Description: High Energy Nd:YAG Laser Mirror
Part Number | 20QM20HM.35 |
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Category | Optics |
Manufacturer | Newport |
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The 20QM20HM.35 by Newport is a High Energy Nd:YAG Laser Mirror characterized by a 50.8 mm diameter and a 9.65 mm thickness. This mirror is meticulously optimized for an angle of incidence (AOI) set at 45° and features a specialized coating tailored to the fundamental wavelengths of 532 nm. With a reflectivity surpassing 99% for both p-polarization and s-polarization at the aforementioned wavelength, this mirror ensures remarkable efficiency in redirecting light. Its construction material is fused silica, a synthetic amorphous silicon dioxide glass known for its exceptional purity. This glass variety stands devoid of color and crystalline structure, enabling unparalleled transmission within the UV to NIR wavelength spectrum. An integral feature of the 20QM20HM.35 is its extraordinarily low thermal expansion coefficient and minimal inclusion content, coupled with a high homogeneity of refractive index. These qualities stem from its meticulous fabrication process. Consequently, the mirror seamlessly accommodates fluctuations in temperature.
Wavelength Range | 532 nm |
Diameter | 50.8 mm |
Surface Flatness | λ/10 at 632.8 nm |
Wedge | ≤3 arc min |
Clear Aperture | ≥ Central 80% of Diameter |
Reflectivity | Rs>99.7%, Rp>99% @ 532 nm |
Chamfers | 0.38 mm –1.14 mm Face Width |
Damage Threshold | 3 KW/cm2 CW 10 J/cm2 @ 20 ns, 20 Hz |