Pacific Coast Optics Filters
Filters
Dichroic filter coatings are designed to transmit one spectral region (passband) and reflect another (rejection band). The filter is a short wave pass if the passband is to the left of the transition slope and a long wave pass if the passband is to the right of the slope. The advantages of dichroic filters over colored glass filters are: 1) the rejection band is reflected rather than absorbed; 2) a steeper transition slope between the passband and the rejection band; i.e., a sharper cut-on or cut-off; and 3) coatings can be custom designed for specific center wavelengths.
Polarizers
Proper material selection and bonding techniques (for prism cubes) are vital for the optimum performance and P/S separation of polarizing beam spitters. Pacific Coast Optics specializes in polarizing optics for precision laser and broadband applications ranging from UV to IR (193nm to 3 µm). RMI manufactures thin film plate polarizers up to 12” and polarizing beam splitter cubes up to 6” to fit your application.
For low power applications between 350 nm and 3 µm, we use a cementing process to bond the prisms.
High-Power Prism Bonds
For high-power applications between 193 nm and 3 µm, we will bond the prisms using a special optical contacting process that allows for the bonding of a coated surface to a glass surface without the use of cement. If your application requires high-extinction ratio polarizing optics, call Pacific Coast Optics and let our experienced technical staff provide you with the optimum, cost-effective solution.
Custom Prisms
Our custom prisms are produced with a wide range of optical materials, including FS, BK7, high-index glasses, CaF2, ZnSe, Si and others, featuring the highest surface quality and tightest angular tolerances. Our Customer Service Team will work closely with you to arrive at the optimum, cost-effective solution.