The spatial light modulator has been hailed as a "game-changer in optical design". With its flexible phase and amplitude modulation capabilities, MSI liquid crystal spatial light modulators offer endless possibilities for innovative optical designs and applications. The team adheres to the concept of "leading customers with technology and maintaining customers with service". Through continuous process exploration, optimization and research on various technical problems, the R & D team recently launched the advanced version of FSLM-2K70P02HR phase spatial light modulator, which has the advantages of high light utilization, high diffraction efficiency, high linearity and small structure.
FIG. 1 2K70-P02HR spatial light modulator
Relying on digital light field control technology, it is committed to the development of electric addressing liquid crystal spatial light modulator, and the product types cover more than 20 types of transmission and reflection spatial light modulator products. Based on the independent design and mass production of liquid crystal light valve, it has stepped on a new process of product iteration and excellence.
Figure 2 Batch liquid crystal light valve FIG. 3 Batch spatial light modulators
High light utilization:
Covering 420~700nm wide band, achieve ≥90% light utilization, minimize light energy loss, and provide more efficient energy utilization for optical systems.
Figure 2. Reflectance spectrum of LCOS light valve in 420-700nm band
High diffraction efficiency
Achieve 420~700nm band, 32 order diffraction efficiency greater than 90%, ensuring excellent beam modulation capability and optical performance.
FIG. 3 Diffraction pattern of the spot after adding the blazed grating
High linear modulation characteristics
In the band of 420~700nm, the linearity of phase modulation curve is ≥0.99, which ensures the high precision and reliability of optical modulation.
FIG. 4 Phase modulation power curve and linearity diagram
Compact structure, compatible with external and internal structure
The self-developed driver board is based on the flexible programmable FPGA platform, which can solve the real-time image data from the control calculation graphics card and process it in a timely manner. At the same time, the frame synchronization module is embedded to realize the input and output synchronization function. In addition, the structure is small (about 80mm*80mm), and the light valve supports a variety of internal integrated and external swing structures, which is easy to fix in the optical path.
Figure 5. Miniaturized FPGA driver board
Product index
Typical application
The optical efficiency, diffraction efficiency and linearity of spatial light modulator are very important indicators, which play an important role in optical communication, lithography, optical imaging, optical display and other applications.
Optical communication: In multi-beam optical communication systems implemented using SLM, high optical utilization can improve the signal-to-noise ratio of the system, thus achieving higher transmission rates; High diffraction efficiency can improve the transmission distance and transmission rate of optical communication, so as to achieve faster and further data transmission. For example, in an adaptive optical communication system implemented using SLM, high diffraction efficiency can improve the effect of adaptive compensation, thereby reducing signal attenuation and distortion in optical communication.
Figure 7 Illustration of SLM application in WSS communication
Optical imaging: In digital holography using SLM, high light utilization and diffraction efficiency can improve the clarity and contrast of reconstructed images.
Figure 8 Example of SLM application in holography
lithography: In lithography systems implemented using SLM, high light utilization can improve the energy utilization of the lithography light source, thereby reducing exposure time and cost.
FIG. 9 SLM application in lithography
More expectation
CAS Microstar always adheres to the purpose of high-end modulator performance, domestic price and quality service, and is committed to creating more value for more customers. At present, we are committed to developing more new spatial light modulator development and product optimization changes, is expected to meet you in the fourth quarter, please look forward to our next technological leap!