Saturation behavior in degenerate four-wave mixing with nonmonochromatic, non-Lorentzian fields

Tang, Y.; Reid, S. A.
November 1996
Journal of Chemical Physics;11/15/1996, Vol. 105 Issue 19, p8481
Academic Journal
We report experimental studies of the degenerate four-wave mixing (DFWM) response in weak field (no saturation) and strong field (saturation) regimes for the case of nonmonochromatic, non-Lorentzian fields. The saturation behavior of line-center intensities and linewidths of rovibrational transitions in the ν3/ν2+ν4+ν5 Fermi dyad region of jet-cooled C2H2 are in good agreement with nondegenerate two-level saturation models, suggesting that the on-resonance DFWM response is weakly dependent on laser line shape. We find that DFWM line shapes in the weak field regime are determined by the infrared power spectrum and cubic intensity dependence, as illustrated using broadband (0.35 cm-1) and narrowband (0.04 cm-1) infrared radiation. The saturation intensity (I0sat) is observed to decrease with decreasing bandwidth, in qualitative agreement with theoretical predictions. © 1996 American Institute of Physics.


Related Articles

  • Dual Lidar Observations at 10.6 μm and 532 nm for Retrieving Semitransparent Cirrus Cloud Properties. Chiriaco, M.; Chepfer, H.; Noel, V.; Haeffelin, M.; Drobinski, P. // Journal of Applied Meteorology & Climatology;Apr2006, Vol. 45 Issue 4, p537 

    To improve the estimation of the infrared radiances in cirrus clouds, one needs to consider the vertical inhomogeneities of the cloud properties. The position of the maximum of absorption within an ice cloud is potentially important to the improvement of the split-window techniques for...

  • in·fra·red.  // American Heritage Student Science Dictionary;2009, p181 

    The entry provides information on infrared. It refers to the invisible part of the electromagnetic spectrum with wavelengths longer than those of visible red light but shorter than those of microwaves. INSET: infrared.

  • The 2011 World Market Forecasts for Imported Ultraviolet or Infrared Ray Apparatus. Parker, Philip M. // World Trade Reports - Imports;1/ 5/2010, pN.PAG 

    Several charts on 2011 world market forecasts for imported ultraviolet or infrared ray apparatus for countries including Cyprus, Sweden and Finland are presented.

  • ELECTROMAGNETIC SPECTRUM.  // Science World;3/25/2013, Vol. 69 Issue 10, following p24 

    The article offers information on the seven kinds of radiation on the electromagnetic spectrum including radio waves, infrared radiation, and visible light.

  • DETECTION OF TSUNAMI RADIATION AT ILLAPEL, CHILE ON 2015-9-16 BY REMOTE SENSING. Lin, Frank C.; Sookhanaphibarn, Kingkarn; Choensawat, Worawat; Pararas-Carayannis, George // Science of Tsunami Hazards;2016, Vol. 35 Issue 1, p1 

    We have detected the Tsunami Radiation generated by the 8.3 magnitude seaquake at Illapel, Chile on 2015-9-16 at the following wavelengths: 3.9 μm, 6.5 μm, 10.7 μm, and 13.3 μm. No radiation is detected at 0.63 μm, which is in the visible spectrum. The Tsunami Signals that we have...

  • Multiple Element Infrared Synchrotron Mirrors. Frogley, Mark; Cinque, Gianfelice // AIP Conference Proceedings;2/3/2010, Vol. 1214 Issue 1, p29 

    Multiple element focussing mirrors are simulated, with a novel design to correct for the spatially extended source in bending magnet infrared beamlines with large acceptance apertures. The calculated enhancement of the effective source brightness is a factor of 4.6 at λ = 2 μm, 2.5 at λ...

  • Determination of the CO3- bond strength via the resonant two-photon photodissociation threshold: Electronic and vibrational spectroscopy of CO3-·Arn. Bopp, Joseph C.; Diken, Eric G.; Headrick, Jeffrey M.; Roscioli, Joseph R.; Johnson, Mark A.; Midey, Anthony J.; Viggiano, A. A. // Journal of Chemical Physics;5/7/2006, Vol. 124 Issue 17, p174302 

    We use a two-laser pump-probe technique coupled with messenger atom tagging to determine the bond energy of O- to CO2 in the CO3- ion, a prevalent species in the upper atmosphere. In this technique, the argon-tagged ion is first electronically excited using a visible laser, then irradiated with...

  • Inferring Convective Weather Characteristics with Geostationary High Spectral Resolution IR Window Measurements: A Look into the Future. Sieglaff, Justin M.; Schmit, Timothy J.; Menzel, W. Paul; Ackerman, Steven A. // Journal of Atmospheric & Oceanic Technology;Aug2009, Vol. 26 Issue 8, p1527 

    A high spectral resolution geostationary sounder can make spectrally detailed measurements of the infrared spectrum at high temporal resolution, which provides unique information about the lower-tropospheric temperature and moisture structure. Within the infrared window region, many spectrally...

  • Giant optical gyrotropy due to electromagnetic coupling. Plum, E.; Fedotov, V. A.; Schwanecke, A. S.; Zheludev, N. I.; Chen, Y. // Applied Physics Letters;5/28/2007, Vol. 90 Issue 22, p223113 

    The authors demonstrate a chiral photonic metamaterial with chirality provided by electromagnetic coupling between mutually twisted unconnected layers. In the visible and near-IR spectral ranges, the material exhibits polarization rotatory power of up to 2500°/mm and shows relatively low...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics