Pyroelectric Detector
Application ID: 110101
This 2D axisymmetric model demonstrates the operation of a pyroelectric detector found in instruments for measuring laser energy.
A disk of lithium niobate (LiNbO3) is sandwiched between two electrodes and connected to an external circuit. The disk is mounted on a ring-shaped conducting pad with limited thermal conduction. A pulsed energy flux applied to the top surface of the disk represents the absorption of infrared laser. This model uses the Piezoelectricity and Pyroelectricity Multiphysics Interface which includes Pyroelectricity, Piezoelectric Effect, and Thermal Expansion couplings.
A time-dependent study is used to compute the temperature evolution in the disk and the pyroelectric current.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Grille des Spécifications and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.