KDP/DKDP Nonlinear Crystal
KDP/DKDP crystals serve large-aperture, high-power lasers for harmonic generation, electro-optic modulation, Q-switches and Pockels cells. KDP (potassium dihydrogen phosphate, KH₂PO₄) is an early practical functional crystal with large nonlinear coefficient/high damage threshold. DKDP (potassium dideuterium phosphate, KD₂PO₄) replaces H with D by growth in heavy water, retaining KDP advantages while reducing IR absorption and improving electro-optics. They are distinct isostructural related crystals, with different formulas, half-wave voltages and absorption; DKDP is a specific high-performance material rather than a simple upgrade. The source claims inertial-confinement fusion needs meter-scale optics and DKDP is the only solution-grown crystal combining such size, high uniformity, low absorption and suitable electro-optic coefficient. 晶众光电 states deuteration consistently>98%, important for low absorption/high damage threshold near2200cm⁻¹. Both crystals are water-soluble and polished surfaces readily deliquesce; the supplier recommends clean/dry use below50%RH and desiccated storage or its sealed metal package. For specifications, selection/customization, provide wavelength, size, power and conditions for confirmation.
Save to Favorites
Overview
Specifications
| Parameter | Value |
|---|---|
| Orientation Accuracy | < 10 arcmin |
| Clear Aperture Dimension | > 90% |
| Parallelism | < 20 arcsec |
| Perpendicularity | < 5 arcmin |
| Surface Quality [S/D] | 20/10, S/D |
| Flatness [632.8nm] | < λ/4 @ 632.8nm |
| Optical Damage Threshold [KDP Crystal; 1064nm; 10ns] | > 2 GW/cm² |
| Optical Damage Threshold [DKDP Crystal; 1064nm; 10ns] | > 1 GW/cm² |
| Extinction Ratio | 30dB |
| Electro-Optic Coefficient r₄₁ [KDP Crystal] | 8.8 pm/V |
| Electro-Optic Coefficient r₆₃ [KDP Crystal] | 10.3 pm/V |
| Electro-Optic Coefficient r₄₁ [DKDP Crystal] | 8.8 pm/V |
| Electro-Optic Coefficient r₆₃ [DKDP Crystal] | 25 pm/V |
| Nonlinear Coefficient d₃₆ [KDP Crystal] | 0.44 pm/V |
| Nonlinear Coefficient d₃₆ [DKDP Crystal] | 0.40 pm/V |
| Chemical Formula [KDP Crystal] | KH₂PO₄ |
| Chemical Formula [DKDP Crystal] | KD₂PO₄ |
| Crystal Structure [KDP Crystal] | Tetragonal Crystal System, 42m |
| Crystal Structure [DKDP Crystal] | Tetragonal Crystal System, 42m |
| Lattice Parameters [KDP Crystal] | a = 7.448 Å, c = 6.977 Å |
| Lattice Parameters [DKDP Crystal] | a = 7.4697 Å, c = 6.966 Å |
| Optical Symmetry [KDP Crystal] | Negative Uniaxial (nₒ>nₑ) |
| Optical Symmetry [DKDP Crystal] | Negative Uniaxial (nₒ>nₑ) |
| Density [KDP Crystal] | 2.338 g/cm³ |
| Density [DKDP Crystal] | 2.355 g/cm³ |
| Mohs Hardness [KDP Crystal] | 2.5 |
| Mohs Hardness [DKDP Crystal] | 2.5 |
| Transmission Range [KDP Crystal; 98% Deuterium Content] | 200-2100nm |
| Transmission Range [DKDP Crystal] | 200-1650nm |
| Refractive Index [KDP Crystal; 1064nm] | nₒ = 1.4938; nₑ = 1.4599 @1064nm |
| Refractive Index [DKDP Crystal; 1064nm] | nₒ = 1.4948; nₑ = 1.4554 @1064nm |
| Longitudinal Half-Wave Voltage Vπ [KDP Crystal; λ=546nm] | Vπ=7.65KV |
| Longitudinal Half-Wave Voltage Vπ [DKDP Crystal; λ=546nm] | Vπ=2.98KV |
| Absorption [KDP Crystal] | 0.07/cm |
| Absorption [DKDP Crystal] | 0.006/cm |
| Flatness [Processing Specifications; 633nm] | ≤ λ/8 |
| Surface Quality [Processing Specifications; MIL-PRF-13830B] | 20-10 |
| Parallelism [Processing Specifications] | ≤ 20 arcsec |
| Deuteration Level [DKDP Crystal; FAQ] | Greater than 98 |
| Operating Relative Humidity [KDP/DKDP; Clean and Dry Environment] | Below 50 |
Applications
Key Features
Datasheet
Please provide your email to download the datasheet.
