DKDP – Deuterated potassium dihydrogen phosphate
390 nm - 1400 nm
DKDP (KD2PO4) is an isomorphic single crystal, also known as deuterated KDP. It is grown using the water-solution method, achieving a high level of deuteration (typically >98%).
DKDP crystals supplied by 3photon are widely used in non-linear optical systems and electro-optical (EO) applications, particularly those requiring large apertures. They are also employed in Pockel cells.
- Applications
- Features
- Disadvantages
Nd:YAG, Nd:YLF laser systems: DKDP crystals function as laser frequency converters, supporting 2nd to 4th harmonic generation in low repetition rate (<100 Hz) and high pulse energy systems, such as Q-switched and mode-locked lasers. They can also serve as Q-switching crystals in these systems.
Ti:Sapphire and Alexandrite laser systems are used as Q-switching crystals.
Dye laser systems: Facilitates 2nd to 4th harmonic generation.
Electro-Optical applications: Widely used as electro-optical modulators and in OPA/OPO systems due to their excellent electro-optic coefficients.
Pockels cells: Utilized as Q-switching crystals. 3photon employs DKDP crystals with a very high deuteration level (D2>98%).
High-speed photography: DKDP crystals are suitable for use as shutters.
- Working wavelength 390-1400 nm.
- The relatively simple growth technique ensures cost efficiency.
- Can be grown to very large sizes.
- Can be tailored for specific wavelengths with dielectric thin-film anti-reflective coatings applied by 3photon.
- Compatible with a broad range of pumping sources.
- Hygroscopic (moisture affects DKDP immediately).
- The material is soft, making high-quality polishing challenging.
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