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  • Journal article
    CASTILLEJO M, COSTELA A, KASTBERG A, MARANGOS JP, HUTCHINSON MHR, CONNERADE JPet al., 1991,

    QUENCHING BY NOBLE-GASES OF SELECTED ROVIBRONIC LEVELS OF THE A1-PI STATE OF THE CO MOLECULE

    , JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, Vol: 61, Pages: 289-299, ISSN: 1010-6030
  • Journal article
    Boshier MG, Berkeland D, Hinds EA, Sandoghdar Vet al., 1991,

    External-cavity frequency-stabilization of visible and infrared semiconductor lasers for high resolution spectroscopy

    , Optics Communications, Vol: 85, Pages: 355-359, ISSN: 0030-4018

    We have shown that the external cavity stabilization can be a straightforward and powerful technique for converting diode lasers of poor spectral quality into useful tools for high precision laser spectroscopy. The method requires an anti-reflection coating on one facet of the diode laser but, contrary to popular belief, this is not difficult and does not require any specialized equipment. We describe a coating procedure which can be used with standard commercial diode lasers. We have demonstrated the external cavity method using diodes at a variety of visible and infrared wavelengths. Details are given for a visible laser centered at 670 nm. © 1991.

  • Journal article
    REED VC, KNIGHT PL, BURNETT K, 1991,

    SUPPRESSION OF IONIZATION IN SUPERINTENSE FIELDS WITHOUT DICHOTOMY

    , PHYSICAL REVIEW LETTERS, Vol: 67, Pages: 1415-1418, ISSN: 0031-9007
  • Journal article
    MOYACESSA H, BUZEK V, KNIGHT PL, 1991,

    POWER BROADENING AND SHIFTS OF MICROMASER LINESHAPES

    , OPTICS COMMUNICATIONS, Vol: 85, Pages: 267-274, ISSN: 0030-4018
  • Journal article
    BUZEK V, KNIGHT PL, KUDRYAVTSEV IK, 1991,

    3-LEVEL ATOMS IN PHASE-SENSITIVE BROAD-BAND CORRELATED RESERVOIRS

    , PHYSICAL REVIEW A, Vol: 44, Pages: 1931-1947, ISSN: 1050-2947
  • Journal article
    LAI WK, BUZEK V, KNIGHT PL, 1991,

    INTERACTION OF A 3-LEVEL ATOM WITH AN SU(2) COHERENT STATE

    , PHYSICAL REVIEW A, Vol: 44, Pages: 2003-2012, ISSN: 1050-2947
  • Journal article
    BREWCZYK M, FRASINSKI LJ, 1991,

    THOMAS-FERMI-DIRAC MODEL OF NITROGEN MOLECULES IONIZED BY STRONG LASER FIELDS

    , JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, Vol: 24, Pages: L307-L313, ISSN: 0953-4075
  • Journal article
    FRASINSKI LJ, HATHERLY PA, CODLING K, 1991,

    Multiphoton multiple ionisation of N2O probed by three-dimensional covariance mapping

    , Physics Letters A, Vol: 156, Pages: 227-232, ISSN: 0375-9601

    One can attempt to understand the complex dynamics of multiphoton multiple ionisation of triatomic molecules using conventionaltime-of-flight mass spectrometry, but only by applying three-dimensional covariance mapping can processes involving thesimultaneous production of three charged fragments be unequivocally assigned to a specific parent molecular ion.

