A beam splitter is an optical element that divides a beam of light into two beams according to a certain reflection and transmission ratio. In the usual laser optical system, illumination optical system, and spectrometer optical system, the beam splitter is a common optical element. The user can divide the incident light according to the intensity transmission and reflection percentage, and the polarization state of the transmission and reflection light according to the specific application requirements. Huasen Optoelectronics can provide K9 broadband beam splitter, elliptical broadband beam splitter, aluminum-plated lattice beam splitter, UV fused silica aluminized lattice beam splitter, UV beam splitter wedge, calcium fluoride (CaF2) infrared broadband Wedge, zinc selenide (ZnSe) infrared broadband splitter wedge, standard cubic beam splitter, polarized cubic beam splitter (PBS), depolarized beam splitter (also called non-polarized beam splitter prism) and other standard beam splitters. The function of the depolarization beam-splitting prism is to divide the incident light according to a certain reflection and transmission ratio to the intensity of the incident light, so it is an ideal beam splitting element when controlling the application of laser beams. The function of the polarization beam splitter (PBS) is to divide the incident light according to a certain percentage of reflected and transmitted light according to the polarization state of the corresponding light. It is mainly used in the field of laser research and corresponding optical instrument products.
Broadband spectroscopic flat film
The front surface of the beam splitting plate is coated with a beam splitting film, and the back surface is usually coated with an anti-reflection coating to reduce the interference effect between the beams and ghost images. The light splitting sheet is light in weight, moderate in price, and relatively easy to manufacture. Watson Optoelectronics provides a variety of light splitting plates, including broadband light splitting plates, aluminum-plated lattice light splitting plates, elliptical light splitting plates and visible light splitting plates.
Aluminized dot-matrix spectroscopic flat film
For the dielectric film beam splitter, the reflectivity of the polarization component p is always lower than the reflectivity of the s component. In a cubic beam splitter, this effect is even more obvious. In applications with higher polarization requirements, a metal film beam splitter should be selected. The aluminum-plated lattice beam splitter has a wide range of wavelengths and is insensitive to the angle of incidence. The light splitting sheet is light in weight, moderate in price, and relatively easy to manufacture. The aluminum-plated dot-matrix spectroscopic flat sheet provided by Huasen Optoelectronics, the transmitted light is formed by an array of uncoated circular holes with a diameter of 0.25mm~0.5mm.
Elliptical broadband spectroscopic flat film
The elliptical beam splitter can be conveniently and accurately installed in various round lens barrels, saving the use of space and generating around spot. Huasen Optoelectronics provides a variety of elliptical spectroscopic flat sheets with spectroscopic coating on the front surface and VIS, NIR and SWIR anti-reflection coating on the back surface.
Economical spectrophotometer
The front surface of the beam splitting plate is coated with a beam splitting film, and the back surface is usually coated with an anti-reflection coating to reduce the interference effect between the beams and ghost images. The light splitting sheet is light in weight, moderate in price, and relatively easy to manufacture. Huasen Optoelectronics provides a variety of light splitting plates, including broadband light splitting plates, aluminum-plated lattice light splitting plates, elliptical light splitting plates and visible light splitting plates.
UV splitter wedge
The wedge angle of the wedge-shaped beam splitter and the anti-reflection coating on the back can reduce the interference of ghost images reflected on the back surface. The high-precision substrate ensures the accuracy of the reflected and transmitted light wavefront. Huasen Optoelectronics provides wedge-shaped beamsplitters that provide multiple beam splitting ratios. The antireflection coatings include UV, VIS, and NIR.
UV aluminized dot-matrix spectroscopic flat film
The aluminum-plated lattice beam splitter has a wide range of wavelengths and is insensitive to the angle of incidence. The light splitting sheet is light in weight, moderate in price, and relatively easy to manufacture. Huasen Optoelectronics provides aluminum-coated dot-matrix light splitting flat plate, the reflected light part is the reflection of the aluminum film dot-matrix, and the transmitted light is made from the quartz substrate in the uncoated area. The dot matrix is composed of 0.1mm x 0.1mm aluminum-plated small squares.
Infrared spectroscopic wedge
The wedge angle of the wedge-shaped beam splitter and the anti-reflection coating on the back can reduce the interference of ghost images reflected on the back surface. The high-precision substrate ensures the accuracy of the reflected and transmitted light wavefront. Huasen Optoelectronics provides wedge-shaped beamsplitters that provide multiple beam splitting ratios. The antireflection coatings include UV, VIS, and NIR.
Cube dichroic prism
The cube dichroic prism is coated with a layer of film on the inclined surface of the right-angle prism and then glued with the same right-angle prism to form a cube dichroic prism. It can avoid the astigmatism of the flat beam splitter, the coating is not directly exposed, and it is not easy to be damaged and corroded. Compared with a flat beam splitter, the reflected and transmitted light paths of the beam splitter are equal. When transmitting light, the beam splitting prism has no influence caused by light deviation, so there will be no troubles of beam translation, ghost images, and interference. Used for spectroscopy and imaging. There is no need for long-time calibration at 46° angle incidence.
Polarization beam splitter
For the polarization beam splitting prism, when the incident angle satisfies the Brewster angle condition, the reflectance of the polarized light P is 0, and the film layer is controlled so that the reflectance of the polarized light s is close to 1, and the transmittance of the polarized light p is close to 1. When the light beam is incident on the film in the air, because the refractive index of the air is relatively small, it is not easy to reach the Brewster angle condition, so the film must be enclosed in a glued prism. Compared with the beam splitter, the reflected and transmitted light paths of the beam splitter prism are equal. When transmitting light, the beam splitting prism has no influence caused by light deviation, so there will be no troubles of beam translation, ghost images, and interference. Used for spectroscopy and imaging. There is no need for long-time calibration when an incident at a 45° angle. The P component of the incident light is completely transmitted, while the S component of the incident light is reflected in a direction perpendicular to 90°.
