Ultrafast Optics with VirtualLab™
VirtualLab™ 4.5 and higher enables ultrashort pulse modeling. Pulses are represented by sets of harmonic fields which are propagated through optical systems using the powerful vectorial field tracing technique of VirtualLab™. By a quasi-analytical treatment of material dispersion the sampling effort in the frequency domain can be kept small. Transformation into the time domain is always possible.
Your Benefit
- x-component of the pulse in the center of a focal region of an aspherical high NA focusing lens.
- Analysis of ultrashort pulse propagation through systems including material and angular dispersion, refraction, diffraction, interference, and polarization.
- Access to the x-, y-, and z-component of the electric field of the pulse.
- Electromagnetic modeling of fs pulses in focal regions of lens systems including diffraction and aberrations.
- Modeling grating diffraction for ultrashort pulses.
- Investigation of spatiotemporal evolution of pulses in optical system
Selected Features
Generator for pulses with Gaussian temporal envelope. By specification of the central wavelength and the pulse duration the Gaussian envelope spectrum is generated. Also the frequency sampling can be fixed in the dialog via the estimated time window in the detector plane.
Dialog to specify the
Gaussian temporal envelope
Arbitrary lateral pulse profiles allowed. All sources available in the Light Path Diagram can be combined with the envelope spectrum of a temporal pulse. The results we see in an enormous flexibility to specify the temporal and lateral distributions of ultrashort pulses.
Optical Path Length Analyzer to minimize sampling effort. VirtualLab™ comes with an OPL analyzer. It efficiently calculates the OPL along the axis of the system. From that it concludes the pulse propagation time according to the group velocity. Finally the phase caused by the material dispersion is concluded. That is the basis for the innovative smart inclusion of material dispersion.
Temporal Fourier transformation. Simulation of ultra-short pulses is done in the frequency domain. In order to obtain the temporal pulse a Fourier transformation between time and frequency domain is implemented. It is based on the same powerful FFT algorithm as between the space and the k-domain.
Tools to evaluate pulses in time and frequency domain. As in case of temporal pulses VirtualLab™ represents general source radiation by sets of harmonic fields. Often it is interesting to extract the values at one specific location or along a line and provide them in diagrams. In ultrashort modeling that is the base for the temporal Fourier transformation.
Sets of harmonic fields can be
evaluated by tools, e.g., along a line.
Outlook Feature Development
- Import of and programmable envelope functions for customized temporal pulse
- Chirped pulse generator
- Grating pulse compressor and shaper simulation
- Simulation of effect of prisms on pulses
- Pulse modeling benefits from all other developments of VirtualLab™
- Contact us with your comments and suggestions for further features demanded in ultrashort pulse modeling