Dichroic mirrors also known as wavelength separators or combiners are used in various applications. One of the most common use in resonators is to transmit pump and reflect lasing wavelengths. Outside of the resonator, optics are used for harmonic separation. Diode laser systems use many such optical elements to combine various wavelengths.
Dichroic mirrors available from stock
Description
Dichroic mirrors, also known as wavelength separators or combiners, are optical elements that have different reflection or transmission properties at two (or more) different wavelengths. They are used in various applications, including resonators and diode laser systems.
Resonator dichroic mirrors transmit the pump light and reflect the laser light, which is why they are also called pump and lasing wavelength mirrors. After the laser, harmonic separation mirrors split the main wavelength from the harmonics created in nonlinear crystals, and diode laser beam combining mirrors merge several diode wavelengths into one beam.
All our dielectric-coated dichroic mirrors are made with the same optical coatings technology as our dielectric mirrors. Outside lasers, they are used as fluorescence microscopy dichroic mirrors and spectroscopy dichroic mirrors. Inside a laser they work together with laser crystals; for shaping the output beam, see our beam shapers.
Specifications
Standard Manufacturing Specifications
| Material: | UVFS, BK7 |
| Dimensions tolerance: | +/- 0.1 mm |
| Clear aperture: | > 90% of aperture dimensions |
| Surface quality: | 20-10 S-D |
| Surface flatness: | < λ/8 @ 633 nm |
| Parallelism error: | < 1 arcmin |
| Perpendicularity error: | +/- 5 arcmin |
| Protective chamfers: | 0.1-0.3 mm x 45° |
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