Thin film optical polarizer
CVI Melles Griot
* High damage threshold Brewster-angle polarizer, >20 J/cm2
* Angle tuning suggested to achieve maximum transmission
* Contact CVI Melles Griot for intermediate wavelengths and additional dimensions
* Contact an applications engineer for OEM mirror mounts and system integrations capabilities
TFP thin-film plate polarizers are the best choice when maximum laser damage resistance is necessary. Typically, thin film polarizers are used for fluences greater than 500 mJ/cm2, where calcite air-spaced polarizers exhibit long-term tracking and cemented polarizers cannot be used at all. Applications for the TFP include usage as an intracavity Q-switch hold-off polarizer, and, in conjunction with a half-wave plate, as an extracavity attenuator for an Nd:YAG laser fundamental and its harmonics. To maximize transmission, users must make a provision in their mechanical setup for the necessary angular tuning. Note that the losses at the uncoated second surface are insignificant at ±3 degrees from Brewster's angle.
