Photorefractive Crystals: SBN-75

Description

SBN-75 (Strontium Barium Niobate) is a photorefractive crystal similar to SBN-60, but with a different composition ratio of strontium, barium, and niobium. SBN-75 has a ratio of 75:25:1, which results in different optical properties compared to SBN-60.

Like SBN-60, SBN-75 exhibits strong photorefractive properties, making it useful in holography, optical storage, and optical phase conjugation applications. However, SBN-75 has some advantages over SBN-60 in certain applications.

One advantage of SBN-75 is its higher photorefractive sensitivity, which allows for faster response times in applications such as holographic data storage. SBN-75 also has a higher photorefractive damage threshold than SBN-60, which makes it more suitable for high-power laser applications.

SBN-75 is also useful for applications such as self-pumped phase conjugation, where it can be used to correct for distortions in laser beams caused by atmospheric turbulence or other factors. In this application, SBN-75 acts as a self-pumped phase conjugate mirror, reflecting the incoming laser beam back onto itself with a phase reversal that cancels out any distortions.

Overall, SBN-75 is a valuable photorefractive crystal for a variety of optical applications, with advantages such as higher sensitivity and higher damage threshold compared to SBN-60. Its photorefractive properties make it useful in holography, optical storage, and optical phase conjugation, and it is a promising candidate for high-power laser applications.

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