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  • 1
    Electronic Resource
    Electronic Resource
    Short-optical-pulse generation from gain-switched laser diodes with two oscillation modes (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 4061-4064 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of two-wavelength oscillation for short-optical-pulse generation in laser diodes by sinusoidal current modulation has been investigated using a rate equation analysis. A high peak power and short pulse without a tail can be generated at the shorter wavelength λ2 with the help of carrier damping through carrier-photon conversion at the longer wavelength λ1. This can be obtained provided that the cw threshold current for λ1 is lower than that for λ2 and the gain g2 larger than g1 at the high carrier excitation levels that occur under the conditions of gain switching.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349155
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Mode locking of laser diodes by picosecond optical pulse synchronous pumping (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 1236-1238 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Short optical pulse generation from an external-cavity laser diode (LD) by optical pulse pumping has been investigated for the first time. An optical pulse train (pulse duration ∼40 ps) generated by a gain-switched LD was injected into a LD with an external cavity (slave LD) which was biased just below the laser threshold. The wavelength of the injected optical pulse was chosen to be slightly shorter than that of the slave LD. When the repetition rate of the optical injection pulse was nearly equal to the round trip time of the external cavity, the slave LD showed stable mode locking with the shorter pulse duration (∼22 ps) than that of the pumping pulse. At both the upper and lower repetition rates, the pulse duration of the slave LD also became shorter than that of the pumping pulse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104321
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Optical signal selection with a constant gain and a gain bandwidth by a multielectrode distributed feedback laser amplifier (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 1974-1976 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Optical demultiplexing characteristics are studied using a multielectrode distributed feedback laser amplifier. The gain maximum frequency is tunable over 20.6 GHz with a constant insertion gain (9.7±1.2 dB) and a constant gain bandwidth (2.9 GHz), without any mode jump, by changing the driving current of the divided two electrodes. A single optical signal can be selected from two optical inputs separated by 15.4 GHz with an extinction ratio of better than −20 dB.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98315
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Linewidth reduction and optical frequency stabilization of a distributed feedback laser by incoherent optical negative feedback (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 1360-1362 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new, incoherent, optical negative feedback method is proposed and demonstrated for spectral linewidth reduction and optical frequency stabilization of distributed feedback lasers. The spectral linewidth and the optical frequency drift are simultaneously reduced to about 50 kHz and less than 10 MHz, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.99979
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Coherent photon seeding of actively mode locked laser diodes (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 62 (1993), S. 2164-2166 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have applied a coherent photon seeding technique to actively mode locked laser diodes for the first time and successfully achieved a single longitudinal laser diode mode operation with a side mode suppression ratio of −20 dB. We have also proposed a new kind of pulse compressor consisting of a grating and a plane mirror, which gives positive group velocity dispersion. We obtained 11 ps pulses with spectral width of 0.32 nm. This gives us a time bandwidth product of 0.63, which is approximately twice the transform limited value for a sech2 pulse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.109456
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  • 6
    Electronic Resource
    Electronic Resource
    Absorptive and dispersive bistability in semiconductor injection lasers (1987)
    Springer
    Optical and quantum electronics 19 (1987), S. S1 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Recent progress in the study of both absorptive and dispersive bistability in semiconductor injection lasers is reported. Inhomogeneously excited semiconductor lasers as an absorptive case, and laser diode optical amplifiers and optical injection locking systems of laser diodes as dispersive cases, are described. Applications of bistable semiconductor lasers, such as optical memories, optical regenerative amplifiers and all-optical switching, are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02034349
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    Paper (German National Licenses)
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