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IEEE Journal of Quantum Electronics

Issue 2  Part 1 • February 1972

 This issue contains several parts.Go to:  Part 2 

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Displaying Results 1 - 17 of 17
  • [Front cover and table of contents]

    Publication Year: 1972, Page(s): 0
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    Freely Available from IEEE
  • A coupled-mode analysis of mode locking in homogeneously broadened lasers

    Publication Year: 1972, Page(s):29 - 33
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1380 KB)

    The coupled-mode equations are solved for homogeneously broadened lasers modulated near the axial mode separation frequency. The character of the oscillations changes rapidly when the modulation period is tuned through the round-trip delay at the group velocity. Specifically, this is the region in which phase modulation leads to pulsing and loss modulation leads to pulsing at normal power. The pre... View full abstract»

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  • An investigation of gases for Stark modulating the CO2laser

    Publication Year: 1972, Page(s):34 - 38
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1415 KB)

    A number of gases are reported that extend the range of CO2laser lines able to be modulated by means of the molecular Stark effect. Data are presented on external modulation of the00deg1-10deg0band in theRbranch by methyl fluoroform and in thePbranch by 1-1 difluoroethane. The gases fluoroethane, mono-methylamine, and methyl mercaptan and the vapors meth... View full abstract»

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  • Spontaneous emission from a driven Doppler line

    Publication Year: 1972, Page(s):38 - 46
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2860 KB)

    A previously developed theory of spontaneous emission from driven systems has been applied to the case of a Doppler broadened gas of two level atoms radiating into free space. The power spectrum of those photons radiated nearly parallel to the propagation vector of the driving field is predicted to differ from that of the undriven system. The case of zero attenuation coefficient (population equali... View full abstract»

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  • A simplified model for predicting gain, saturation, and pulse length for gas dynamic lasers

    Publication Year: 1972, Page(s):46 - 53
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2572 KB)

    A single time-scale model is developed to describe the 10.6-μ laser energy extraction from an initially inverted N2-CO2catalyst mixture where the energy is stored primarily in the N2vibration. This condition is typical of high-pressure gas dynamic lasers, but the methods are general and applicable to other systems. In the absence of external pumping, the nitro... View full abstract»

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  • Effects of laser mode structure on damage in quartz

    Publication Year: 1972, Page(s):54 - 57
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1726 KB)

    Observations are reported of the differences in the damage properties of crystalline quartz for ruby laser pulses having different mode structures. The damage threshold values for the multimode laser are found to depend on the propagation and polarization directions of the incident laser pulse. The threshold values for the TEM00laser are independent of propagation and polarization direc... View full abstract»

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  • Performance of high-voltage axially pulsed CO2lasers

    Publication Year: 1972, Page(s):58 - 65
    Cited by:  Papers (12)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2011 KB)

    A parametric investigation of high-voltage axially pulsed CO2lasers was performed. The parametric variables were tube diameter, discharge voltage, discharge capacitance, and gas mixture. The output energy per unit discharge length increased linearly with tube diameter for laser bores greater than 5 cm. Volumetric scaling was obtained with 2.5-cm and 5-cm bore lasers. A maximum energy de... View full abstract»

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  • Second-order dispersion in oscillating GaAs junction lasers

    Publication Year: 1972, Page(s):66 - 69
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1489 KB)

    The frequency separation between adjacent longitudinal modes in semiconductor lasers varies from mode to mode over the laser spectrum because of the effects of dispersion in the laser medium. Because of the interest in mode locking and self-pulsing of GaAs lasers it is desirable to know the magnitude of this effect. We have measured this variation of mode separation by measuring the correlation fu... View full abstract»

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  • The time behavior and spectra of relaxation oscillations in a high-gain laser

    Publication Year: 1972, Page(s):69 - 73
    Cited by:  Papers (46)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1642 KB)

    It is found that under appropriate conditions the high-gain 3.51-μ xenon laser may exhibit relaxation oscillations in the frequency range of 1 to 10 MHz. Experimental investigations have been conducted in both the time and frequency domains. Most of the observed features of these fluctuations are in good agreement with theoretical considerations. View full abstract»

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  • Mode configurations in second-order mode-locked lasers

    Publication Year: 1972, Page(s):74 - 79
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1946 KB)

    An analysis of the mode frequencies and phases of lasers that are self-pulsing due to second-order mode locking is presented. It is shown that locking can occur with the modes arranged in several different configurations with different pulsing frequencies corresponding to the beat notes between different combinations of longitudinal modes. The experimental observations of the transition between tw... View full abstract»

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  • Spectral narrowing in high-gain lasers

    Publication Year: 1972, Page(s):80 - 85
    Cited by:  Papers (87)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1768 KB)

    The dependence of spectral narrowing in lasers on the line-broadening mechanism is investigated including the effects of saturation and distributed loss. It is found that in the unsaturated regime the narrowing is essentially independent of the resonance broadening mechanism and the narrowed line approaches a Gaussian. The onset of saturation slows or reverses the narrowing process. Experimental r... View full abstract»

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  • Generation of ultraviolet light using the Nd:YAG laser

    Publication Year: 1972, Page(s):86 - 87
    Cited by:  Papers (10)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    High-power pulses of ultraviolet light of wavelength 266 nm have been produced by frequency doubling the 1064-nm wavelength of Nd:YAG to 532 nm using lithium iodate and frequency doubling this green light to 266 nm by using ammonium dihydrogen phosphate (ADP). A peak power of 310 W at 266 nm was obtained in a single Gaussian transverse mode representing a 54 percent peak conversion of incident 532... View full abstract»

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  • Electrooptic ceramics as wavelength selection devices in dye lasers

    Publication Year: 1972, Page(s):88 - 89
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    The output center wavelength of a rhodamine 6G dye laser was tuned by using variable birefringence filters in the cavity. The electrooptic properties of two different lead lanthanum zirconate titanate (PLZT) ceramics were used in these filters to achieve up to 120 Å of wavelength tuning. Spectral bandwidths varied from 20 to 120 Å with these particular filters. View full abstract»

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  • On the stability of a steady-state π pulse

    Publication Year: 1972, Page(s):89 - 90
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (579 KB)

    It is shown that in the absence of relaxation or inhomogeneous broadening the steady-state π pulse in an amplifier is locally unstable against the introduction of certain amplitude perturbations. View full abstract»

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  • FM-CW radar range measurement with a CO2laser

    Publication Year: 1972, Page(s):91 - 92
    Cited by:  Papers (9)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (770 KB)

    FM-CW radar range measurement by a CO2laser is reported. Nonlinear variation of the laser power output is obtained when the reflected signal is mixed within the laser cavity. This variation is attributed to frequency pulling/pushing and to power-dependent refractive index changes in the laser medium. View full abstract»

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  • The use of light converters to increase the power of flashlamp-pumped dye lasers

    Publication Year: 1972, Page(s):92 - 94
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1043 KB)

    The peak power output of flashlamp-pumped dye-doped polymethylmethacrylate laser rods can be increased through the use of "light converters." This general technique provides a means of increasing the flashlamp pumping efficiency of organic dyes. View full abstract»

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  • [Back cover]

    Publication Year: 1972, 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.

Full Aims & Scope

Meet Our Editors

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