Stability of quantum-dot excited-state laser - diss.fu
... Optoelectronic devices, like directly modulated or mode-locked lasers, based on semiconductor quantum dots (QDs) show superior performance compared to devices based on higher dimensional active layers.1 The devices display low threshold currents and an ultrafast gain recovery.2,3 Under operating con ...
... Optoelectronic devices, like directly modulated or mode-locked lasers, based on semiconductor quantum dots (QDs) show superior performance compared to devices based on higher dimensional active layers.1 The devices display low threshold currents and an ultrafast gain recovery.2,3 Under operating con ...
The Three-Backlink Experiment Albert Einstein Institute K.-S. Isleif , J.-S. Hennig
... (MPI) Max Planck Institute for Gravitational Physics ...
... (MPI) Max Planck Institute for Gravitational Physics ...
High-peak-power pulse generation from a
... for I PA between 1.5 A and 3 A. Therefore, we interpret this behavior as a consequence of a compound cavity effect. Namely, the optical pulse is generated by the complete cavity (DFB plus amplifier) behaving more as a two-section tapered laser than as an ideal MOPA. In fact, a similar dependence of ...
... for I PA between 1.5 A and 3 A. Therefore, we interpret this behavior as a consequence of a compound cavity effect. Namely, the optical pulse is generated by the complete cavity (DFB plus amplifier) behaving more as a two-section tapered laser than as an ideal MOPA. In fact, a similar dependence of ...
Chapter 2 Femtosecond Laser Pulses - diss.fu
... a nonlinear medium, e.g. a Ti:sapphire crystal, which is pumped by a cw radiation. As aforementioned, for high intensity light, due to the intensity dependent refractive index, the Kerr lens effect occurs. When the laser operates in its most usual regime (free-running laser ), it can oscillate simul ...
... a nonlinear medium, e.g. a Ti:sapphire crystal, which is pumped by a cw radiation. As aforementioned, for high intensity light, due to the intensity dependent refractive index, the Kerr lens effect occurs. When the laser operates in its most usual regime (free-running laser ), it can oscillate simul ...
Parhelic-like Circle and Chaotic Light Scattering
... We are proposing the combination of two main processes of the light transport in foams: a diffusive one related to Gaussian function, and another one related to chaotic dynamics. Just considering the aspects of the geometrical optics, the curvature of soap film structures cause incident light to be ...
... We are proposing the combination of two main processes of the light transport in foams: a diffusive one related to Gaussian function, and another one related to chaotic dynamics. Just considering the aspects of the geometrical optics, the curvature of soap film structures cause incident light to be ...
Qn_Bank1
... Mention any 4 properties of ultrasonic waves. What is magnetostriction effect? What is meant by piezoelectric effect? What are the different methods used for the production of ultrasonic waves? Mention some uses of the ultrasonic waves. What is SONAR? Explain how ultrasonic waves are used in SONAR. ...
... Mention any 4 properties of ultrasonic waves. What is magnetostriction effect? What is meant by piezoelectric effect? What are the different methods used for the production of ultrasonic waves? Mention some uses of the ultrasonic waves. What is SONAR? Explain how ultrasonic waves are used in SONAR. ...
Role of dispersion in pulse emission from a sliding
... linear excess gain d . 0, whereas in Figs. 6 – 8 d , 0. In Figs. 3 – 5 we set b 3d 0.15 and we varied the nonlinear gain (or saturable loss) coefficient from g 0 (dashed curves) to g 20.035 (solid curves) and g 20.07 (dotted – dashed curves). As can be seen from Fig. 3, the presence of a f ...
... linear excess gain d . 0, whereas in Figs. 6 – 8 d , 0. In Figs. 3 – 5 we set b 3d 0.15 and we varied the nonlinear gain (or saturable loss) coefficient from g 0 (dashed curves) to g 20.035 (solid curves) and g 20.07 (dotted – dashed curves). As can be seen from Fig. 3, the presence of a f ...
Mode-locking
Mode-locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12 s) or femtoseconds (10−15 s).The basis of the technique is to induce a fixed-phase relationship between the longitudinal modes of the laser's resonant cavity. The laser is then said to be 'phase-locked' or 'mode-locked'. Interference between these modes causes the laser light to be produced as a train of pulses. Depending on the properties of the laser, these pulses may be of extremely brief duration, as short as a few femtoseconds.