Millimeterwave detected, millimeterwave optical double resonance mmodr spectroscopy is a powerful tool for the analysis of dense, complicated regions in the optical spectra of small molecules. Dopplerfree dualcomb spectroscopy of rb using optical. We present a dopplerfree highresolution dualcomb spectroscopy technique in which a dualcomb system is employed to perform opticaloptical doubleresonance oodr spectroscopy. Bernath, and robert department of chemistry and spectroscopy laboratory, massachusetts institute of technology. Opticaloptical doubleresonance spectroscopy of bao. Spectroscopic assignments of previously assigned lines and previously proposed assignments have been confirmed and new assignments have been made. Dopplerfree dualcomb spectroscopy of rb using opticaloptical double resonance technique article pdf available in optics express 2422.
An introduction to optical spectroscopy by andrew hind. Optical laser spectroscopy and hyperfine structure. Optical double resonance odr and level crossing spectroscopy lc are two closely related highresolution techniques. Journal of molecular spectroscopy 89,5361 1981 opticaloptical doubleresonance spectroscopy of baf. In this work, we report on our full results of the spectroscopic analysis of the quasilinear s2 state of the prototypical halocarbene, chf, and its deuterated isotopomer cdf using opticaloptical double resonance spectroscopy through the s1. And yet, the way in which spectroscopy is usually carried out is severely limited. Two oodr schemes have been used to probe the state. The scheme is demonstrated via dopplerfree optical optical double resonance spectroscopy of rb by modulating the intensity of a pump laser with frequencies set at rates 3 times lower and 50,000 times higher than the difference in the repetition rates of the two frequency combs. Two years later brossel and bitter demonstrated the technique on the resonance line of mercury 2.
Ouantum chemistry by walter kamann, academic press, 1957, chapter 15. Ion cyclotron resonance spectroscopy yields information on many aspects of ionmolecule chemistry. Most of the observed lines are found to be perturbed by a few to a few hundred mhz. Opticaloptical doubleresonance spectroscopy of caf citeseerx. Improved values have been obtained for the rotational constants b and c and for the centrifugal distortion constant.
Millimeterwave optical double resonance schemes for rapid. A probe laser was used to drive transitions from a bound state to a. Predissociation of nak molecules by opticaloptical double. Double resonance 1d photonic crystal cavities for singlemolecule midinfrared photothermal spectroscopy. Other articles where optical double resonance is discussed. The first, excitation spectroscopy, revealed 19 vibronic levels of 1. Zwier research group, purdue university, west lafayette, in.
Pdf optical doubleresonance cooledatom spectroscopy. Double resonance data on 4carvomenthenol, exploring progressive and regressive v and. Two types of optical double resonance experiments were performed on bao. Pdf opticaloptical double resonance spectroscopy of the. In the method known as optical double resonance, optical radiation corresponding to a transition in the atom of interest is passed through the cell.
Opticaloptical double resonance spectroscopy of the d. Optical pumping and doubleresonance techniques springerlink. Principle of xodr the principle of the proposed technique is as follows fig. We have demonstrated microwave optical double resonance spectroscopy of the. Optical double resonance and level crossing spectroscopy. Dopplerlimited absorption and fluorescence spectroscopy with lasers. Selective optical excitation of a molecule out of a heterogeneous complex can be used to produce fingerprints of that particular species in the composite xas spectrum.
Proceedings of the international symposium on molecular spectroscopy, urbana, il, june 1621, 2014. The potential of fourwave mixing spectroscopy for deperturbation studies has been demonstrated by an analysis of the spinorbit and luncoupling interaction between the d 3. Opticaloptical double resonance oodr spectroscopy has been applied to the rotational and vibronic analysis of the thirty nine eigenstates of no existing in. A variety of the double resonance techniques that are utilized in the study of neutral species can also be implemented on our ion spectroscopy instrument. The scheme is demonstrated via dopplerfree opticaloptical doubleresonance spectroscopy of rb by modulating the intensity of a pump laser with frequencies set at rates 3 times lower and 50,000 times higher than the difference in the repetition rates of the two frequency combs. Optical optical double resonance dualcomb spectroscopy with pumpintensity modulation article pdf available in optics express 2725. Double resonance 1d photonic crystal cavities for single. The ns and nd rydberg series were also observed and studied for 22 s n s 33 by andreev et a1 1987 using opticaloptical double resonance and field ionization detection.
