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  • Cr2+:ZnS

    Cr2+:ZnS

    Cr²+:ZnS is a laser gain medium formed by doping divalent chromium ions (Cr²⁺) into zinc sulfide (ZnS) crystals. Its core advantages reside in ultra-broadband tunable laser emission in the 2–3μm and exceptional passive Q‑switching performance, establishing it as one of the key materials for contemporary mid-infrared solid-state laser technologies.

  • BBO crystal

    BBO crystal

    BBO is a new ultraviolet frequency doubling crystal. It is a negative uniaxial crystal, with ordinary refractive index (no) larger than extraordinary refractive index (ne). Both type I and type II phase matching can be reached by angle tuning.

  • AGGSe(AgGaGe5Se12) Crystals

    AGGSe(AgGaGe5Se12) Crystals

    AgGaGe5Se12 is a promising new nonlinear optical crystal for frequency-shifting 1um solid state lasers into the mid-infrared (2-12mum) spectral range.

  • AGSe(AgGaSe2) Crystals

    AGSe(AgGaSe2) Crystals

    AGSe AgGaSe2 crystals have band edges at 0.73 and 18 µm. Its useful transmission range (0.9–16 µm) and wide phase matching capability provide excellent potential for OPO applications when pumped by a variety of different lasers. Tuning within 2.5–12 µm has been obtained when pumping by Ho:YLF laser at 2.05 µm; as well as non-critical phase matching (NCPM) operation within 1.9–5.5 µm  when pumping at 1.4–1.55 µm. AgGaSe2 (AgGaSe2) has been demonstrated to be an efficient frequency doubling crystal for infrared CO2 lasers radiation.

  • AGS(AgGaS2) crystals

    AGS(AgGaS2) crystals

    AGS is transparent from 0.50 to 13.2 µm. Although its nonlinear optical coefficient is the lowest among the mentioned infrared crystals, high short wavelength transparency edging at 550 nm is made use of in OPOs pumped by Nd:YAG laser; in numerous difference frequency mixing experiments with diode, Ti:Sapphire, Nd:YAG and IR dye lasers covering 3–12 µm range; in direct infrared countermeasure systems, and for SHG of CO2 laser. Thin AgGaS2 (AGS) crystal plates are popular for ultrashort pulse generation in mid IR range by difference frequency generation employing NIR wavelength pulses.

  • ZGP(ZnGeP2) Crystals

    ZGP(ZnGeP2) Crystals

    ZGP crystals possess large nonlinear coefficients (d36=75pm/V), wide infrared transparency range(0.75-12μm), high thermal conductivity(0.35W/(cm·K)), high laser damage threshold (2-5J/cm2)and well machining property, ZnGeP2 crystal was called the king of infrared nonlinear optical crystals and is still the best frequency conversion material for high power, tunable infrared laser generation. We can offer high optical quality and large diameter ZGP crystals with extremely low absorption coefficient α < 0.02 cm-1(at pump wavelengths 2.0-2.1 µm), which can be used to generate mid-infrared tunable laser with high efficiency through OPO or OPA processes.

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