what are you looking for?
KDP Potassium Dihydrogen Phosphate and KD*P or DKDP Potassium
Dideuterium Phosphate are among the most widely-used commercial NLO materials,
characterized by good UV transmission, high damage threshold, and high
birefringence, though their NLO coefficients are relatively low. They are
usually used for doubling, tripling and quadrupling of a Nd:YAG laser under the
room temperature. In addition, they are also excellent electro-optic crystals
with high electro-optic coefficients, widely used as electro-optical
modulators, such as Q-switches, Pockels Cells, etc.
Product Origin:
ChinaShipping Port:
Fuzhou, ChinaLead Time:
3-4weeks
Descriptions:
KDP Potassium Dihydrogen Phosphate and KD*P or DKDP Potassium Dideuterium Phosphate are one of the oldest used nonlinear materials. DKDP and KDP are known as analogs, though their properties differ due to DKDP deuteration. They both exhibit excellent ultraviolet transmission and high damage threshold. The nonlinearity of these crystals is relatively low, these crystals can be grown in large size. They found their application as nonlinear frequency doublers, triplers, and quandruplers of Nd-doped lasers and as Q-switch devices for Ti:Sapphire, Alexandrite, Nd-doped lasers. The main drawback is that these crystals are highly hygroscopic, therefore sealed housing and dry operating conditions have to be ensured.
Main applications:
1） Laser frequency conversion — harmonic generation for high pulse energy;
2） Electro-optical modulation;
3） Q-switching crystal for Pockels cells;
Advantages:
1) Good UV transmission;
2) High birefringence
3) High optical damage threshold;
4) High nonlinear coefficients;
5) Non-hygroscopic, chemically and mechanically stable
6) Wide working temperature range
7) Low capacitance
Basic properties
|
|
KDP |
DKDP / KD*P |
|
Chemical Formula |
KH2PO4 |
KD2PO4 |
|
Transparency Range |
200-1500nm |
200-1600nm |
|
Nonlinear Coefficients |
d36=0.44pm/V |
d36=0.40pm/V |
|
Refractive index（@1064nm） |
no=1.4938，ne=1.4599 |
no=1.4948，ne=1.4554 |
|
Electro-optical Coefficients |
r41=8.8pm/V r63=10.3pm/V |
r41=8.8pm/V r63=25pm/V |
|
Longitudinal half-wave voltage |
Vπ=7.65KV(λ=546nm) |
Vπ=2.98KV(λ=546nm) |
|
Absorptance |
0.07/cm |
0.006/cm |
|
Optical damage threshold |
＞5GW/cm2 |
＞3GW/cm2 |
|
Extinction ratio |
|
30dB |
|
Sellmeier equations of KDP (λ in μm) |
no2=2.259276+0.01008956/(λ2-0.012942625)+13.00522λ2/(λ2-400) |
|
|
Sellmeier equations of KD*P (λ in μm) |
no2=1.9575544+0.2901391λ2/(λ2-0.0281399)-0.02824391λ2+0.004977826λ4 |
|
HGO offers KDP or DKDP specifications:
|
Tolerance of cutting angle |
△θ≤±0.25°,△φ≤±0.25° |
|
Tolerance of dimension |
Dimension+0/-0.1 mm，L：±0.1mm |
|
Flatness |
λ/10 @ 632.8nm |
|
Wavefront distortion |
λ/8@ 632.8nm |
|
Surface quality |
10/5 per MIL-O-13830A |
|
Parallelism |
20″ |
|
Perpendicularity |
10′ |
|
Clear Aperture: |
> 90% |
|
Chamfer: |
< 0.1 mm @ 45° |
|
Size |
Upon customer request |
|
Coating |
AR/HR coating upon customer’s request |
|
Damage Threshold |
750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz |
|
Quality Warranty Period |
One year under proper use |
Why Choose HGO ?
HGO supplies high quality KDP and KD*P crystals for various applications. Because their polished surfaces are easier to be moistened, the user is advised to provide the dry condition (<50%) and the sealed housing for preservation. For this purpose, HGO also provides polishing and sealed housing services for the KDP-based crystals. Our engineers will serve you to select and design the best crystal, according to the laser parameters you provide.
Leave A Message
HGO grows LBO Nonlinear crystals using flux technology. LBO crystals is an excellent nonlinear crystal.For frequency doubling(SHG),tripling(THG) of Nd:YAG,Nd:YLF,Nd:YVO4 lasers, it is one of the most useful nonlinear optical materials in ultraviolet and visible laser applications.
Read More
HGO grows BBO Nonlinear crystals using flux technology. BBO crystal transparency ranges from 188 nm to 5,2 µm, which includes reasonable transparency from 3-5,2 µm for few tens µm thick crystals, while their phase-matchable range spans almost over the entire transparency range. Combined with other magnificent properties of BBO, it is favorable for numerous nonlinear parametric applications. It is worth to mention that BBO crystals have the highest nonlinearity in the UV range out of all common nonlinear crystals.
Read More
Potassium Titanyl Phosphate (KTiOPO4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidar, optical communication and industrial systems.
Read More
LiNbO3 is widely used as electro-optic modulators and Q-switches for Nd:YAG, Nd:YLF and Ti:Sapphire lasers as well as modulators for fiber optics.
Read More
Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 um wavelength band.
Read More
Optical domes are lenses with two concentric spherical surfaces. Sometimes they are being referred to as bent plan parallel plates. Consequently it is customary to define parallelism between two surfaces as the maximum thickness variation between the two surfaces.
Read More
Achromatic Lenses are used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Achromatic Lenses are ideal for a range of applications, including fluorescence microscopy, image relay, inspection, or spectroscopy. Achromatic Lenses, which are often designed by either cementing two elements together or mounting the two elements in a housing, create smaller spot sizes than comparable singlet lenses.
Read More
HGO grows BBO Nonlinear crystals using flux technology. BBO crystal transparency ranges from 188 nm to 5,2 µm, which includes reasonable transparency from 3-5,2 µm for few tens µm thick crystals, while their phase-matchable range spans almost over the entire transparency range. Combined with other magnificent properties of BBO, it is favorable for numerous nonlinear parametric applications. It is worth to mention that BBO crystals have the highest nonlinearity in the UV range out of all common nonlinear crystals.
Read More
IPv6 network supported
