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Showing 1 to 11 of 11 for “"differential gain"”.
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Differential Gain in Academic Achievement and Behavioral Adjustment of Children With Learning Disabilities Among Three Administrative Arrangements: Implications for the Evaluation of Pupil Progress
Made available in DSpace on 2014-12-12T19:55:31Z (GMT). No. of bitstreams: 1 7821227.pdf: 8408473 bytes, checksum: ab255b19fd0584e717173bea58914a34 (MD5) Previous issue date: 1978
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Temperature-Dependent High-Speed Modulation and Wavelength Conversion Using Quantum-Well Lasers
… is presented. The steady-state measurement of gain is presented through four different approaches, including the direct (Hakki-Paoli) measurement of polarization-resolved spectra, correlation of gain and spontaneous emission, techniques for measuring the transparency energy, and a hybrid …
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A DC stabilized fully differential amplifier
The conventional method of constructing a gain amplifier is to use resistor feedback networks. However, present CMOS technology provides capacitors that offer substantially better tracking and linearity performance over variations in temperature. Draper Laboratory's High Performance Gyroscope …
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Design and fabrication of quantum-dot lasers
… counterparts namely: low threshold current, high differential gain and highly temperature stable light-current characteristics. This thesis investigates the lasing characteristics of a ridge-waveguide laser containing seven layers of quantum dots as the active region. A summary of the electrical …
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External control of semiconductor nanostructure lasers
… lasers that enables their potential for high differential gain and modified linewidth enhancement factor. However, there are known intrinsic limitations associated with semiconductor laser dynamics that can hinder the performance including the mode stability, spectral linewidth, and direct …
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Self-heating control of edge emitting and vertical cavity surface emitting lasers
… bandwidth due to increased loss and decreased differential gain. The main heat sources in laser diode during continuous wave operation are Joule heating and free carrier absorption loss. To control device self-heating, the epi structure needs to be designed with low electrical resistance and …
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Theory and Modelling of Wavelength Tunable Laser Transmitters With Enhanced Tuning Range and Their Modulation Performance
… selecting the Lorentzian lineshape of the gain spectrum. A power stabilisation was realised with continuous tuning. A small-signal analysis of directly intensity modulated TLDs during discontinuous tuning was also made and was found that the increase of the resonance frequency depends …
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Quantum dot gain-lever laser diode
… (QW) lasers) and also their potential for high differential gain and direct modulation with negligible chirp. Recently, substantial efforts have been made to improve the modulation characteristics of QD semiconductor lasers such as enhancing the modulation efficiency and improving the overall …
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Analog and Digital Circuits in a Complementary Organic TFT Technology on Flexible Substrate
… static and dynamic flip-flops, ring oscillator, differential gain stage, and rectifier/envelope detector) fabricated using a fully-printed organic complementary technology on flexible substrate are presented. The performance of the rectifier/envelope detector are explored up to 13.56-MHz thus …
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Study of carrier and gain dynamics in InGaAsN quantum well lasers
… of the carrier recombination dynamics, nonlinear gain dynamics and carrier capture and escape processes in InGaAsN quantum well lasers. The carrier dynamics is investigated through a comprehensive temperature dependent steady state photoluminescence (PL) and time evolution of PL spectra. The gain …
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Characteristics, Theory and Modeling of the Transistor Laser
… of fast base spontaneous carrier lifetime, high differential optical gain, and unique three-terminal electrical-optical characteristics for direct “read-out” of its optical properties. These potentially lead to advantageous and useful features for designing high-speed optical transmitters that …