Invalid email format. Please try again.
Supplier Information
Related Products
-
Lithium Tantalate Wafer LT
Optical Crystals
Jmwafer
Diameter [Lithium Tantalate Single-Crystal Substrate LiTaO3/LT (2~6 Inches)]: 2 inch - 50.8mm Diameter [Lithium Tantalate Single-Crystal Substrate LiTaO3/LT (2~6 Inches)]: 3 inch - 76.2mm Diameter [Lithium Tantalate Single-Crystal Substrate LiTaO3/LT (2~6 Inches)]: 4 inch - 100mm
LiTaO₃ Usually Colorless/Pale Yellow,Trigonal Distorted-Perovskite Structure,Excellent Electro-Optic,Piezoelectric/Pyroelectric Properties.
-
Lithium Niobate Wafer LN
Optical Crystals
Jmwafer
Diameter [Lithium Niobate Single-Crystal Substrate LiNbO3/LN (2~6 Inches)]: 2 inch - 50.8mm Diameter [Lithium Niobate Single-Crystal Substrate LiNbO3/LN (2~6 Inches)]: 3 inch - 76.2mm Diameter [Lithium Niobate Single-Crystal Substrate LiNbO3/LN (2~6 Inches)]: 4 inch - 100mm
LiNbO₃ Trigonal,Good Symmetry/Structural Stability,Piezoelectric,Ferroelectric,Photoelectric,Acousto-Optic/Nonlinear Properties,Curie up to1140℃,High Mechanical Quality/Chemical Stability.
-
Polycrystalline Diamond
Optical Crystals
Jmwafer
Polycrystalline Diamond - Dimensions: 10 mm × 10 mm Polycrystalline Diamond - Dimensions: 1 inch - 25.4mm Polycrystalline Diamond - Dimensions: 2 inch - 50.8mm
Diamond:Tetrahedrally Packed Carbon,Extremely Hard,Excellent Thermal Conductivity/Broad Optical Transparency,Hardest Known Natural Material,Also Synthesized at High Pressure/Temperature.
-
Single-Crystal Diamond
Optical Crystals
Jmwafer
Single-Crystal Diamond - Diameter: 5 mm × 5 mm Single-Crystal Diamond - Diameter: 10 mm × 10 mm Single-Crystal Diamond - Diameter: 20 mm × 20 mm
Diamond:Tetrahedrally Packed Carbon,Extremely Hard,Excellent Thermal Conductivity/Broad Optical Transparency,Hardest Known Natural Material,Also Synthesized at High Pressure/Temperature.
-
Fluorophlogopite
Optical Crystals
Jmwafer
Fluoromica Substrate - Dimensions: 5 mm × 5 mm Fluoromica Substrate - Dimensions: 10 mm × 10 mm Fluoromica Substrate - Dimensions: 20 mm × 20 mm
Synthetic Fluorophlogopite Mica KMg3(AlSi3O10)F2,Melts1375℃/Long-Term up to1100℃,Colorless Transparent,Strong Acid-Alkali Inert,Stable/Pure/Complete Structure/Flat Cleavage,Easily Split Thin.
Related Articles
In photonics and laser technology, devices that manipulate optical signals via the electro-optic effect form the backbone of precision optical systems. Electro-optic phase modulators and electro-optic deflectors are two prominent examples of this device category. As a critical hardware solution for high-speed, high-accuracy laser beam direction control, electro-optic deflectors are widely deployed across industrial and research settings. Below is a detailed overview of their core structure, key performance drivers, and primary use cases.
GYOPTICS 30 W collimated isolator is a highly‑reliable passive optical component optimized for 1064 nm high‑power laser systems. Characterized by low insertion loss and superior backward‑light suppression capability, it effectively blocks reflected light traveling back toward the laser resonator, eliminating back‑reflection‑induced instability and protecting fiber or solid‑state laser sources during long‑term operation.
For 1D optical detection scenarios such as spectrum acquisition, dimensional measurement and optical scanning, area array CMOS/CCD suffer redundant pixels, high cost and slow row readout speed.
Laser pump sources are the core energy input component of solid-state lasers and laser amplifiers, and their performance directly determines the output power, beam quality and service life of the entire laser system. In scenarios such as industrial processing, scientific research experiments and high-end equipment, improper pump source selection will not only result in substandard system performance, but also bring a series of problems such as rapid device degradation and high operation and maintenance costs. This article sorts out the core selection logic and key pitfalls of pump source procurement, and provides selection references based on mature, mass-produced high-reliability products to help purchasers efficiently screen suitable products.
Loading...
Name
Phone
Organization
Use Case
Database Platform