Observation of combination bands involving intermolecular vibrations of CO 2 -, N 2 - and OCS-N 2 O complexes using an external cavity quantum cascade.

Slides:



Advertisements
Similar presentations
1 THz vibration-rotation-tunneling (VRT) spectroscopy of the water (D 2 O) 3 trimer : --- the 2.94THz torsional band L. K. Takahashi, W. Lin, E. Lee, F.
Advertisements

Direct Frequency Comb Spectroscopy for the Study of Molecular Dynamics in the Infrared Fingerprint Region Adam J. Fleisher, Bryce Bjork, Kevin C. Cossel,
COMBINATION BANDS OF THE NONPOLAR N 2 O DIMER AND INFRARED SPECTRA OF (C 2 D 4 ) 2 AND (C 2 D 4 ) 3 USING A QUANTUM CASCADE LASER Mojtaba Rezaei, N. Moazzen-Ahmadi.
Development of an External Cavity Quantum Cascade Laser for High- Resolution Spectroscopy of Molecular Ions JACOB T. STEWART, BRADLEY M. GIBSON, BENJAMIN.
Sub-Doppler Resolution Spectroscopy of the fundamental band of HCl with an Optical Frequency Comb ○ K. Iwakuni, M. Abe, and H. Sasada Department of Physics,
Spectra, Structures, and Dynamics of Weakly Bound Clusters from Dimers to Nonamers Wolfgang Jäger Department of Chemistry, University of Alberta.
Rotationally-resolved infrared spectroscopy of the polycyclic aromatic hydrocarbon pyrene (C 16 H 10 ) using a quantum cascade laser- based cavity ringdown.
The high resolution spectrum of the Ar  C 2 H 2 complex C. Lauzin, a K. Didriche, a M. Herman, a and L. H. Coudert b a Université Libre de Brxuxelles,
Helium Nanodroplet Isolation Spectroscopy of NO 2 and van der Waals Complexes Robert Fehnel Kevin Lehmann Department of Chemistry University of Virginia.
Infrared spectra of OCS-C 6 H 6, OCS-C 6 H 6 -He and OCS-C 6 H 6 -Ne van der Waals Complexes M. Dehghany, J. Norooz Oliaee, Mahin Afshari, N. Moazzen-Ahmadi.
The Search is Over: Design and Applications of a Chirped Pulse Fourier Transform Microwave (CP- FTMW) Spectrometer for Ground State Rotational Spectroscopy.
Simulating the spectrum of the water dimer in the far infrared and visible Ross E. A. Kelly, Matt J. Barber, Jonathan Tennyson Department of Physics and.
HIGH RESOLUTION INFRARED SPECTROSCOPY OF N 2 O-C 4 H 2 AND CS 2 −C 2 D 2 DIMERS MAHDI YOUSEFI S. SHEYBANI-DELOUI JALAL NOROOZ OLIAEE BOB MCKELLAR NASSER.
Phase noise measurements in TRIUMF ISAC 2 cryomodule K. Fong, M. Laverty TRIUMF.
High resolution studies of the 3 band of methyl fluoride in solid para-H 2 using a quantum cascade laser A.R.W. McKellar *, Asao Mizoguchi, Hideto Kanamori.
Infrared Spectroscopy using Quantum Cascade Lasers Peng Wang and Tom Tague Bruker Optics, Billerica, MA Laurent Diehl, Christian Pflügl and Federico.
Supersonic Free-jet Quantum Cascade Laser Measurements of 4 for CF 3 35 Cl and CF 3 37 Cl and FTS Measurements from 450 to 1260 cm -1 June 20, 2008 James.
The inversion motion in the Ne – NH 3 van der Waals dimer studied via microwave spectroscopy Laura E. Downie, Julie M. Michaud and Wolfgang Jäger Department.
Infrared spectra of complexes containing acetylene-d2 Clément Lauzin, J. Norooz Oliaee, N. Moazzen-Ahmadi Department of Physics and Astronomy University.
