory, such as roaming dynamics in
formaldehyde and acetone molecules.
- I currently hold a Goldhaber Fellow position at the Brookhaven
National Laboratory, where I conduct independent research with emphasis
on the development of innovative spectroscopic tools that utilize fiber
frequency comb technology for interdisciplinary applications pertinent
to the DOE mission.
- Instructor, "CHM 5550: Physical Chemistry Laboratory," Winter 2009.
Wayne State University, Detroit, MI.
- Born December 1979 in Russia.Citizenship: Russia.
- Status in the US: Permanent resident / Green card holder.
- Goncharov, V.; Hall, G., Femtosecond laser enhanced FT-NIR
spectroscopy, manuscript in preparation.
- Goncharov, V.; Lahankar, S.A.; Farnum, J.D.; Bowman, J.M.;
Suits, A.G. Roaming dynamics in formaldehyde-d2
dissociation, Journal of Physical Chemistry A (2009), 113(52),
- Goncharov, Vasiliy; Herath, Nuradhika; Arregui, Andres;
Banares, Luis; Suits, Arthur G. Masked velocity map imaging: A
one-laser-beam doppler-free spectroscopic technique, Journal of
Physical Chemistry A (2009), 113(16), 3840-3843.
- Lahankar, S.A.; Goncharov, V.; Suits, F.; Farnum, J.D.;
Bowman, J.M.; Suits, A.G. Further aspects of the roaming mechanism in
formaldehyde dissociation, Chemical Physics (2008), 347, 288-299.
- Goncharov, V.; Herath, N.; Suits, A.G. Roaming dynamics in
acetone dissociation, Journal of Physical Chemistry A (2008),
- Tongmei Ma, Timothy C. Steimle, Colan Linton, Vasiliy Goncharov
and Michael C. Heaven; The permanent electric dipole moments and
magnetic g factors of uranium monoxide, Journal of Chemical Physics
(2006), 125(20), 204314/1-204314/11.
- Vasiliy Goncharov and Michael C. Heaven; Probing the
electronic structure of UO+ with high-resolution
photoelectron spectroscopy, Journal of Chemical Physics (2006),
- Vasiliy Goncharov and Michael C. Heaven; Spectroscopy of
the ground and low-lying excited states of ThO+, Journal
of Chemical Physics (2006), 124(6), 064312/1-064312/7.
- Vasiliy Goncharov, Jiande Han, Leonid A. Kaledin, and Michael
C. Heaven; Ionization Energy Measurements and Electronic Spectra for
ThO, Journal of Chemical Physics (2005), 122(20), 204311/1-204311/6.
- Han, Jiande; Goncharov, Vasiliy; Kaledin, Leonid A.;
Komissarov, Anatoly V.; Heaven, Michael C. Electronic spectroscopy
and ionization potential of UO2 in the gas phase. Journal
of Chemical Physics (2004), 120(11), 5155-5163.
- Han, Jiande; Kaledin, Leonid A.; Goncharov, Vasiliy;
Komissarov, Anatoly V.; Heaven, Michael C. Accurate Ionization
Potentials for UO and UO2: A Rigorous Test of Relativistic
Quantum Chemistry Calculations. Journal of the American Chemical
Society (2003), 125(24), 7176-7177.
- Heaven, Michael C.; Komissarov, Anatoly V.; Goncharov, Vasily.
Mechanism and kinetics of iodine dissociation in COIL.
Proceedings of SPIE-The International Society for Optical Engineering
(2002), 4631(Gas and Chemical Lasers and Intense Beam Applications III),
- Goncharov, V. V.; Kotov, V. Yu.; Fedotov, Yu. A.;
Yaroslavtsev, A. B. Cation diffusion through ion-exchange membranes.
Zhurnal Neorganicheskoi Khimii (2002), 47(3), 365-369.
- Komissarov, Anatoly V.; Goncharov, Vasily; Heaven, Michael C.
Chemical oxygen-iodine laser (COIL) kinetics and mechanisms.
Proceedings of SPIE-The International Society for Optical Engineering
(2001), 4184(XIII International Symposium on Gas Flow and Chemical
Lasers and High-Power Laser Conference, 2000), 7-12.
- Goncharov, V. V.; Kotov, V. Yu.; Yaroslavtsev, A. B. A
study of the proton-sodium and proton-lithium ion exchange in niobium
oxophosphate trihydrate. Zhurnal Neorganicheskoi Khimii (1999),