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IEEE Journal of Quantum Electronics

Issue 9 • September 1971

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Displaying Results 1 - 19 of 19
  • [Front cover and table of contents]

    Publication Year: 1971, Page(s): 0
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    Freely Available from IEEE
  • Fluctuations in a parametrically excited subharmonic oscillator

    Publication Year: 1971, Page(s):435 - 440
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (667 KB)

    The behavior of the classical degenerate parametric oscillator (omega_{i} = omega_{s}) with small linear dissipation is considered and an expression for the steady-state probability distribution for the subharmonic amplitude is obtained. The treatment is limited to the case1 ll Q_{p} ll Q_{s}where Qpand Qsare theQfactors at respectively the pu... View full abstract»

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  • Mode-locked dual-polarization operation of a CO2laser

    Publication Year: 1971, Page(s):445 - 450
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (587 KB)

    An electrooptic mode-locking technique for inducing simultaneous oscillation of spacially congruent, orthogonally polarized CO2laser modes is described. During mode-locked dual-polarization operation the frequency separation of the output components is determined by the magnitude of an intracavity birefringence. It can therefore be adjusted to any value consistent with the gain-profile ... View full abstract»

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  • Velocity dependence of the gain of a CO2laser

    Publication Year: 1971, Page(s):459 - 460
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (297 KB)

    Measurements of the small signal gain and saturation intensity of a CO2-N2-He laser are made as a function of gas flow velocity over the range fromsim 0-10m/s. The small signal gain increases and the saturation intensity decreases with increased gas velocity. For intermediate flow velocities with a gas transit time in the laser of a second, the gain also depends on... View full abstract»

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  • CO(v = 2:1) laser transitions from He-air-CH4

    Publication Year: 1971, Page(s):461 - 462
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (342 KB)

    A flowing electrochemically excited liquid-nitrogen-cooled He-air-CH4-(CO) laser was operated inQ-switched fashion yielding 20 CO laser lines below 5.0 μ. These laser lines were measured to occur from 4.7848 to 4.9880 μ. The lines were all identified to result fromP(J)_{upsilon,upsilon'}CO vibrational-rotational transitions as low asupsilon = 2:1 View full abstract»

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  • Active mode locking of a high-pressure pulsed N2O laser

    Publication Year: 1971, Page(s):462 - 463
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (382 KB)

    Experimental results on the active mode locking of a transversely excited N2O laser at subatmospheric pressures are presented. Nanosecond pulses of 10.8-μ radiation were produced with typical peak-power outputs in the 100-kW range. View full abstract»

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  • Higher order intensity correlations of optical pulses

    Publication Year: 1971, Page(s):465 - 467
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (374 KB)

    A simple statistical model of a noisy optical pulse is used to derive concise analytic expressions for the contrast ratios of nonlinear pulsewidth measurements. The results are sufficiently general to be used as an aid in the interpretation of intensity correlation experiments using eitherNth-order multiphoton absorption orNth-order harmonic generation. The amplitude of the s... View full abstract»

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  • Lutetium effects on the UV absorption spectra of Nd:YAG

    Publication Year: 1971, Page(s):467 - 469
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (383 KB)

    Spectroscopic observations were made on Lu:Nd:YAG and Nd:YAG laser materials. Variations in the UV absorption strengths are described and related to the presence of Lu3+. These results indicate that an optimum Lu/Nd ion ratio exists that will yield minimum absorption by the host over the wavelength range0.4-0.24 mum. The reduction in absorption will minimize nonuniform heatin... View full abstract»

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  • A CO2-laser-triggered spark gap

    Publication Year: 1971, Page(s):470 - 471
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (270 KB)

    A coaxial spark gap triggered by a high-pressure CO2laser has been constructed. High-voltage pulses with subnanosecond rise time and very low jitter have been obtained. The observed low-laser energy threshold required to initiate switching suggests an application of the spark gap in controlling and manipulating high-intensity infrared radiation by electrooptic shutters. View full abstract»

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  • The F + H2O chemical laser

    Publication Year: 1971, Page(s):472 - 473
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    Laser oscillation, restricted by energy limitations to transitions from first vibrationallevel to ground state, has been observed from HF produced by the reaction of the F atom on H2O initiated by pulsed electric discharge in flowing mixed F2-H20-He gases at 10 torr. View full abstract»

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  • Continuous dye laser emission from 5220 to 6570 Å

    Publication Year: 1971, Page(s): 473
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (127 KB)

    First Page of the Article
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  • [Back cover]

    Publication Year: 1971, Page(s): 0
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    Freely Available from IEEE
  • Influence of self-induced thermal effects on second-harmonic generation

    Publication Year: 1971, Page(s):469 - 470
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    In optical nonlinear crystals used for second-harmonic generation the presence of absorption at the fundamental wavelength can lead to index of refraction inhomogeneities that reduce the conversion efficiency. View full abstract»

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  • Polarization flip in the far-infrared HCN laser

    Publication Year: 1971, Page(s):457 - 459
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    The 90° polarization flip with hysteresis effect is observed at zero magnetic field in the CW 337-μm HCN laser. The flip disappears when the pressure is increased. In order to obtain the flip, it is necessary that under a constant pressure the input is larger than a threshold input at which the flip appears. View full abstract»

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  • Rotating-waveplate optical-frequency shifting in lithium niobate

    Publication Year: 1971, Page(s):450 - 457
    Cited by:  Papers (30)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1008 KB)

    A rotating-waveplate optical frequency shifter using lithium niobate (LiNbO3) has been constructed and fully evaluated. The experimental modulator frequency shifts the incoming 6328-Å light by 110 MHz, requires 15 W of drive power, and has an inherent 12-MHz bandwidth. The output beam has high spectral purity with very little power in unwanted sidebands and closely matches the TEM<... View full abstract»

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  • Pulsed laser oscillation at 0.7311 µ from F atoms

    Publication Year: 1971, Page(s): 472
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    Fluorine atom laser oscillation has been observed at 0.7311 μ. The line was excited by pulsed electric discharge in mixed helium-fluorine gases at 5 torr and was accompanied by stronger, previously reported fluorine atom lines at 0.7039 and 0.7129 μ. View full abstract»

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  • Laser-controlled switching

    Publication Year: 1971, Page(s): 464
    Cited by:  Papers (17)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    A new type of laser switching is discussed. The laser produces volume ionization in the path of a propagating streamer, increasing its velocity. Subnanosecond jitter is thereby obtained with pressurized gas switches. View full abstract»

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  • Comments on the identification of some xenon ion laser lines

    Publication Year: 1971, Page(s):471 - 472
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    Earlier measurements and level assignments made by the authors for some xenon ion laser lines are reevaluated in light of recent work by Gallardo and coworkers. The lines affected are the 5260.17-, 5260.43-, 4305.75-, and 3759.94-Å lines in xenon and 4647.40- and 4650.22-Å lines attributed to carbon. View full abstract»

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  • Flow lines on the poincaré sphere as an aid to the study of mode polarization in lasers

    Publication Year: 1971, Page(s):441 - 444
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    It is shown that the concept of flow lines on the Poincaré sphere is a useful tool in the study of mode polarization in lasers. As an example, a case from recent literature is analyzed. 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