Sub-Doppler Spectroscopy of Molecular Ions in the Mid-IR James N. Hodges, Kyle N. Crabtree, & Benjamin J. McCall WI06 – June 20, 2012 University of Illinois.
Fukuoka Univ. A. Nishiyama, A. Matsuba, M. Misono Doppler-Free Two-Photon Absorption Spectroscopy of Naphthalene Assisted by an Optical Frequency Comb.
High-Resolution Spectroscopy of the ν 8 Band of Methylene Bromide Using a Quantum Cascade Laser-Based Cavity Ringdown Spectrometer Jacob T. Stewart and.
1 Ab initio and Infrared Studies of Carbon Dioxide Containing Complex Zheng Su and Yunjie Xu Department of Chemistry, University of Alberta, Edmonton,
Spectroscopy of He-, Ne-, and Ar - C 2 D 2 complexes Mojtaba Rezaei, Nasser Moazzen-Ahmadi Department of Physics and Astronomy University of Calgary A.R.W.
STRUCTURES OF TWO ISOMERS OF NITROUS OXIDE TETRAMER FROM THEIR INFRARED SPECTRA J. Norooz Oliaee, F. Mivehvar, M. Dehghany, N. Moazzen-Ahmadi Department.
Conformation specific spectroscopy of jet- cooled 4-phenyl-1-butene Joshua A. Sebree, Josh J. Newby, Nathan R. Pillsbury, Timothy Zwier Department of Chemistry,
ULTRAHIGH-RESOLUTION SPECTROSCOPY OF DIBENZOFURAN S 1 ←S 0 TRANSITION SHUNJI KASAHARA 1, Michiru Yamawaki 1, and Masaaki Baba 2 1) Molecular Photoscience.
Fundamentals and Torsional Combination Bands of Two Isomers of the OCS-CO 2 Complex J. Norooz Oliaee, M. Dehghany, F. Mivehvar, Mahin Afshari, N. Moazzen-Ahmadi.
Rotationally-Resolved Spectroscopy of the Bending Modes of Deuterated Water Dimer JACOB T. STEWART AND BENJAMIN J. MCCALL DEPARTMENT OF CHEMISTRY, UNIVERSITY.
IR spectra of Methanol Clusters (CH3OH)n Studied by IR Depletion and VUV Ionization Technique with TOF Mass Spectrometer Department of Applied Chemistry.
High Resolution Microwave Spectra of He N – and (H 2 ) N – Linear Molecule Clusters Wolfgang Jäger Department of Chemistry, University of Alberta, Edmonton,
Rotationally-Resolved Infrared Spectroscopy of the ν 16 Band of 1,3,5- Trioxane Bradley M. Gibson, Nicole C. Koeppen Department of Chemistry, University.
FREQUENCY-AGILE DIFFERENTIAL CAVITY RING-DOWN SPECTROSCOPY
Chuanxi Duan (段传喜) Central China Normal University Wuhan, China
Tokyo Institute of Technology Hiroyuki Kawasaki, Asao Mizoguchi, Hideto Kanamori High Resolution Infrared Spectroscopy of CH 3 F-(ortho-H 2 ) n cluster.
Infrared spectroscopy of two isomers of the OCS-CS 2 complex J. Norooz Oliaee, M. Dehghany, Mahin Afshari, N. Moazzen-Ahmadi Department of Physics and.
Progress in Understanding the Infrared Spectra of He- and Ne-C 2 D 2 Nasser Moazzen-Ahmadi Department of Physics and Astronomy University of Calgary A.R.W.
Cavity-Enhanced Direct Frequency Comb Velocity Modulation Spectroscopy Laura Sinclair William Ames, Tyler Coffey, Kevin Cossel Jun Ye and Eric Cornell.
Development of a cavity ringdown spectrometer for measuring electronic states of Be clusters JACOB STEWART, MICHAEL SULLIVAN, MICHAEL HEAVEN DEPARTMENT.
The Influence of Free-Running FP- QCL Frequency Jitter on Cavity Ringdown Spectroscopy of C 60 Brian E. Brumfield* Jacob T. Stewart* Matt D. Escarra**
Intermolecular Interactions between Formaldehyde and Dimethyl Ether and between Formaldehyde and Dimethyl Sulfide in the Complex, Investigated by Fourier.