  • Journal article
    LAI WK, BUZEK V, KNIGHT PL, 1991,

    NONCLASSICAL FIELDS IN A LINEAR DIRECTIONAL COUPLER

    , PHYSICAL REVIEW A, Vol: 43, Pages: 6323-6336, ISSN: 1050-2947
  • Journal article
    RAJ VC, PATEL RB, 1991,

    RESPONSE OF SUMMER COWPEA TO NITROGEN, PHOSPHORUS AND RHIZOBIUM INOCULATION

    , INDIAN JOURNAL OF AGRONOMY, Vol: 36, Pages: 285-286, ISSN: 0537-197X
  • Journal article
    PHOENIX SJD, KNIGHT PL, 1991,

    COLLAPSE AND REVIVAL OF THE STATE-VECTOR IN THE JAYNES-CUMMINGS MODEL - AN EXAMPLE OF STATE PREPARATION BY A QUANTUM APPARATUS - COMMENT

    , PHYSICAL REVIEW LETTERS, Vol: 66, Pages: 2833-2833, ISSN: 0031-9007
  • Journal article
    CREASEY JC, LAMBERT IR, TUCKETT RP, CODLING K, FRASINSKI LJ, HATHERLY PA, STANKIEWICZ Met al., 1991,

    FRAGMENTATION OF VALENCE ELECTRONIC STATES OF SF6(+) STUDIED WITH SYNCHROTRON RADIATION

    , JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, Vol: 87, Pages: 1287-1292, ISSN: 0956-5000
  • Journal article
    FAROOQI SM, CONNERADE JP, GREENE CH, MARANGOS J, HUTCHINSON MHR, SHEN Net al., 1991,

    LASER-BASED VUV SPECTROSCOPY OF DOUBLY EXCITED CA-I

    , JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, Vol: 24, Pages: L179-L184, ISSN: 0953-4075
  • Journal article
    EKERT AK, KNIGHT PL, 1991,

    RELATIONSHIP BETWEEN SEMICLASSICAL AND QUANTUM-MECHANICAL INPUT-OUTPUT THEORIES OF OPTICAL-RESPONSE

    , PHYSICAL REVIEW A, Vol: 43, Pages: 3934-3938, ISSN: 1050-2947
  • Journal article
    NEW GHC, WOOD D, 1991,

    DYNAMICS OF GAIN-SWITCHED AND MODE-LOCKED SEMICONDUCTOR-LASERS

    , JOURNAL OF MODERN OPTICS, Vol: 38, Pages: 785-799, ISSN: 0950-0340
  • Journal article
    HILL KE, NEW GHC, BURNETT K, 1991,

    COHERENT PULSE-PROPAGATION IN A KRF AMPLIFIER

    , JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, Vol: 8, Pages: 839-848, ISSN: 0740-3224
  • Journal article
    CODLING K, FRASINSKI LJ, HATHERLY PA, STANKIEWICZ M, LARKINS FPet al., 1991,

    THE DOUBLE PHOTOIONIZATION FRAGMENTATION OF CF4 IN THE THRESHOLD REGION (35-80 EV)

    , JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, Vol: 24, Pages: 951-961, ISSN: 0953-4075
  • Journal article
    BUZEK V, KNIGHT PL, 1991,

    THE ORIGIN OF SQUEEZING IN A SUPERPOSITION OF COHERENT STATES

    , OPTICS COMMUNICATIONS, Vol: 81, Pages: 331-336, ISSN: 0030-4018
  • Journal article
    BURNETT K, KNIGHT PL, PIRAUX BRM, REED VCet al., 1991,

    SUPPRESSION OF IONIZATION IN STRONG LASER FIELDS

    , PHYSICAL REVIEW LETTERS, Vol: 66, Pages: 301-304, ISSN: 0031-9007
  • Journal article
    Cho D, Sangster K, Hinds EA, 1991,

    Search for time-reversal-symmetry violation in thallium fluoride using a jet source

    , Physical Review A, Vol: 44, Pages: 2783-2799, ISSN: 1050-2947

    We have looked for a violation of time-reversal symmetry (T) in the molecule thallium fluoride using a rotationally cold beam from a jet source. Our method was to search for a frequency shift of the thallium nuclear magnetic resonance when an external electric field of 29.5 kV/cm was reversed with respect to a magnetic quantization axis. The measured shift, (1.42.4)×10-4 Hz, was interpreted as a null result and constitutes a tenfold improvement in sensitivity over the previous measurement. Accordingly, our measurement has reduced the upper limits on the proton and electron electric dipole moments and on other T-violating weak couplings that can be deduced from the frequency shift. © 1991 The American Physical Society.

