Potassium Dideuterium Phosphate and its Isomorphs - KD*P (DKDP) Crystals
Applications: • Laser frequency conversion – harmonic generation for high pulse energy, low repetition (<100 Hz) rate lasers; • Electro-optical modulation; • Q-switching crystal for Pockels… Read more →
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Product
Width
12 mm - 15 mm · 2 values
Any
mm
mm
Thickness
13 mm - 20 mm · 2 values
Any
mm
mm
Applications
Any
Theta Angle
53.5 Deg - 59.3 Deg · 2 values
Any
Deg
Deg
Surface 1, Wavelength 1
Wavelength
532 nm - 1064 nm · 2 values
Any
nm
nm
4
catalog variants — refine the spec to narrow it down.
| SKU | Width | Thickness | Applications | Pump Wavelength | Product Type | Theta Angle | Coating | Wavelength | |
|---|---|---|---|---|---|---|---|---|---|
| DKDP-402 | 15 mm | 13 mm | SHG | 1064 nm - 1064 nm | T2 | 53.5 Deg | AR | 532 nm - 532 nm |
Out of stock
Ships in: 62–65 calendar days
$1,068
|
| DKDP-403 | 12 mm | 20 mm | THG | 1064 nm - 1064 nm | T2 | 59.3 Deg | AR | 532 nm - 532 nm |
Out of stock
Ships in: 62–65 calendar days
$996
|
| DKDP-405 | 15 mm | 20 mm | SHG | 1064 nm - 1064 nm | T2 | 53.5 Deg | AR | 1064 nm - 1064 nm |
Out of stock
Ships in: 62–65 calendar days
$1,140
|
| DKDP-406 | 15 mm | 20 mm | THG | 1064 nm - 1064 nm | T2 | 59.3 Deg | AR | 1064 nm - 1064 nm |
3 in stock
Ships in: 2–5 calendar days
$1,140
|
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Specifications
| Shape Type | Square |
| Width Upper Tolerance | 0.1 mm |
| Width Lower Tolerance | -0.1 mm |
| Height Upper Tolerance | 0.1 mm |
| Height Lower Tolerance | -0.1 mm |
| Pump Wavelength | 1064 nm - 1064 nm |
| Material Type | Crystalline Material |
| Material | DKDP |
| Product Type | T2 |
| Theta Angle Tolerance | 0.5 Deg |
| Phi Angle | 0 Deg |
| Phi Angle Tolerance | 0.5 Deg |
| TWD, fringes @633 nm | -(0.5) |
| Parallelism, angle | 0 deg 0 min 0 sec - 0 deg 0 min 30 sec |
Surface 1
| Surface Shape | Plano |
| Surface quality, grind or polish | Polished |
| Power and Irregularity, fringes @633 nm | -(0.5) |
| Clear Aperture, % | 90 % - 100 % |
Surface 1, Wavelength 1
| Coating | AR |
| AOI (angle of incidence) | 0 deg 0 min 0 sec - 0 deg 0 min 0 sec |
Surface 2
| Surface Shape | Plano |
| Surface quality, grind or polish | Polished |
| Power and Irregularity, fringes @633 nm | -(0.5) |
| Clear Aperture, % | 90 % - 100 % |
Surface 2, Wavelength 1
| Coating | AR |
| AOI (angle of incidence) | 0 deg 0 min 0 sec - 0 deg 0 min 0 sec |
Side Surface 1
| Perpendicularity | 0 deg 0 min 0 sec - 0 deg 5 min 0 sec |
Description
Applications:
- Laser frequency conversion – harmonic generation for high pulse energy, low repetition (<100 Hz) rate lasers;
- Electro-optical modulation;
- Q-switching crystal for Pockels cells;
Electro-Optical/Q-switching applications:
- highly deuterated D>96% electro-optic (e/o) crystal - DKDP for Q-switching application;
- Standard dimensions of electro-optic (e/o) DKDP crystals for Q-switching are cylinders dia 9 x 20 mm and dia 12 x 24 mm however manufacturing of custom size and rectangular shape crystals is available;
- Gold evaporated or silver paste electrodes are available; Dielectric thin film AR coatings for specified laser wavelengths are available;
- Typical quarter wave voltage 3.4 kV at 1064 nm; Typical contrast ratio between crossed polarizers better than 1:2000;
- Damage threshold of AR coated DKDP surface >5 J/cm2 at 1064 nm, 10 ns pulses.
Frequency conversion applications:
- DKDP crystals are used for second harmonic generation of high pulse energy low repetition rate (<100Hz) Q-switched and mode-locked Nd:YAG lasers. Cut angle of crystal for operation at room temperature is 36.6 deg for Type 1 phase matching and 53.7 deg for Type 2 phase matching.
- DKDP crystals are used for third harmonic generation of high pulse energy Q-switched and mode-locked Nd:YAG lasers via sum frequency generation. Cut angle of crystal for operation at room temperature is 59.3 deg for Type 2 phase matching.
- Type 1 DKDP crystals with non-critical cut angle theta=90 deg are used for fourth harmonic generation (532nm → 266nm) of high pulse energy Q-switched and mode-locked Nd:YAG lasers. Crystal must be heated at ~50 deg C temperature to match NCPM conditions.
- Type 1 KDP crystal with close to non-critical cut angle theta=76.5 deg is used for fourth harmonic generation (532nm → 266nm) of high pulse energy Q-switched and mode-locked Nd:YAG lasers. KDP crystal has lower absorption at UV wavelengths comparing to DKDP.
- KDP thin crystals are used for second harmonic generation of Ti:Sapphire laser radiation or pulse duration measurement in single shot autocorrelators. KDP possesses ~2.4 times larger spectral acceptance and correspondingly smaller group velocity mismatch comparing to BBO crystal for SHG of 800 nm, what sometime is very critical parameter for femtosecond wide spectrum pulses.
- KDP crystals can be supplied by Eksma Optics of aperture up to dia 80 mm. Actually KDP remains the only solution for harmonic generation of very high intensity femtosecond Ti:Sapphire lasers featuring sub-tera Watt or tera Watt peak power pulses in large >30 mm diameter beams.
