Sumários
Photodetectors. Photodiodes. Photodetection operation modes. Responsivity. Operation speed and bandwidth. Time responses.
28 Outubro 2019, 15:00 • José Figueiredo
Photodetectors. Photodiodes. Photodetection operation modes. Responsivity. Operation speed and bandwidth. Time responses. Absorption Coefficient. Absorption and Direct and Indirect Transitions. Absorption and the Bandgap. Pn junction photodiode operation principles. Photodetection Modes. External quantum efficiency (QE) of the detector Responsivity R. Quantum efficiency and responsivity. Photocurrent and Responsivity Depend on the Wavelength. External Quantum Efficiency and Responsivity. Pin photodiode. Internal Quantum Efficiency. Responsivity dependence on the temperature. Responsivity of a pin photodiode. Steady state photocurrent in the pin photodiode. Operation and speed of a pin photodiode. Influence of photocarrier Diffusion in a pin photodiode speed. Basic Photodiode Circuits. Photodiode Equivalent Circuit. Reverse Biased Photodiode Equivalent Circuit. Cutoff Frequency fc. Time response: Pulsed Excitation. Rise and Fall Times, and Bandwidth. Time-response: Pulsed Excitation. Non-RLCt response.
Photodetectors. Photodiodes. Photodetection operation modes. Responsivity. Operation speed and bandwidth. Time responses.
28 Outubro 2019, 14:00 • José Figueiredo
Photodetectors. Photodiodes. Photodetection operation modes. Responsivity. Operation speed and bandwidth. Time responses. Absorption Coefficient. Absorption and Direct and Indirect Transitions. Absorption and the Bandgap. Pn junction photodiode operation principles. Photodetection Modes. External quantum efficiency (QE) of the detector Responsivity R. Quantum efficiency and responsivity. Photocurrent and Responsivity Depend on the Wavelength. External Quantum Efficiency and Responsivity. Pin photodiode. Internal Quantum Efficiency. Responsivity dependence on the temperature. Responsivity of a pin photodiode. Steady state photocurrent in the pin photodiode. Operation and speed of a pin photodiode. Influence of photocarrier Diffusion in a pin photodiode speed. Basic Photodiode Circuits. Photodiode Equivalent Circuit. Reverse Biased Photodiode Equivalent Circuit. Cutoff Frequency fc. Time response: Pulsed Excitation. Rise and Fall Times, and Bandwidth. Time-response: Pulsed Excitation. Non-RLCt response.
The laser cavity definitions and the output laser beam characteristics. Single mode semiconductor laser diodes
23 Outubro 2019, 14:30 • José Figueiredo
The laser cavity definitions and the output laser beam characteristics. Laser diode output beam astigmatism. Laser output wavelength variation with temperature. Laser Diode Efficiencies. External Quantum Efficiency. Internal Quantum Efficiency. Extraction efficiency. Power Conversion Efficiency. Laser diode efficiencies for a sky-blue LD. Laser Diode Equations. Laser diode rate equations. Threshold Gain. Threshold current and optical output power from a Fabry-Perot (FP) heterostructure laser diodes. Single mode Semiconductor Laser Diodes. Distributed Bragg Reflector (DBR) LDs. Distributed Feedback (DFB) LDs. External Cavity Laser Diodes (ECLD).
The laser cavity definitions and the output laser beam characteristics. Single mode semiconductor laser diodes
23 Outubro 2019, 13:30 • José Figueiredo
The laser cavity definitions and the output laser beam characteristics. Laser diode output beam astigmatism. Laser output wavelength variation with temperature. Laser Diode Efficiencies. External Quantum Efficiency. Internal Quantum Efficiency. Extraction efficiency. Power Conversion Efficiency. Laser diode efficiencies for a sky-blue LD. Laser Diode Equations. Laser diode rate equations. Threshold Gain. Threshold current and optical output power from a Fabry-Perot (FP) heterostructure laser diodes. Single mode Semiconductor Laser Diodes. Distributed Bragg Reflector (DBR) LDs. Distributed Feedback (DFB) LDs. External Cavity Laser Diodes (ECLD).
Semiconductor Laser Diode.
21 Outubro 2019, 15:00 • José Figueiredo
Semiconductor Laser Diode. Laser diode invention. Homojunction laser diode working principle. Semiconductor Optical Cavity. GaAs homojunction laser diode. Laser diode output. Double Heterostructure Laser Diode. Stripe Geometry Laser Diode. Transverse modes in Stripe Geometry Laser Diode. Buried Double Heterostructures. Modes in a laser and the optical cavity length. Quantum Well Lasers. A GaAs quantum well.