Frequency Shifter FS1S
A frequency shifter optimal for heterodyne measurements that slightly shifts the frequencies of two lights and stabilizes the difference between the two frequencies. 【Configuration】 It consists of two AOMs (acousto-optic modulators) and their drivers. The incident light with a light frequency (f0; for HeNe laser, 474THz) is split into two paths, and each light frequency is shifted to f0+f1 (approximately 80MHz) and f0+f2. The shift amount is very small (f1/f0 ~ 0.0000002), but this slight shift enables processing by electronic circuits, realizing optical heterodyne measurements. The frequency stability of the frequency shifter is achieved by synchronizing the oscillation frequencies of the two drivers that supply high-frequency power to the two AOMs. This provides a level of frequency stability that cannot be achieved with independent drivers. ● For other functions and details, please download the catalog.
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A frequency shifter optimal for heterodyne measurement that slightly shifts the frequencies of two lights and stabilizes the difference between the two frequencies. 【Configuration】 It consists of two AOMs (Acousto-Optic Modulators) and their drivers. The incident light with a light frequency (f0; for HeNe laser, 474THz) is split into two beams, and each beam's light frequency is shifted to f0+f1 (approximately 80MHz) and f0+f2. The shift amount is very small (f1/f0 ~ 0.0000002), but this slight shift enables processing by electronic circuits, realizing optical heterodyne measurement. The frequency stability of the frequency shifter is achieved by synchronizing the oscillation frequencies of the two drivers that supply high-frequency power to the two AOMs. This provides a level of frequency stability that cannot be achieved with independent drivers. ● For other functions and details, please download the catalog.
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We have established 'High-precision measurement of physical quantities using light' as our management policy. Optical measurement technology has become an indispensable element of modern cutting-edge technology. We are confident that the demand for high-precision measurement will grow stronger with the advancement of science. By combining high-precision measurement with the excellent properties of light—non-invasive, non-intrusive, non-contact, and high-precision—we can expect further technological innovation. It may not be suitable for measuring mass-produced items, nor for online measurements. However, we are committed to making it useful for cutting-edge industries that require high-precision measurement of physical quantities.