Opticaloptical double resonance laser spectroscopy of bao. Perturbation facilitated optical optical double resonance. Opticaloptical doubleresonance spectroscopy of baf. Opticaloptical doubleresonance dualcomb spectroscopy.
Pdf opticaloptical double resonance spectroscopy of. The opticaloptical doubleresonance oodr spectroscopy is also presented for comparison, with the corresponding value of the hyperfine level interval being 2183. Phase dependence of doubleresonance experiments in. The theory of lc is based on the breit formula from 1933 3, but. Internuclear double resonance spectroscopy an overview. The doubleresonance method provides unambiguous assignments of perturbed transitions by intermediate level labeling.
However, photofragmentation is used as the action event indicating absorbance, rather than the ionization and fluorescence detection methods used for neutrals species iruv depletion spectroscopy. Opticaloptical doubleresonance oodr excitation spectroscopy has proved to be a useful technique for the analysis of levels 3. Osa microwave optical double resonance spectroscopy of. The method is ideally suited for experiments involving ion energies below several electron volts, and hence provides a valuable complement to other techniques 27. It determines the physical or chemical properties of the atoms or the molecules in which they are contained. Opticaloptical doubleresonance oodr spectra of caf are recorded, with reduced. We demonstrate that laser cooling, combined with vscheme optical doubleresonance spectroscopy, pro. Double resonance spectroscopy by means of a laser, in laser spectroscopy of atoms and molecules, ed. The threelevel optical bloch equations are discussed in more detail, and simulation results on the autlertownes doublet as well as on the fieldstrength dependence of the rfmw double resonance experiments are given. In our experimental study, dopplerfree highresolution and highfrequencyaccuracy broadband measurements were realized using the proposed oodr dualcomb spectroscopic technique, which does not require highpower. Opticaloptical doubleresonance oodr induced photoluminescence into the lowest excited electronic states of baoa3. If radiofrequency radiation is absorbed by the atoms in either of the levels involved, the intensity, polarization, or direction of the fluorescent light may be.
Doppler broadening, using two cw, singlemode dye lasers. Optical optical double resonance oodr excitation spectroscopy has proved to be a useful technique for the analysis of levels 3. Although opticalmicrowave and opticalrf doubleresonance experiments have been performed for many years now, perhaps the first such experiment to use a. Nuclear magnetic resonance or nmr spectroscopy is a research technique that exploits the magnetic properties of certain atomic nuclei. Historically, spectroscopy originated through the study of visible light dispersed according to its wavelength, by a prism.
Stimulated ramanuv optical double resonance spectroscopy. If the optical field oscillates at a resonance frequency of the molecules, this. We apply an intensitymodulation technique to dualcomb spectroscopy to improve its detection sensitivity. Infrared optical double resonance iodr effects have been observed in nd 2. Mossberg oregon center for optics and department of physics, university of oregon, eugene, oregon 97403 received 15 august 2000.
Opticaloptical doubleresonance dualcomb spectroscopy with pumpintensity modulation. This handbook provides a straightforward introduction to spectroscopy, showing what it can do and how it does it, together with a clear, integrated and objective account of the wealth of information that can be derived from spectra. Later the concept was expanded greatly to include any interaction with radiative energy as a. Introduction optical spectroscopy is the study of the interaction of light with matter.
Since the starting level, marked by the pump, is known, these optical double resonance signals can be more readily assigned than the much more abundant lines. Topics discussed include the spontaneous emission of radiation, stimulatedtransitions and the properties of gas and turnable dye lasers, and the physics and applications of resonance fluorescence, optical double resonance, optical pumping, and atomic beam magnetic resonance experiments. The availability of cavityfree microwave and millimeter wave. Before sharing sensitive information, make sure youre on a federal government site. This new electric field contains a time independent term, terms oscillating at the double frequencies, 2.
Oodr allows the automatic and unambiguous projection of an assignment of a visible wavelength spectrum. Introduction to nonlinear optical spectroscopy eric vauthey. Experimental study on double resonance optical pumping. Odr was suggested by kastler and brossel in 1949 1. Opticaloptical double resonance oodr spectroscopy has been applied to the rotational and vibronic analysis of the thirty nine. The domain of spectroscopy is a large and richly varied one, constituting one of the basic methodologies of physical science. Infrared optical double resonance spectroscopy of nd2.
935 1044 1315 796 519 327 1200 1008 990 473 1320 1108 617 328 711 1007 630 1423 1606 1465 151 1339 1037 836 1367 690 735 220 295 1242