DETERMINING SPATIAL MODES OF SEMICONDUCTOR LASERS
... The correlation data is processed using an algorithm based on Jacobian control. This algorithm extracts the basis modes and weights from the matrix. The algorithm is iterative and uses information from the data for its initial guess instead of a start based on prior knowledge of the laser. We tested ...
... The correlation data is processed using an algorithm based on Jacobian control. This algorithm extracts the basis modes and weights from the matrix. The algorithm is iterative and uses information from the data for its initial guess instead of a start based on prior knowledge of the laser. We tested ...
The List of Author`s Publications
... stresses within the laser material and, in addition, deformation of the laser rod end faces due to differential expansion [12]. The net result is beam distortion due to thermal lensing, depolarization loss due to stress induced birefringence and ultimately catastrophic failure due fracture of the la ...
... stresses within the laser material and, in addition, deformation of the laser rod end faces due to differential expansion [12]. The net result is beam distortion due to thermal lensing, depolarization loss due to stress induced birefringence and ultimately catastrophic failure due fracture of the la ...
A mobile, high-precision atom-interferometer and its
... matter is subjected to. Throughout this thesis and in accordance with literature [8, 9] the term “gravity acceleration” or shorter “gravity” will denote the combined effect of the gravitational acceleration and the centrifugal acceleration due to Earth’s rotation. The instruments used for measuring ...
... matter is subjected to. Throughout this thesis and in accordance with literature [8, 9] the term “gravity acceleration” or shorter “gravity” will denote the combined effect of the gravitational acceleration and the centrifugal acceleration due to Earth’s rotation. The instruments used for measuring ...
Multiterawatt few-cycle pulse OPCPA
... of laser light in 1960 [1]. The first laser pulses were produced by gain switching and by Q-switching also known as giant pulse formation. In the following years lasing action was reported from a HeNe gas mixture [2], and from Nd3+ -doped solid state laser material [3]. Population inversion in semico ...
... of laser light in 1960 [1]. The first laser pulses were produced by gain switching and by Q-switching also known as giant pulse formation. In the following years lasing action was reported from a HeNe gas mixture [2], and from Nd3+ -doped solid state laser material [3]. Population inversion in semico ...
High harmonic generation by short laser pulses: time
... is an excellent seed for a soft X-ray laser [16]. If a number of high harmonic fields are phase-locked (i.e., with a fixed phase relationship among them) and added together, then we obtain a train of sub-femtosecond pulses of coherent light separated by half the driving laser cycle [17]. Furthermore ...
... is an excellent seed for a soft X-ray laser [16]. If a number of high harmonic fields are phase-locked (i.e., with a fixed phase relationship among them) and added together, then we obtain a train of sub-femtosecond pulses of coherent light separated by half the driving laser cycle [17]. Furthermore ...
Laser Sources for Confocal Microscopy
... it absorbs pump energy and goes to an excited level [Fig. 5.2(A)]. It then returns to the ground state via non-radiative relaxation processes and also by emission of radiation [Fig. 5.2(B)]. Under normal conditions, a Boltzmann equilibrium describes the population of the various energy levels: the h ...
... it absorbs pump energy and goes to an excited level [Fig. 5.2(A)]. It then returns to the ground state via non-radiative relaxation processes and also by emission of radiation [Fig. 5.2(B)]. Under normal conditions, a Boltzmann equilibrium describes the population of the various energy levels: the h ...
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.