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IEEE Journal of Quantum Electronics

Issue 7  Part 1 • July 1975

 This issue contains several parts.Go to:  Part 2 

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Displaying Results 1 - 16 of 16
  • [Front cover and table of contents]

    Publication Year: 1975, Page(s): 0
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    Freely Available from IEEE
  • Influence of contaminants on the CO2electric-discharge laser

    Publication Year: 1975, Page(s):317 - 323
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (701 KB)

    In CO2-N2-He electric-discharge lasers, small concentrations of impurities may be present in the original gases, or new species may be generated by the discharge. In order to determine the effects of such impurities, controlled amounts of possible contaminants were introduced into the amplifier of a CO2probe-amplifier system. Small-signal gain was reduced in all ca... View full abstract»

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  • A theory of forced mode locking

    Publication Year: 1975, Page(s):323 - 330
    Cited by:  Papers (156)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (859 KB)

    Differential equations are derived for forced mode locking of a homogeneously broadened laser in the frequency domain and time domain. Simple methods are presented for the analysis of pulse shapes for other than sinusoidal modulation. The higher order Hermite-Gaussian solutions of the synchronous sinusoidal modulation are shown to be unstable and hence unrealizable in the steady state. View full abstract»

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  • Spectroscopy and laser oscillation properties of lithium neodymium tetraphosphate

    Publication Year: 1975, Page(s):330 - 335
    Cited by:  Papers (63)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (713 KB)

    Optical absorption, fluorescence, and laser characteristics of lithium neodymium tetraphosphate (LiNdP4O12, abbreviated as LNP) were examined. The crystal belongs to the monoclinic system (pseudoorthorhombic system) and the Nd content is 4.37 \times 10^{21} cm-3. The lifetime of the4 ... View full abstract»

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  • The effects of gas additives on TEA CO2lasers

    Publication Year: 1975, Page(s):335 - 340
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (708 KB)

    The effects of the selective addition of the gases H2, CO, O2, NO, NO2, and N2O on the output peak power and stability of a flowing-gas TEA laser operating with a basic mixture of CO2, N2, and He are examined. These additive gases are possible products of reactions which occur in the discharge region of the laser and have considerab... View full abstract»

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  • Pulsed operation of an optically pumped far-infrared molecular laser

    Publication Year: 1975, Page(s):341 - 348
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (826 KB)

    An investigation of the far-infrared (FIR) response of an optically pumped molecular laser to an infrared (IR) pulse source is presented. It is shown that a three-level laser model explains the observed amplitude and delay of FIR output pulses when a reduction factor for participating molecules is included in the model. A discussion of those physical mechanisms that might be responsible for the re... View full abstract»

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  • Effect of rotational and intramode vibrational coupling on short-pulse amplification in CO2

    Publication Year: 1975, Page(s):349 - 357
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (994 KB)

    The extraction of stored energy from a CO2-laser amplifier by a short-duration input pulse is described using a rate-equation theory. The influence of rotational and intramode vibrational energy-transfer processes is studied as a function of the energy density Einand width τpof the input pulse. By a suitable choice of normalized variables δ and ... View full abstract»

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  • The optically gated dye cell - A high-speed shutter and pulse shaper

    Publication Year: 1975, Page(s):358 - 364
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (738 KB)

    This paper discusses characteristics of a class of devices that use a saturable absorber irradiated by an optical control pulse, or gating pulse, to alter the shape of a transmitted optical signal. We consider two device geometries: a longitudinally gated cell, in which signal and gate beams are nearly parallel, and a transverse cell, in which the medium is bleached by a gating pulse applied at ri... View full abstract»

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  • Pulsewidth of the mode-locked, internally frequency-doubled laser

    Publication Year: 1975, Page(s):365 - 367
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The variation in the output pulse duration of a mode-locked internally frequency-doubled (MLFD) laser was experimentally studied. The dependence of pulse duration on second-harmonic conversion rate and modulation index in a Nd:YAG laser is reported. The laser was frequency doubled by a barium sodium niobate crystal located inside the laser cavity and was mode locked by a quartz acousto-optic loss ... View full abstract»

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  • Heating in a CW Nd-pentaphosphate laser

    Publication Year: 1975, Page(s):368 - 370
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (439 KB)

    In a Kr-laser pumped CW Nd-pentaphosphate (NdP5O14) laser, with a threshold of 1.6 mW, an internal quantum efficiency of 63 percent is measured using a novel method. Bistable operation between oscillating and nonoscillating regimes is observed, resulting from the thermal lens created in the pumped zone. If stimulated emission is initially absent, this lensing effect is strong... View full abstract»

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  • Amplification of the 1.32-µm line in Nd:YAG

    Publication Year: 1975, Page(s):371 - 372
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (251 KB)

    Single-pass amplifier gains at 1.32 μm have been measured in an 80-mm Nd:YAG rod, achieving a saturated gain of 3.1. Small-signal gain comparisons imply a stimulated-emission cross-section ratio ( 1.32/1.06 \mu m) of 0.19. View full abstract»

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  • Pumping of red continuous-wave laser dyes

    Publication Year: 1975, Page(s): 372
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (131 KB)

    Two methods of operating red CW dye lasers are examined. A single laser with a mixture of rhodamine 6G and cresyl violet perchlorate (CVP) is compared with a tandem system in which a rhodamine 6G laser is used to pump a CVP laser. At high pumping levels the tandem system is shown to be superior. View full abstract»

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  • 3547-Å pumped high-power dye laser in the blue and violet

    Publication Year: 1975, Page(s):373 - 374
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (275 KB)

    Efficient generation of high-power dye-laser radiation in the blue and violet has been achieved by pumping longitudinally with the third harmonic of a Nd:YAG laser. A peak power as high as 2.4 MW at 4890 Å and peak powers in excess of 1.3 MW from 4300 to 5100 Å have been obtained. View full abstract»

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  • Five-year operation of a He-Ne laser

    Publication Year: 1975, Page(s):374 - 375
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    A metal ceramic He-Ne laser has been operating on lifetest for over five years (> 47 000 h). During this period there has been no appreciable change in either the output power or the voltage-current characteristics of the unit. These results indicate the possibility of extremely long-life He-Ne lasers. View full abstract»

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  • Correction to "Theory of optical gain and threshold properties of semiconductor lasers"

    Publication Year: 1975, Page(s): 375
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (101 KB)

    First Page of the Article
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  • [Back cover]

    Publication Year: 1975, Page(s): 0
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    Freely Available from IEEE

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..

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Meet Our Editors

Editor-in-Chief
Aaron R. Hawkins
Brigham Young University