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IEEE Journal of Quantum Electronics

Issue 5 • May 1975

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Displaying Results 1 - 12 of 12
  • [Front cover and table of contents]

    Publication Year: 1975, Page(s): 0
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    Freely Available from IEEE
  • Controlled timewise redistribution of laser energy

    Publication Year: 1975, Page(s):181 - 185
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (923 KB)

    An electronic feedback circuit is described which has been used in a Nd:glass high-power laser system for converting the spiky light emission into a smooth near-rectangular output of adjustable intensity and duration. The feedback circuit is also capable of converting the laser emission into a stroboscopic output of frequency of several hundreds of kilohertz or into aQ-switched high-int... View full abstract»

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  • High-resolution spectral measurements of SO2from 1176.0 to 1265.8 cm-1using a single PbSe laser with magnetic and current tuning

    Publication Year: 1975, Page(s):205 - 209
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB)

    A single magnetic- and current-tuned PbSe diode laser was used to measure completely resolved spectra of SO2at low pressures over a major portion (1176.0-1265.8 cm-1) of theRbranch of the ν1band for the first time. It is shown that the combination of magnetic and current tuning allows complete coverage of this 89.8-cm-1wide spectral regio... View full abstract»

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  • Stimulated-emission cross section and inversion lifetime in a three-atmosphere iodine photodissociation laser

    Publication Year: 1975, Page(s):215 - 217
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (319 KB)

    An iodine photodissociation laser has been operated at three atmospheres by adding an inert gas to the laser medium. With three atmospheres of helium added a stimulated-emission cross section of2 times 10^{-19}cm2and an inversion half-life of 110 μs was observed. View full abstract»

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  • "Buried modes" in planar media with nonmonotonically varying index of refraction

    Publication Year: 1975, Page(s):217 - 218
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (261 KB)

    When guiding is due to a continuously varying, rather than discontinuous, index of refraction,n(z), andn(z)peaks at some point inside the propagation medium, there may result "buried modes," i.e., modes whose exponential decay takes place inside the guiding medium rather than, as is usual, in an adjacent medium. The conditions for obtaining these modes are discussed in the We... View full abstract»

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  • Contributors

    Publication Year: 1975, Page(s): 0
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    Freely Available from IEEE
  • Fluctuations in mode-locking threshold due to statistics of spontaneous emission

    Publication Year: 1975, Page(s):186 - 190
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    A passively mode-locked Nd:YAG oscillator operating in TEM00mode is investigated theoretically and experimentally. It is shown that a mode-locking threshold well above the normal lasing threshold exists and that this second threshold is of a probabilistic nature. This means that mode locking at a given pump rate in the region of threshold occurs only with a certain probability due to th... View full abstract»

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  • Theory of optical-gain measurements

    Publication Year: 1975, Page(s):190 - 197
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    The widely used technique for determining optical gain and absorption from single-pass, amplified spontaneous emission (ASE) is analyzed with particular attention given to active-volume saturation and three-dimensional effects. The results for homogeneously broadened media show that the population inversion and hence the gain in the active region is diminished by high levels of spontaneous and ASE... View full abstract»

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  • On the saturation effects and start jump of Gaussian modes in oscillators

    Publication Year: 1975, Page(s):198 - 204
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    The present paper deals with the interaction of a Gaussian mode with a homogeneous and an inhomogeneous laser transition. The interaction of the beam with the medium in a laser is treated by taking into account the spatial distribution of both radiation and gain. The intensity characteristics are very different from those obtained for a one-dimensional interaction of a plane wave with a saturating... View full abstract»

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  • On saturation mechanisms in PC He-Cd+lasers

    Publication Year: 1975, Page(s):218 - 220
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The results of experimental studies on the saturation mechanisms in He-Cd laser discharge are presented. It is concluded that the saturation effects may be explained in terms of the influence of the discharge parameters on the helium triplet metastable density. View full abstract»

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  • New CW lines from a submillimeter waveguide laser

    Publication Year: 1975, Page(s):213 - 214
    Cited by:  Papers (43)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    Sixty-one new CW laser lines with wavelengths between 0.1 and 1.5 mm have been observed with a waveguide laser optically pumped by a CO2laser. View full abstract»

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  • Spatial hole burning and oligo-mode distance control in CW dye lasers

    Publication Year: 1975, Page(s):210 - 212
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Spatial hole burning at the position of the dye cell is identified to be responsible for stable double-, triple-, and higher oligo-mode action in a narrow-band CW dye laser. This may be exploited systematically to control the mode distances by arranging the positions of both resonator end mirrors. A total output power up to over 100 mW is obtainable for double- or triple-mode action. Special condi... View full abstract»

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Aims & Scope

The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Prof. Hon Ki Tsang
Chinese University of Hong Kong