  • Journal article
    Hinds EA, Sandoghdar V, 1991,

    Cavity QED level shifts of simple atoms

    , Physical Review A, ISSN: 1050-2947
  • Book chapter
    Krainov VP, Delone NB, Goreslavskii SP, Ivanov MYet al., 1991,

    Semiclassical dipole matrix elements of atomic transitions

    , Intense laser phenomena and related subjects, Editors: Kiyan, Ivanov, Publisher: World Scientific Pub Co Inc, ISBN: 9789810203412
  • Book
    Kiyan IY, Ivanov MY, 1991,

    Intense laser phenomena and related subjects

    , Publisher: World Scientific Pub Co Inc, ISBN: 9789810203412
  • Journal article
    DUBROVSKY Y, IVANOV M, FEDOROV M, 1991,

    RESONANT EXCITATION AND STABILIZATION OF RYDBERG ATOMIC LEVELS IN MULTIPHOTON IONIZATION IN A STRONG LASER FIELD

    , ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI, Vol: 99, Pages: 411-428, ISSN: 0044-4510

    Resonant ionization of atoms in two fields - exciting (weak) and ionizing (strong), is considered under resonant conditions in the region of the Rydberg levels whose spectrum is restructured under the action of a strong ionizing field. The photoelectron energy spectrum and dispersion dependence of the ionization rate on the frequency of the exciting field are found. It is shown that under certain conditions the functions may have narrow minima in the vicinity of the electron energy and energy and exciting field frequency corresponding to the resonances on the quasi-energy atomic levels. The nature of the effect is elucidated and it is shown that it is due to interference between the direct resonant and cascade ionization processes. On this basis a physical interpretation of the stabilization of multiphoton ionization of atoms in the ground state located in a very strong laser field is presented. The case of short laser pulses with a smooth envelope and the specific features of the excitation and interference stabilization of the Rydberg levels which thus arise are considered.

  • Journal article
    AMMOSOV M, DELONE N, IVANOV M, BONDAR I, MASALOV Aet al., 1991,

    CROSS-SECTIONS OF DIRECT MULTIPHOTON IONIZATION OF ATOMS

    , ADVANCES IN ATOMIC MOLECULAR AND OPTICAL PHYSICS, Vol: 29, Pages: 33-111, ISSN: 0065-2199
  • Book chapter
    Delone NB, Ivanov MY, Nefedov AL, 1991,

    The Stark atom

    , Multiphoton Processes, Editors: Mainfray, Agostini, Publisher: Saclay
  • Journal article
    THOMPSON RC, 1991,

    CONCLUDING REMARKS

    , PHYSICA SCRIPTA, Vol: T34, Pages: 108-109, ISSN: 0281-1847
  • Book chapter
    Codling K, Frasinski LJ, 1991,

    Single Photon and Multiphoton Ionisation of Small Molecules Probed by Triple Coincidence Techniques

    , Today and Tomorrow in Photoionisation, Editors: Amusia, West, Publisher: SERC Daresbury Laboratory, Pages: 72-77
  • Journal article
    PATEL NM, PATEL RB, PATEL KK, 1991,

    RESPONSE OF WHEAT (TRITICUM-AESTIVUM) VARIETIES TO NITROGEN AND PHOSPHORUS

    , INDIAN JOURNAL OF AGRONOMY, Vol: 36, Pages: 255-256, ISSN: 0537-197X
  • Book chapter
    Federov MV, Ivanov MY, Lerner PB, 1991,

    Interaction of atoms with supershort laser pulses and supercontinuum generation

    , Intense laser phenomena and related subjects, Editors: Kiyan, Ivanov, Publisher: World Scientific Pub Co Inc, ISBN: 9789810203412

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