Gas Phase Infrared Spectroscopy of Protonated Species Department of Chemistry University of Georgia Athens Georgia,
Carbon dioxide clusters: (CO 2 ) 6 to (CO 2 ) 13 J. Norooz Oliaee, M. Dehghany, N. Moazzen-Ahmadi Department of Physics and Astronomy University of Calgary.
Champaign, June 2015 Samir Kassi, Johannes Burkart Laboratoire Interdisciplinaire de Physique, Université Grenoble 1, UMR CNRS 5588, Grenoble F-38041,
The Cyclic CO 2 Trimer: Observation of two parallel bands and determination of intermolecular out-of-plane torsional frequencies Steacie Institute for.
Infrared--Microwave Double Resonance Spectroscopy of Ar-DF (v = 0,1,2) Justin L. Neill, Gordon G. Brown, and Brooks H. Pate University of Virginia Department.
M. Dehghany, M. Afshari, J. N. Oliaee, N. Moazzen-Ahmadi Department of Physics & Astronomy, University of Calgary, Canada A. R. W. MCKELLAR Steacie Institute.
Superfluid effects in para-H 2 clusters probed by CO 2 rotation-vibration transitions Hui Li, Robert J. LeRoy, Pierre-Nicolas Roy Department of Chemistry.
High-resolution mid-infrared spectroscopy of deuterated water clusters using a quantum cascade laser- based cavity ringdown spectrometer Jacob T. Stewart.
Yu-Shu Lin, Cheng-Chung Chen, and Bor-Chen Chang Department of Chemistry National Central University Chung-Li 32001, Taiwan ~ ~ Electronic Spectroscopy.
SESAPS Terahertz Rotational Spectrum of the v5/2v9 Dyad of Nitric Acid * Paul Helminger, a Douglas T. Petkie, b Ivan Medvedev, b and Frank C. De.
Development of a Fast Ion Beam Spectrometer for Molecular Ion Spectroscopy Departments of Chemistry and Astronomy University of Illinois at Urbana-Champaign.
S. Sheybani-Deloui, J. Norooz Oliaee, M. Rezaei, N. Moazzen- Ahmadi Department of Physics and Astronomy University of Calgary A.R.W. Mckellar Steacie Institute.
K.-X. AuYong, J.M. King, A.R.W. McKellar, & J.K.G. Watson
Jet-cooled infrared laser spectroscopy in the umbrella 2 vibration region of NH3: improving the potential energy surface model of the NH3-Ar van der Waals.
Rovibrational spectrum of the Ar-NO complex in 5.3 μm region
Mid-IR Direct Absorption/Dispersion Spectroscopy of a Fast Ion Beam
CO2 dimer: Five intermolecular vibrations observed via infrared combination bands Jalal Norooz Oliaee, Mehdi Dehghany, Mojtaba Rezaei, Nasser Moazzen-Ahmadi.
Infrared spectrum of CO – O2 a new weakly bound complex
Jacob T. Stewart Department of Chemistry, Connecticut College
A.J. Barclay, S. Sheybani-Deloui, N. Moazzen-Ahmadi
Jacob T. Stewart and Bradley M
High-Resolution Spectroscopy of the ν16 Band of 1,3,5-Trioxane
M. Rezaei, J. George, L. Welbanks, and N. Moazzen-Ahmadi
Mahin Afshari, M. Dehghany, Jalal N. Oliaee, N. Moazzen-Ahmadi
(Kobe Univ. ) Takumi Nakano, Ryo Yamamoto, Shunji Kasahara
Strange combination band of the cross-shaped complex CO2 – CS2
OBSERVATION OF LEVEL-SPECIFIC PREDISSOCIATION RATES IN S1 ACETYLENE
SPECTRA OF C6H6-Rgn (n=1,2) IN THE 3 MIRCON INFRARED BAND SYSTEM OF BENZENE A. J. BARCLAY, A.R.W. McKELLAR, N. MOAZZEN-AHMADI.
Chuanxi Duan (段传喜) Central China Normal University Wuhan, China
Presentation transcript:

Observation of combination bands involving intermolecular vibrations of CO 2 -, N 2 - and OCS-N 2 O complexes using an external cavity quantum cascade laser M. Rezaei, S. Sheybani-Deloui, N. Moazzen-Ahmadi Department of Physics and Astronomy, University of Calgary A.R.W. McKellar National Research Council of Canada

External Cavity design Linewidth: 45 MHz Power: mW Full tuning range: cm -1 Mode Hop Free range: cm -1

No need for cryogenic cooling High power ( mW) Better reproducibility Wide tuning range (~100 cm -1 ) Mechanically tuned by PZT attached to grating Prone to mechanical noise Wavenumber agility is less than that of a diode laser. Higher 1/f noise

Jet Trigger 12 bit DAQ Card Timer Controller Card (CTRO5) DAQ Trigger Gas Supply Jet Signal IR Detectors Etalon QCL PZT Controller Function Generator Valve Controller (Iota One) Ref. Gas Pump Frequency Locking Box Supersonic Expansion Nozzle

Time sequence for data acquisition (QCL)

reference gas signal boxcar gates Reference gas cell Sweep stabilization using 2-channel boxcar 2-channel boxcar integrator SR250 ab PZT controller output(b  a) oscilloscope De Piante, Campbell, & Buelow, Rev. Sci. Instr. 60, 858 (1989) TTL  Function generator

Averaged spectrum Jet signal (subtracted background) Reference gas signal Etalon signal Averaged jet signal

Current etalon signal Current etalon signal Comparing peaks Averager/Shifter Reference etalon signal shift Werle, et al., Spectrochimica Acta Part A 60 (2004) 1685–1705

Jitter suppression off Jitter suppression on Enhanced resolution!

T-shaped structure for N 2 -N 2 O dimer Howard et al., Faraday Discuss. Chem. SOC., 86 ( 1988), 21. Slipped parallel structure for CO 2 -N 2 O dimer Dutton et al, J. Phys. Chem., 100 (1996) Two isomers of the OCS-N 2 O complex H.O. Leung et al., 114 (2001) M. Afshari et al., CPL 489 (2010) 30.

Torsional conbination bands for N 2 O-CO 2 M. Afshri et al., JCP 129 (2008) Intermolecular modes do not depend strongly on the intramolecular vibrations in the weakly bound van der Waals complexes.

Resulting intermolecular frequency cm -1 We used the PGopher computer program for assignment, simulation, and fitting of the spectra. (

cm -1

Torsional frequency for isomer b17.11 cm -1 CO 2 -OCS isomer a18.73, cm -1 CO 2 -OCS isomer b 15.9 cm -1 C-type band

T-shaped structure for N 2 -N 2 O dimer Howard et al., Faraday Discuss. Chem. SOC., 86 ( 1988),21 b-type band A potential based on distribute multiple and distributed dispersion model H.O. Leung, JCP 110 (1999) Mw observation of 15 N 2 -N 2 O The 15 N 2 axis and the N 2 O axis make an angle of 13° and 81° with the intermolecular axis, respectively. a/b-type band with a weak a-type component

a/b-type band with a weak b-type component An in-plane intermolecular vibration and definitely not out-of-plane torsion. Intermolecular vibrational frequency of cm -1

 Successful implementation of a CW-EC QCL in our apparatus with  Rapid-scan signal averaging technique  Continuous background subtraction  Laser frequency locking to reduce long term drifts  Post detection signal processing to reduce laser jitters  Observation of combination bands of CO 2 -, OCS- and N 2 -N 2 O (in 1 fundamental region of N 2 O).