These thin film cube beamsplitters combine the excellent characteristics of the laser polarizing beamsplitters previously described with the advantage of broadband application. The polarizing film is fully protected within the cube making them durable and convenient to use. Three wavebands have been chosen to cover most general applications: 450-650 covers the visible spectrum and a wide selection of laser wavelengths 650-900 covers most visible range diode lasers and 1200-1550 covers most telecommunications band diode lasers. Although these polarize will work well over the entire broadband specified they are manufactured to laser performance standards.
Standard
Specifications
Items
Specifications
Material
BK7 Grade A or equivalent Optical Glass
Dimension Tolerance
¡À 0.2 mm
Surface Quality
scratch and dig 60-40
Beam Deviation
< 3 arc min
Flatness
¦Ë/4 at 632.8 nm per 25 mm
Principal Transmittance
Tp>95% and Ts<1%
Principal Reflectance
Rs>99% and Rp<5%
Coating
Broadband polarization beamsplitter coating: on hypotenuse