Cube beam splitter

Cube beam splitter

It includes broadband polarization beam splitting cube, high-power laser linear polarization beam splitting cube, and laser linear polarization beam splitting cube.

1. Broadband polarization splitting cube

The broadband polarization splitting cube is made of a pair of high-precision right angle prisms through a special bonding process. The core of it lies in the wide band polarizing beam splitter film coated on one side of the prism slope, which can efficiently separate S-polarized light (reflection) and P-polarized light (transmission). To achieve optimal performance and protect the adhesive layer, the incident light should enter from the right angled surface of the prism coated with a spectral film. The incident surface has been clearly marked with a permanent frosted mark on the top. Each transparent surface of the cube is coated with a broadband anti reflection film (Ravg<0.5%) to ensure low loss transmission throughout the entire operating frequency band.

(1) Broadband polarization splitting cube, anti reflective film: 420 nm-680 nm

(2) Broadband polarization splitting cube, anti reflective film: 620 nm-1100 nm

(3) Broadband polarization splitting cube, anti reflective film: 900 nm-1300 nm

(4) Broadband polarization splitting cube, anti reflective film: 1200 nm-1600 nm

2. High power laser linearly polarized beam splitter cube

The high-power laser linear polarization beam splitting cube is composed of a pair of ultraviolet fused silica right angle prisms. The slope of one prism is coated with high-performance dielectric polarization beam splitting film, and the other slope is precisely polished. To ensure efficient laser transmission, all four right angled surfaces are coated with a V-shaped anti reflection film optimized for the working wavelength, with a reflectivity of less than 0.25%. The two prisms are bonded together through precision optical bonding technology, ensuring the stability and durability of the components under high power conditions.

This polarization splitting cube can separate the incident laser into two orthogonal linearly polarized light beams, where P-polarized light is efficiently transmitted and S-polarized light is highly reflected. In the design of the product, the optical path structure has been specially optimized. It is recommended that the laser be incident from the right angle surface of the prism coated with a polarizing splitting film to achieve the best polarizing splitting effect. At this time, the extinction ratio (Tp/Ts) can reach 2000:1 or more, meeting the high-precision polarization control requirements.

3. Laser linear polarization beam splitting cube

Laser linearly polarized beam splitter cube is a high-performance laser optical element designed for precise separation of P-polarized and S-polarized light. It is composed of a pair of UV grade fused silica right angle prisms, which are coated with a specific dielectric beam splitter at the key interface. It can efficiently separate an incident laser beam into two orthogonal linear polarized light beams perpendicular to each other in the propagation direction - high transmittance P polarized light and high reflectivity S polarized light.

Product core features:

·High polarization purity: With excellent extinction ratio (Tp: Ts>3000:1), it ensures that the outgoing beam has the highest polarization purity, meeting the requirements of precision optical experiments and systems.

·Low optical loss: All four transparent surfaces are coated with V-shaped anti reflection films designed specifically for specific wavelengths, with a residual reflectivity of less than 0.25% at the design wavelength, effectively improving the system's optical efficiency.

·Correct usage guidelines: To ensure optimal performance and long-term reliability, prisms coated with a spectral film have clearly marked points. The incident light enters from a right angle surface with the marked point, which allows the laser to first act on the spectral film, avoiding multiple reflections and accumulations of laser energy in the optical adhesive. This is the key to maintaining stability in medium to high power applications.

·High quality material and structure: UV fused silica material is used, which has low thermal expansion coefficient and high laser damage threshold. The cube structure is firm and stable, which is convenient for integrated installation.

Main applications:

·Optical isolators and circulators

·Polarization beam synthesis and segmentation system

·Interference measurement and sensing system

·Quantum Information Experimental Platform

·Various precision laser processing and testing equipment

Cube beam splitterSelection Table