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IEEE Journal of Quantum Electronics

Issue 8 • August 1982

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Displaying Results 1 - 25 of 26
  • [Front cover and table of contents]

    Publication Year: 1982, Page(s): 0
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    Freely Available from IEEE
  • Tunable lasers - An overview

    Publication Year: 1982, Page(s):1179 - 1185
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (871 KB)

    The purpose oft his editorial and the SpeciaIls sue on Tunable Lasers is to highlight the large number of research opportunities in the area of tunable lasers. The extensive list of applications provides both justification and a sense of urgency for research on tunable lasers. The Guest Editors hope that the objective has been reached. Ever since laser sources were first demonstrated, the idea of ... View full abstract»

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  • Pulse-pumped operation of divalent transition-metal lasers

    Publication Year: 1982, Page(s):1185 - 1188
    Cited by:  Papers (34)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (517 KB)

    The pulse-pumped operating characteristics of liquid-nitrogen-cooled Ni:MgF2, Co:MgF2, and Ni:CaY2Mg2Ge3O12(CAMGAR) solid-state lasers have been studied. The internal quantum efficiency of the Ni:MgF2laser was found to be limited to approximately 40 percent, presumably because of excited-state absorption. The Co:MgF2... View full abstract»

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  • Broad-band emission from chromium doped germanium garnets

    Publication Year: 1982, Page(s):1197 - 1201
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    By varying the composition of a series of germanium garnets, it is possible to change the lattice constant of the structure over a wide range, and thus the crystal field. Three Cr-doped germanium garnets (Ca3Al2Ge3O12, CaY2Mg2Ge3O12, and MgY2Mg2Ge3O12) have been grown... View full abstract»

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  • A comparison of the Cassegrain and other beam expanders in high-power pulsed dye lasers

    Publication Year: 1982, Page(s):1208 - 1213
    Cited by:  Papers (6)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (879 KB)

    We have constructed and compared high peak power YAG-pumped dye lasers using a variety of beam expansion methods, particularly the Cassegrainian telescope, grazing-incidence, and achromaticprism beam expander designs. We find that the Cassegrainian design offers a modest advantage over the conventional Hänsch or refractive telescope design in larger magnification and hence, narrower linewidth... View full abstract»

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  • A tunable CO2laser sideband spectrometer

    Publication Year: 1982, Page(s):1214 - 1220
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (860 KB)

    We describe a high-resolution spectrometer for the9-11 mum wavelength region, which is tunable over 23 GHz wide regions below and above each of some 80 CO2laser lines. An electrooptic modulator mixes the frequency-stabilized CO2laser output (frequency fL) with tunable microwave signals (frequency fM) to produce tunable, spectrally pure (p... View full abstract»

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  • Small signal gain and saturation intensity of 00° 1-[10°0, 02°0]I and IIvibrational band transitions in sealed-off CO2isotope lasers

    Publication Year: 1982, Page(s):1229 - 1236
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (836 KB)

    Effects due to Fermi resonance play a major role in determining the very significant variations of gain in the various CO2isotopes. We have measured the small signal gain coefficients and saturation parameters for five transitions (J= 12, 16, 20, 24, 28) in each of the four rotational branches of the00deg 1-[10deg0, 02deg0]I and IIvibrational bands using... View full abstract»

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  • Efficient multikilowatt mid infrared difference frequency generation in CdGeAs2

    Publication Year: 1982, Page(s):1239 - 1242
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (566 KB)

    Multikilowatt mid infrared emission with high pump photon conversion efficiency (∼ 15 percent) has been obtained by difference frequency generation in CdGeAs2utilizing the double wavelength output from a grating tuned twin-cavity TEA CO2system, one signal of which is frequency doubled to provide efficient synchronized sources for both pump and idler. Tuning over a spect... View full abstract»

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  • Large dc-electric-field-induced nonlinear optical susceptibility of hydrogen atomic vapors

    Publication Year: 1982, Page(s):1242 - 1246
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    A unique set of circumstances makes the Rydberg states of atoms ideal for mediating tunable, resonantly enhanced, nonlinear optical interactions. The application of a dc electric field to a vapor of such atoms can induce a second-order orchi^{(2)}nonlinear susceptibility, which in the absence of the applied field would be forbidden by reasons of symmetry. This paper presents an exact ex... View full abstract»

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  • Electrooptic tunable filters for infrared wavelengths

    Publication Year: 1982, Page(s):1253 - 1258
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (658 KB)

    This paper describes the performance characteristics of an electronically tunable infrared filter based on the electrooptic effect. Like the acoustooptic tunable filter, this device operates by selectively coupling principal polarizations in a birefringent crystal at a Phase-matched wavelength by means of a spatially periodic refractive index perturbation. Instead of a traveling acoustic wave, how... View full abstract»

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  • 1.5 µm range InGaAsP/InP distributed feedback lasers

    Publication Year: 1982, Page(s):1272 - 1278
    Cited by:  Papers (39)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1026 KB)

    Lasing characteristics of InGaAsP/InP distributed feedback (DFB) lasers in the 1.5 μm range were studied theoretically and experimentally. Wave propagation in five-layer DFB waveguides were analyzed to estimate the effect of the structural parameters on threshold conditions. A brief consideration on designing a low threshold laser and its lasing wavelength was made. DFB buried heterostructure... View full abstract»

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  • Investigation of D2O-laser emission at 50, 66, 83, 111, and 116 µm

    Publication Year: 1982, Page(s):1294 - 1301
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1406 KB)

    A D2O laser oscillator axially pumped by a TEA CO2laser operating on the9P(32)line has been investigated. The laser emits five FIR lines whose emission characteristics are presented. For the three strongest lines (66, 111, and 116 μm) and an oscillator of length 45 cm, a single axial mode can be made to dominate. Special attention is drawn to the newly discove... View full abstract»

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  • Analysis of chemical degradation products in an e-beam pumped rare-gas halide laser

    Publication Year: 1982, Page(s):1302 - 1305
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (549 KB)

    Chemical degradation products created during the operation of ane-beam pumped, repetitively pulsed XeF laser with closed flow cycle capability are reported. From an initial lasing mixture of Ar/Xe/NF3, the degraded gas was found to contain N2F2(N2F4), CO2, nitrogen oxides, CF4, and SiF4. Gaseous spec... View full abstract»

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  • Optical fiber telecommunications

    Publication Year: 1982, Page(s): 1311
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (109 KB)

    First Page of the Article
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  • Coherent nonlinear optics, recent advances

    Publication Year: 1982, Page(s): 1311
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (109 KB)

    First Page of the Article
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  • [Back cover]

    Publication Year: 1982, Page(s): 0
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    Freely Available from IEEE
  • Tunable Cerenkov lasers

    Publication Year: 1982, Page(s):1259 - 1264
    Cited by:  Papers (68)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    The concept of a tunable Cerenkov laser is introduced and expressions for the operating wavelength and stimulated emission rate are developed. Emphasis is on the development of criteria which must be met if tunable far-infrared device operation is to be achieved. View full abstract»

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  • Scalable visible Nd:YAG pumped Raman laser source

    Publication Year: 1982, Page(s):1246 - 1252
    Cited by:  Papers (8)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    Experimental and analytical studies of a 60 Hz, 0.45 W, 630 nm Raman laser source with a 12 ns pulse duration have demonstrated an overall electrical to optical efficiency of 0.12 percent. This is the first demonstration of a short pulse, high repetition rate red laser at such a high average output power without the need for a visible pump laser. Additional significance arises from the fact that s... View full abstract»

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  • Tunable pump laser stabilization of the optically pumped CF4laser

    Publication Year: 1982, Page(s):1237 - 1239
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    This paper reports a study of tunable laser-pump requirements for stable optically pumped CF4operation. Using an extremely precise method of measurement, the width of the absorption feature associated with lasing was determined. The results demonstrate the feature to be extremely narrow (∼ 15 MHz in our optical configuration) and provide constraints on the tunable pump laser that ... View full abstract»

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  • Measurement of spontaneous emission factor for injection lasers

    Publication Year: 1982, Page(s):1264 - 1271
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    Accurate numerical simulation of the dynamic behavior of injection lasers requires accurate values for the parameters used in physical models. One such parameter which has been difficult to measure accurately in the past is the spontaneous emission factor or degree of coupling of spontaneous emission into the lasing modes. A numerical value for this spontaneous emission factor is obtained by disto... View full abstract»

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  • Electrical pumping of color center lasers

    Publication Year: 1982, Page(s):1202 - 1208
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    This paper presents an assessment of the feasibility of using electrical pumping to achieve laser action in color centers in the alkali halides. We discuss mainly the self-trapped exciton in the alkali halides, which is a prime candidate for such a pumping scheme because it is known to produce strong electroluminescence. The theory of electrical contacts to insulating crystals is reviewed, as is t... View full abstract»

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  • Phase front reproduction in Raman conversion

    Publication Year: 1982, Page(s):1306 - 1310
    Cited by:  Papers (9)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    The Raman gain coefficient for nonplanar pump wave is calculated. The gain dependence for wavefront reproducing Stokes conversion and for an injected plane Stokes wave on the pump beam quality is derived. The amount of plane Stokes wave injection required to generate a plane Stokes wave output is discussed. A comparison is given for the homogeneity requirement of the pump laser medium as reflected... View full abstract»

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  • Status of CO2isotope lasers and their applications in tunable laser spectroscopy

    Publication Year: 1982, Page(s):1220 - 1228
    Cited by:  Papers (10)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1840 KB)

    The use of CO2isotopes can provide a manifold expansion of the usable frequency range of sealed-off CO2lasers. Determination of the frequency, gain, and saturation parameter of the various CO2isotopic laser transitions will be discussed. Design considerations for constructing CO2isotopic lasers and selected applications will be presented. View full abstract»

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  • Far field asymmetry in narrow stripe gain-guided lasers

    Publication Year: 1982, Page(s):1287 - 1294
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    A number of 5 μm stripe width shallow proton-bombarded double heterostructure (DH) AlGaAs LPE grown lasers show asymmetric light versus current characteristics and far fields. The optical power output above threshold is not the same for both faces at a given current. The far field patterns in the junction plane from the two mirrors are also different: the angular distribution of the optical p... View full abstract»

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  • Mode reflectivity of narrow stripe-geometry double heterostructure lasers

    Publication Year: 1982, Page(s):1279 - 1286
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    The mode reflectivity of narrow stripe-geometry double heterostructure (DH) lasers is computed taking into account lateral (parallel to the junction) confinement in addition to transverse (normal to the junction) confinement. For most practical stripe width devices, the addition of lateral confinement insignificantly alters the reflectivity of the lowest order mode; calculations based upon transve... 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