Product Introduction Zinc Germanium Phosphide (ZnGeP2, ZGP) crystal is an outstanding nonlinear frequency conversion material, often referred to as the "King of Mid-Infrared Crystals." It boasts a broad transmission range (0.7-12μm), a high nonlinear coefficient (75pm/V), good thermal conductivity (35W/mK), a high damage threshold (100MW/cm²), and an optimal birefringence. These properties make it highly efficient for generating mid-infrared lasers within the 3-5μm and 8-10μm ranges through frequency conversion.
Quality Grade:Optical Grade.
Product Features and Functions This product is mainly used in mid-to-far infrared solid-state lasers for frequency conversion, as illustrated in Figure 1. It operates by using ~2μm wavelength laser as a pump source, which excites the ZGP crystal device. Techniques such as Optical Parametric Oscillation (OPO) or Optical Parametric Amplification are then employed to achieve high-power/large-energy mid-infrared laser output.
ZGP is a positive uniaxial nonlinear optical crystal. The pump light is ordinary (o) light, and the Type I phase matching method is o → e + e with a cut angle φ=0°; for Type II phase matching, it's o → o + e with a cut angle φ=45°. ZGP crystals can utilize either Type I phase matching or Type II non-critical phase matching. The wavelength tuning in ZGP-OPO is mainly achieved by adjusting the incident angle of the pump light, with small-range tuning accomplished by altering the crystal temperature.
Main Performance Specifications
Usage Precautions
(1) Storage Environment Requirements 1) Store the product in a dry, non-corrosive environment. 2) Storage temperature: 15~25ºC. 3) Storage humidity: ≤70%. 4) Purity requirement: Class 7 or higher cleanroom.
(2) Operating Environment Requirements 1) Assemble or use this product in a Class 4 or higher cleanroom or localized clean environment. 2) Operating temperature range: -45ºC to +60ºC.
(3) Shelf Life The shelf life of this product is provisionally set at 3 years, provided the storage environment requirements are met.
(4) Handling and Operation Instructions 1) Unbox the product in a cleanroom to avoid contamination. 2) Handle the product with care to prevent chipping or breakage. 3) If the packaging is damaged, please contact customer service immediately.
(5) Transportation and Storage During transportation, prevent the product from exposure to chemicals, impact, and moisture. Unopened products should be stored in a dry, non-corrosive environment.
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