I.Plane mirror

1. Dielectric film mirror: multilayer dielectric film is plated on the surface of optical element to make a certain band interference superposition, thus enhancing the reflectivity. Dielectric film has high reflectance and can be used in wide wavelength spectrum region. The film has no absorption of light and is hard and not easy to be damaged. It is suitable for multi-wavelength laser optical system. This kind of mirror has thick film layer, sensitive Angle and high cost.

2. Laser line mirror: the substrate material of laser line mirror is ultraviolet fused quartz, and the highly reflective film on its surface is Nd:YAG dielectric film, plated by electron beam evaporation and ion assisted deposition process. Compared to K9 material, UV fused quartz has better uniformity and lower coefficient of thermal expansion, making it particularly suitable for use in ultraviolet to near infrared bands, high power laser and imaging fields. The common laser line mirrors have four operating wavelengths of 266 nm, 355 nm, 532 nm and 1064 nm. The incidence Angle is divided into 0-45° or 45°, and the reflectance is up to 97%.

3. Ultrafast mirror: The substrate material of ultrafast mirror is fused quartz, and the highly reflective film on its surface is the low-group delayed dispersion dielectric film, plated by ion beam sputtering (IBS) process. Fused quartz has a lower coefficient of thermal expansion and extremely high thermal shock stability, making it particularly suitable for high power femtosecond pulse laser and imaging fields. The common working wavelength range of the ultrafast mirror is 460 nm-590 nm, 700 nm-930 nm, 970 nm-1150 nm and 1400 nm-1700 nm. The beam incidence is 45°, and the reflectance is up to 99.5%.

4. Super mirror: super mirror by plating multiple layers of alternating refractive index medium reflection film on the UV fused quartz base, by increasing the number of film layers to improve the reflectivity, can make the reflectivity of super mirror at the design wavelength is better than 99.99%, suitable for high reflectivity requirements of the optical system.

5. Metal film mirror: Metal film mirror is very suitable for wide spectrum light source path deflection, it has a high reflectivity in a wide spectrum range. Metal film in high humidity environment is easy to be oxidized discoloration or fall off, so the metal film mirror is generally coated with a layer of silicon dioxide protective film on its surface, used to isolate the direct contact between the metal film and the air, to avoid the effect of metal film oxidation on optical performance.

II. Rectangular prism mirror

Usually right Angle edge plating anti - reflection film, beveled edge plating reflection film. Rectangular prisms themselves have a large contact area and typical angles such as 45° and 90°, so compared with ordinary mirrors, rectangular prisms are easier to install and have better stability and strength against mechanical stress. They are the best choice of optical components for all kinds of devices and instruments.

III. Off-axis parabolic mirrors

An off-axis parabolic mirror is a surface mirror whose reflecting surface is an intercepted part of the parent paraboloid. The off-axis parabolic mirror can be used to focus parallel beams or collimating point sources, and its off-axis design can separate the focus from the optical path. Compared with the lens, the off-axis parabolic mirror does not produce spherical aberration, chromatic aberration, and does not introduce phase delay and absorption loss, so it is very suitable for femtosecond pulse laser.

IV. Hollow roof prism mirror

1.GFAl aluminium film Mirror:

Aluminum film mirror is divided into bare aluminum film mirror and protective aluminum film mirror. Protective aluminum film mirror is plated on aluminum film with a layer of MgF2 or SiO2, which is used to protect aluminum film from abrasion or oxidation. It has high reflectivity at all incidence angles and can be used as a reflector for ultraviolet, visible and near-infrared light.

2.GFAu Gold Film Mirror:

Mirrors plated with high reflectance gold film can be used in the near infrared, infrared spectrum of the wide range of the spectrum, in order to enhance the adhesion of the gold film, plated with an extremely thin chromium substrate film. The gold film adhesion of silicon substrate is very strong, the thermal conductivity is very high, and the heat resistance is much better than that of glass substrate. Since it is a gold film, the reflectance or reflectance wavelength characteristics do not change greatly with the incidence Angle. It has a high reflectivity in the infrared spectrum region, and the light without reflection is absorbed by the film and will not pass through.

3.GFAg Silver Film Mirror:

From visible to near infrared bands, the average reflectance is high. A protective film is plated on the silver film, which can prevent oxidation and prolong the service life. Compared with aluminum film mirrors, the reflectance is higher in visible to near infrared bands. Compared with the dielectric film mirror, the reflectance is less affected by the incidence Angle and can be used for various incidence angles. Plated protective film, cloth wipe is not easy to scratch.

4.GFM wideband dielectric film Mirror:

Wideband dielectric film mirror has high reflectance in wide band and is suitable for wavelength modulation laser and white light. Dielectric film mirrors are sensitive to the incidence Angle. If not specified, the default incidence Angle of dielectric film mirrors is 45°. The dielectric film has little absorption and can withstand continuous laser irradiation.