Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1990-1994  (15)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Single-frequency antiguided laser array with buried distributed feedback grating (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 7220-7223 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Single-frequency, in-phase mode operation has been obtained from a ten-element antiguided phase-locked array with Talbot-type filters by incorporating a buried distributed feedback grating using a three-step metalorganic chemical vapor deposition process. Stabilized frequency with 25 dB side-mode suppression ratio is achieved to 50 mW pulsed output power. In-phase or a mixture of in-phase and out-of-phase modes are observed in nonresonant (nonoptimized) devices. Means of improving device performance (e.g., use of resonant longitudinally uniform arrays or nearly resonant Talbot-filter arrays without gratings in the filter) are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356677
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Flat-phasefront fanout-type power amplifier employing resonant-optical-waveguide structures (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 63 (1993), S. 3113-3115 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A novel type of fanout master-oscillator power amplifier (MOPA) device using resonant antiguided structures is proposed, modeled, and demonstrated. Light injected in the central antiguide of an antiguided structure fans out, with increasing device length, due to resonant transmission between adjacent antiguide cores. After 1-mm device length the emitting aperture becomes ≈100 μm wide, and the beam has a flat phasefront. The device has a strong built-in index step (Δn=0.02–0.05), which makes it insensitive to the problems encountered with conventional fanout-type amplifiers: filamentation and drive-dependent beam pattern. Experimental results include flat-phasefront and a diffraction-limited emission from a 130-μm-wide exit aperture when the entry aperture is a 3-μm-wide antiguide core.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.110220
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Antiresonant reflecting optical waveguide-type, single-mode diode lasers (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 503-505 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Antiresonant reflecting optical waveguide (ARROW)-type diode lasers have been demonstrated for the first time. The ARROW structure is made in the lateral direction (i.e., the plane of the junction) by two-step metalorganic chemical vapor deposition. Stable, diffraction-limited beam operation is achieved to 0.6 W peak pulsed power and 20× threshold. The power contained within the diffraction-limited beam pattern is 420 mW with 60% of the energy residing in the central, diffraction-limited lobe. Modal calculations for ARROW lasers confirm very strong intermodal discrimination. Theoretical calculations and preliminary experimental data show that up to 90% of the energy can be obtained in the central lobe (475 mW diffraction-limited power).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108475
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    High-power coherent surface-emitting antiguided diode laser arrays (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 627-629 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-power coherent GaAs/GaAlAs surface-emitting antiguided laser arrays with dry etched micromirrors have been demonstrated for the first time. Both the deflecting 45° and 90° micromirrors were fabricated by ion beam etching. Twice diffraction-limited far-field beam profiles were obtained to pulsed output powers as high as 550 mW, with 220 mW in the central lobe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107828
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Resonant self-aligned-stripe antiguided diode laser array (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 668-670 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Resonant-optical-waveguide (ROW) arrays with a self-aligned-stripe (SAS) geometry have been realized for the first time. Resonance is achieved by holding the array element/interelement widths constant and varying the aluminum composition of the passive guide layer. External differential quantum efficiencies as high as 47% have been achieved from longitudinally uniform 20-element 1000 μm-long devices. Diffraction-limited-beam operation is obtained up to 13×threshold, and 2.1 W output power level from devices with Talbot-type spatial filters. The front-facet emitted coherent uniphase power is 1.6 W, with 1.15 W in the central lobe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.106586
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    High-power cw operation of InGaAs/GaAs surface-emitting lasers with 45° intracavity micro-mirrors (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 2085-2087 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-power cw operation of horizontal-cavity, monolithic InGaAs/GaAs surface-emitting lasers with all dry etched micro-mirrors has been demonstrated for the first time. The 45° and 90° micro-mirrors of the devices were fabricated by ion-beam etching and reactive ion etching techniques, respectively. Threshold-current densities of less than 500 A/cm2, external differential quantum efficiencies of 10% (0.12 W/A) from the emitting facet, and output powers in excess of 100 mW were achieved from uncoated devices driven under cw operation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.106140
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Watt-range, coherent, uniphase powers from phase-locked arrays of antiguided diode lasers (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 2070-2072 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Twenty-element near-resonant AlGaAs/GaAs arrays of antiguides have been optimized for maximum intermodal discrimination and large Strehl ratio. It is found that 1000-μm-long devices with two intracavity Talbot-type spatial filters, and a 3 to 1 ratio between element core and interelement spacing provide the best results. The intermodal discrimination is discussed for both Talbot and uniform devices. For devices with two Talbot-type spatial filters, diffraction-limited-beam operation is obtained to 1 W pulsed power, and operation in a beam with lobewidth 1.5× diffraction limit is obtained to 2 W and 19× threshold. cw diffraction-limited-beam operation is obtained to 0.5 W, limited by thermal considerations. Uniform devices operate in beams with lobewidth ≈3× diffraction limit to 5 W and 45× threshold. At 5 W total output the coherent uniphase power is 1.6 W, and the coherent power in the main lobe is 0.94 W.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105013
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    cw high-power diffraction-limited-beam operation from resonant optical waveguide arrays of diode lasers (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 22-24 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Monolithic phase-locked resonant arrays of antiguides, resonant optical-waveguide (ROW) arrays, have been optimized for efficient in-phase-mode operation. Diffraction-limited, in-phase-mode continuous-wave (cw) operation is obtained from 20-element uniform arrays to 250 mW output power, with (front facet) external differential quantum efficiencies of 41%. Single longitudinal mode operation is observed below 100 mW cw. In-phase-operating devices with and without Talbot-type spatial filters are compared, and it is found that for ROW arrays Talbot-type spatial filters are not required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104425
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Injection locking of leaky-wave coupled resonant optical waveguide arrays (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 62 (1993), S. 547-549 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Injection locking of mutually coupled resonant antiguided arrays, consisting of up to four ten-element arrays, has been demonstrated. External injection causes single-longitudinal mode operation, and enhanced phase-locking of the coupled arrays. The injected signal is distributed via leaky-wave coupling, so that the master-oscillator signal injected into one element (3 μm) of one array locks the whole array ensemble (223 μm wide aperture). Wavelength tuning is achieved over a 12 A(ring) spectral range for two coupled arrays, and has no impact on the coupled array far-field pattern.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108906
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Simple description of laterally resonant, distributed-feedback-like modes of arrays of antiguides (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 1049-1051 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Bloch-function method is used to provide a simple, yet accurate treatment of the leaky modes of infinite-extent antiguided arrays. Laterally resonant modes of infinite arrays are described for the first time. Bloch-function solutions for infinite arrays are used to explain key characteristics of the modes of finite-extent antiguided arrays. It is found that the resonant modes of antiguided arrays satisfy the second-order lateral Bragg condition, and consequently are analogous to the modes of second-order distributed-feedback (DFB) lasers. In effect, the resonant-optical-waveguide (ROW) array is a second-order lateral DFB structure with the radiative component along the longitudinal device axis, and zero stopband.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.106440
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...