Perrin Broca prisms are commonly used to separate harmonics in laser beams and can also be used to compensate for group velocity dispersion. Since the light enters and exits the prism at close to Brewster's angle, the loss of P-polarized light is minimized. After the beam enters the prism at a Brewster angle, it undergoes a total reflection and then exits at a Brewster angle, where the outgoing light is deflected by 90° with respect to the incident light.

Specification(Pellin Broca Prism)
Material	BK7, UV Fused Silica
Diameter Tolerance	±0.2mm
Irregularity (P-V)	λ/10@632.8nm
Angular Tolerance	±3′
Parallelism	I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.
Surface Accuracy	10/5
Thickness Tolerance	I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.
Blocking Depth	I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.
Clear Aperture	>80%
Dimensions Tolerance	I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.
Optical Density(OD)	I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.