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  • 1
    Electronic Resource
    Electronic Resource
    Second-order susceptibility in asymmetric quantum wells and its control by proton bombardment (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 1724-1726 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report measurements of extremely large mid-infrared second-order susceptibilities due to intersubband transitions in an asymmetric quantum well, and selective suppression of these susceptibilities by proton bombardment of the sample. The measured second-order susceptibility for second-harmonic generation of 9.25–10.78 μm is in good agreement with theoretical calculations based on measured infrared absorption spectra, which show the lowest two intersubband transitions. The peak value of the susceptibility is 58 nm/V, 320 times larger than the bulk nonlinear susceptibility of GaAs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105121
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  • 2
    Electronic Resource
    Electronic Resource
    Proposed structure for a crossed-laser beam, GeV per meter gradient, vacuum electron linear accelerator (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 753-755 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We propose a dielectric-based, multistaged, laser-driven electron linear accelerator structure operating in a vacuum that is capable of accelerating electrons to 1 TeV in 1 km. Our study shows that a GeV/m gradient is achievable using two 100 fs focused crossed-laser beams, repeated every 300 μm, operated at a peak power of 0.2 GW and an energy density of less than 2 J/cm2 on the accelerator structure. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.116731
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  • 3
    Electronic Resource
    Electronic Resource
    Uniform refractive index cladding for LiNbO3 single-crystal fibers (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 1931-1933 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A uniform refractive index cladding for LiNbO3 single-crystal fibers has been achieved using a Mg ion indiffusion process. This cladding has a uniform MgO concentration of ∼20 mol %, resulting in a uniform refractive index. The refractive indices of the cladding material have been evaluated to be ne=2.08 and no=2.09 at 0.6328 μm by using the light reflection technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103025
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  • 4
    Electronic Resource
    Electronic Resource
    Quasi-phase-matched second-harmonic generation of blue light in periodically poled LiNbO3 (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 108-110 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: LiNbO3 crystals with periodically alternating ferroelectric domains have been produced using laser-heated pedestal growth. Domain thicknesses as small as 1 μm have been achieved. This material was applied to room-temperature, quasi-phase-matched frequency doubling to generate light at wavelengths as short as 407 nm, using the d33 and d22 nonlinear coefficients. The measured conversion efficiencies and wavelength and temperature tuning bandwidths are consistent with an effective interaction length of ≈320 μm (〉230 domains). An initial test with high-intensity focused blue beams showed that the periodically poled material exhibits no discernible photorefractive damage effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103276
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  • 5
    Electronic Resource
    Electronic Resource
    Characterization of single-crystal sapphire fibers for optical power delivery systems (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 2170-2172 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Sapphire single-crystal fibers with diameters of 110 μm and lengths of over 2 m have been grown by the laser-heated pedestal growth method. The fibers are free of imperfections such as voids and bubbles. The minimum loss of 0.5 dB/m was measured in the near infrared at 1064 nm. Absorption loss at 2936 nm was 0.88 dB/m with a damage threshold higher than 1.2 kJ/cm2 for 110-μs-long pulses making tissue ablation feasible with fibers several meters in length.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102348
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  • 6
    Electronic Resource
    Electronic Resource
    Visible BaB2O4 optical parametric oscillator pumped at 355 nm by a single-axial-mode pulsed source (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 2014-2016 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A visible BaB2O4 optical parametric oscillator (OPO) pumped by a single-axial-mode 355-nm source has been demonstrated. An average output power of 140 mW with a signal wave conversion efficiency of 13% and an idler conversion efficiency of 11% for a total conversion efficiency of 24% has been achieved. The oscillator has continuously tuned from 412 nm to 2.55 μm limited by the infrared transmission range of the crystal. Through injection seeding we obtained single-axial-mode OPO operation with a corresponding OPO linewidth of less than 3 GHz.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100492
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  • 7
    Electronic Resource
    Electronic Resource
    Measurement of soft x-ray multilayer mirror reflectance at normal incidence using laser-produced plasmas (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 269-271 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have used laser-produced plasmas as a broadband source of soft x rays to measure the normal incidence reflectance of multilayer mirrors in the 10–25 nm spectral region. The measurements have a spectral resolution of 0.03 nm and a reflectance resolution of 10%. Measurements made on a Mo/Si multilayer show excellent agreement with results obtained using a synchrotron and indicate a normal incidence peak reflectance of over 50% at 15 nm. By repeating the reflectance measurement at different positions across a single 7.5 cm mirror we determined multilayer uniformity as a function of position and we relate this dependence to the geometry of the deposition process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.99490
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  • 8
    Electronic Resource
    Electronic Resource
    Periodically poled LiNbO3 for high-efficiency second-harmonic generation (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 2657-2659 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Quasi-phase-matched room-temperature frequency doubling to generate blue, green, and red light was demonstrated using periodically poled LiNbO3 crystals. A 1.24-mm-long sample in an external resonant cavity generated 1.7 W of green power from an input of 4.2 W at the 1.064 μm Nd:YAG laser line when heated to 140 °C to compensate for a slight error in periodicity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105929
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  • 9
    Electronic Resource
    Electronic Resource
    A proposed high-gradient laser-driven electron accelerator using crossed cylindrical laser focusing (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 2175-2177 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We propose a dielectric-based, crossed-laser-beam electron linear accelerator structure operating in a vacuum that is capable of providing 1 TeV electrons in approximately 1 km. The accelerator structure employs cylindrical laser focusing that allows for simplifying the fabrication process, accelerating more electrons, reducing the electron phase slip, minimizing the transverse wake-fields, and spreading the structural thermal loading. We present a 0.7 GeV/m average-gradient accelerator structure, repeated every 390 μm, subject to the laser damage fluence 2 J/cm2 on the optical components for 100 fs laser pulses. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.117156
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  • 10
    Electronic Resource
    Electronic Resource
    Remote air pollution measurement (1975)
    Springer
    Optical and quantum electronics 7 (1975), S. 147-177 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The availability of high energy tunable laser sources has extended the possibilities for remote air pollution measurement. This paper presents a discussion and comparison of the Raman method, the resonance and fluorescence backscatter method, long path absorption methods and the differential absorption method. A comparison of the above remote detection methods shows that the absorption methods offer the most sensitivity at the least required transmitted energy. Topographical absorption provides the advantage of a single ended measurement, and differential absorption offers the additional advantage of a fully depth resolved absorption measurement. Recent experimental results confirming the range and sensitivity of the methods are presented. Future widespread use of remote pollution monitoring will probably be limited to the infra-red to interact with molecular spectral bands and to meet eye safety requirements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619589
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