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...

  • TUNABLE COHERENT RADIATION FROM TERAHERTZ TO MICROWAVE BY MIXING TWO INFRARED FREQUENCIES IN A 47-MM-LONG GaSe CRYSTAL. Wei Shi; Ding, Yujie J. // International Journal of High Speed Electronics & Systems;Jun2006, Vol. 16 Issue 2, p589 

    By mixing two infrared radiations near 1 μm in a 47-mm-long GaSe crystal, we efficiently generated a monochromatic radiation which has frequency tunability from 4.51 THz down to 53 GHz. The highest peak power produced by us is 389 W at 203 μm (1.48 THz), which corresponds to the photon...

  • 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...

  • First-principles studies on infrared properties of semiconducting graphene monoxide. Pu, H. H.; Mattson, E. C.; Rhim, S. H.; Gajdardziksa-Josifovska, M.; Hirschmugl, C. J.; Weinert, M.; Chen, J. H. // Journal of Applied Physics;Oct2013, Vol. 114 Issue 16, p164313 

    Graphene monoxide (GMO), a recently proposed 2D crystalline material in the graphene family, is attractive for next-generation nanoelectronics because of its predicted tunable band gap. As a guide to GMO experimental characterization, we calculate the vibrational properties and obtain three...

  • 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...


Read the Article


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

Try another library?
Sign out of this library

Other Topics