Quantum-dot ultrashort-pulse semiconductor lasers
Ultrashort pulse generation from quantum dot semiconductor diode lasers
... ultrafast semiconductor laser diodes offer the potential for the ultimate in compactness and integrability along with direct electrical control and higher ...in semiconductor lasers: gain-switching, ...
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Quantum dot based semiconductor disk lasers
... The development of vertical external cavity surface emitting lasers VECSELs, which are also known as optically pumped semiconductor lasers OPSLs or semiconductor disk lasers SDLs realize[r] ...
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Semiconductor Quantum Dot Lasers as Pulse Sources for High Bit Rate Data Transmission
... the quantum dots via homogeneous broadening of ...the dot size fluctuation, and to describe the interaction between the QDs with different resonant energies through photons, we divide the QD ensemble into ...
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High power ultra-short pulse quantum-dot lasers
... There are several techniques for producing ultra-short pulses from semiconductors lasers such as: gain switching, Q-switching and mode-locking [1-2]. Gain switching (Fig. 3.1) is the easiest technique for ...
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Recombination processes in quantum dot lasers.
... On this graph it can be seen that for a given current injection, the output power of the laser varies significantly with temperature. At high temperatures the laser could even stop lasing if the fixed current becomes ...
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The hole spin in a semiconductor quantum dot
... two lasers with frequencies separated in frequency by the fine ...both lasers from δ = 0 to δ = Γ/2, the sensitivity to charge noise increases (changing from second order to first order) yet the sensitivity ...
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Nanosecond colloidal quantum dot lasers for sensing
... CQD lasers, ...CQD lasers with a few nanosecond-pulse duration are made possible by utilizing a planar distributed feedback cavity that includes a high surface quality thin film made of an optimized ...
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Nanosecond colloidal quantum dot lasers for sensing
... CQD lasers, ...CQD lasers with a few nanosecond-pulse duration are made possible by utilizing a planar distributed feedback cavity that includes a high surface quality thin film made of an optimized ...
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Ultrashort electromagnetic pulse control of intersubband quantum well transitions
... of semiconductor quantum ...ductor quantum well with electromagnetic pulses with a duration of few cycles and even a single ...GaAs/AlGaAs quantum well structure, taking into account the ...
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Quantum dot-based semiconductor Terahertz transceiver systems
... ultrafast pulse laser systems; nonlinear down-conversion of coherent light in NLCs; ultrafast electronic signal modulation materials; and pulsed and CW PCA ...
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Monolithic dual-wavelength InP/AlGaInP quantum dot lasers
... a semiconductor which exhibits a short carrier lifetime, with high mobility and high resistivity, such as low temperature grown GaAs [McIntosh et ...laser pulse impinging on the gap creates electro-hole ...
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Semiconductor Quantum Well Lasers With a Temperature-Insensitive Threshold Current
... The devices were produced with as-cleaved facets and 1 and 1.5 mm cavity lengths. The devices were mounted in a closed cycle cryostat with tem- perature control over a temperature interval of 20–300 K. The devices were ...
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Ultrafast dynamics in InAs quantum dot and GaInNAs quantum well semiconductor heterostructures
... 7.7 Device prospects There are many parameters that define modulator characteristics; on/off ratio (R-dB), voltage required for on/off ratio (V), 3dB frequency response (f dB ), insertion loss and chirping parameter (α N ...
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Direct Photonic Coupling of a Semiconductor Quantum Dot and a Trapped Ion
... while the j↓i − j⇓↓↑i transition is off resonant by 20 GHz. Second, we prepare the desired spin mixture through optical pumping by driving the σ − transition with a pulse of variable duration, τ, and the σ þ ...
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Direct Photonic Coupling of a Semiconductor Quantum Dot and a Trapped Ion
... the pulse resonant with the red transition has a variable duration between 0 and 700 ns, which is used to create an incoherent spin superposition p ↑ |↑i h↑| + p ↓ |↓i h↓| with p ↑ varying between ...ns ...
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CMOS Integration of High Performance Quantum Dot Lasers For Silicon Photonics
... tilted semiconductor optical amplifiers (SOA) to minimize the back reflection from the interface between QD gain and Si 3 N 4 ...waveguide lasers are also designed to measure the coupling loss from the QD ...
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Red-Emitting III-Nitride Self-Assembled Quantum Dot Lasers.
... 116 The measurement system is shown schematically in Appendix C and is similar to the small signal analysis setup with the amplifier and electrical spectrum analyzer replaced with a high speed oscilloscope. The coherent ...
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Dropout dynamics in pulsed quantum dot lasers due to mode jumping
... a pulse pumped quantum dot laser both experimentally and ...pump pulse comes closer to the excited-state threshold, the output pulse shape becomes unstable and leads to ...
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Energy Levels of InGaAs/GaAs Quantum Dot Lasers with Different Sizes
... laser, Quantum dot size, Strain PACS numbers: ...INRODUCTION Semiconductor lasers have found many applications, and among many types of them, Quantum dot lasers have found ...
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A semiclassical approach to the spin dynamics in a singly charged semiconductor quantum dot
... pulsed quantum dot were ...Subsequent quantum mechanical investigations delved deeper into spin dynamics in a pulsed quantum dot ...a quantum mechanical approach allows for the ...
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