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KTP

Potassium Titanyl Phosphate (KTiOPO3 or KTP) is an excellent nonlinear optical material suitable for use in many optical systems. It has high nonlinear coefficient and stable physical property.
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Product description
  Potassium Titanyl Phosphate (KTiOPO3 or KTP) is an excellent nonlinear optical material suitable for use in many optical systems. It has high nonlinear coefficient and stable physical property. Its most popular application is as a frequency doubler utilizing the 1064nm output of a Nd:YAG laser and to generate 532nm laser. KTP’s properties also make it superior for electro-optic modulation, optical parametric generation.
After years of development, CRYSTECH has become the largest KTP manufacturer in the world.
CRYSTECH offers
● Strict quality control
● Large crystal size up to 20x20x40mm3 and maximum length of 60mm
● Quick delivery(3 weeks for polished only, 4 weeks for coated)
● Reasonable price and quantity discount
● Technical support
● AR-coating, re-polishing service.
APPLICATION:
  Due to the unique combination of its properties – high nonlinear coefficient, high damage threshold, non-hygroscopic, KTP can be used in both commercial and military lasers including medical and laboratory systems, range finders, designators and systems for use in semiconductor industry.
Its application includes:
● SHG, SFG of Nd Lasers
● Optical Parametric Generation (OPG, OPA, OPO)
● Electro-Optical modulations
● Optical waveguide for integrated NLO and E-O devices
● ØSHG, SFG of Nd lasers
   
ØOptical Parametric Generation (OPG, OPA, OPO)
  As an efficient OPO crystal pumped by the fundamental and second harmonics of a Nd:YAG or Nd:YLF laser, KTP plays an important role in parametric sources for tunable output from visible (0.6 um) to mid-IR (4.5 um). In NCPM KTP OPO pumped by 1064 nm, the signal output is around eye safe wavelength, finding applications in eye-safe devices. KTP's OPO pumped by a 1064 nm Nd-laser has generated above 66% conversion efficiency for conversion from 1064 to 2120 nm. The OPO/OPA in XY and YZ is seldom employed because of their low effective nonlinear coefficients and other limitation.
  Below figure shows the non-critical phase-matched (NCPM) X-cut KTP OPO/OPA. For pumping wavelength range from 0.7μm to 1 μm, the output can cover from 1.04μm to 1.45μm(signal) and from 2.15μm to 3.2μm(idler). More than 45% conversion efficiency was obtained with narrow output bandwidth and good beam quality.
 
ØElectro-Optical Modulation
  KTP also has promising E-O and dielectric properties that are comparable to LiNbO3. These properties make KTP extremely useful in various E-O devices.
Oven for Heating KTP crystals
  Increasing the temperature of KTP crystal can enhance the damage threshold of KTP crystal. Therefore, for high power or high power density SHG of Nd lasers, heating KTP to a certain temperature (e.g., 80——100deg) is recommended. CRYSTECH provides precision oven with temperature controller for heating KTP. A full assembly including KTP crystal, oven and temperature controller is also available.
ADVANTAGE:
● Large nonlinear coefficient
● Wide angular bandwidth and small walk off angle
● Broad temperature and spectral bandwidth
● Large electro-optical coefficient
● High damage threshold
● Nonhygroscopic, chemically and mechanically stable
Dimension Tolerance W(+/-0.1)*H(+/-0.1)*L(+0.5/-0.1)mm
Angle Tolerance +/-0.25° Perpendicularity ≤10′
Scratch/Dig 20/10 Chamfer ≤0.2mmx45°
Parallelism ≤10″ Chips ≤0.1mm
Flatness λ/10@633nm Clear Aperture ≥90%
Wavefront distortion λ/8@633nm  
Coatings C1---AR@1064(R<0.2%)&532(R<0.5%) C2---HR@1064(R>99.8%)&HT@532(T>95%) C3---AR@1064(R<0.2%)&1570(R<0.5%) C4---HR@1570(R>99.8%)&HT@1064(T>99.5%) C5---HR@1064(R>99.8%)&PR@1570(R=50,60,70%+/-2%)
Damage Threshold 500MW/cm² (1064nm, 10ns, 10Hz)

   

P/N

Type

Size(mm)

Coating

CR.KTP.060603.C001

SHG

6x6x3

AR1064&532

CR.KTP.060605.C001

SHG

6x6x5

AR1064&532

CR.KTP.070705.C001

SHG

7x7x5

AR1064&532

CR.KTP.080805.C005

SHG

8x8x5

AR1064&532

CR.KTP.090905.C001

SHG

9x9x5

AR1064&532

CR.KTP.151506.C003

SHG

15x15x6

AR1064&532

CR.KTP.040420.C004

OPO

4x4x20

AR1570&1064

CR.KTP.060620.C006

OPO

6x6x20

AR1570&1064

CR.KTP.070720.C004

OPO

7x7x20

AR1570&1064

CR.KTP.040416.C008

OPO

4x4x16

HR1570,HT1064|HR1064,PR1570

CR.KTP.050520.C009

OPO

5x5x20

HR1570,HT1064|HR1064,PR1570

 

KTP is a positive biaxial crystal, with the principal axes X, Y, and Z (nz>ny>nx) parallel to the crystallographic axes a, b, and c, respectively.

Physical Properties:  

Crystal structure Orthorhombic, space group Pna21,point group mm2
Cell parameters a=6.404Å, b=10.616Å, c=12.814Å, Z=8
Melting point Around 1172℃
Mohs hardness 5
Density 3.01 g/cm3
Color colorless
Hygroscopic susceptibility no
Thermal conductivity 0.13 W/(cm*K-1)
Thermo-optic Coefficient dnx/dT=1.1x10-5/°C, dny/dT=1.3x10-5/°C, dnz/dT=1.6x10-5/°C
Absorption coefficient <0.1%/cm @ 1064nm, <1%/cm @ 532nm
 

Optical Properties:    

Transmitting range: 350 nm - 4500 nm
SHG Phase Matchable Range 497~1800nm  (Type II)

Refractive indices:

      1064nm

       532nm

   nx        ny       nz

  1.7377   1.7453   1.8297

  1.7780   1.7886   1.8887

Sellmeier equations: (λ in μm) nx2=3.0065+0.03901/(λ2-0.04251)-0.01327λ2
ny2=3.0333+0.04154/(λ2-0.04547)-0.01408λ2
nz2=3.3134+0.05694/(λ2-0.05658)-0.01682λ2
Nonlinear optical coefficients: d31=6.5pm/v, d32=5pm/v, d33=13.7pm/v, d24=7.6pm/v, d15=6.1pm/v
Effective nonlinearity expressions deff(II)≈(d24 - d15)sin2Φsin2θ - (d15sin2Φ + d24cos2Φ)sinθ
For type II SHG of a Nd:YAG Laser at 1064nm:

PM angle:  θ=90°, φ=23.5°

Temperature Acceptance: 24°C·cm 
Spectral Acceptance: 0.56nm·cm
Angular Acceptance: 14.2mrad·cm (φ);55.3mrad·cm (θ)
Walk-off Angle: 0.55°
Electro-optic coefficients: Low frequency (pm/V)              High frequency (pm/V)
r13 9.5 8.8
r23 15.7 13.8
r33 36.3 35.0
r51 7.3 6.9
r42 9.3 8.8
Dielectric constant: εeff=13

 

Corresponding parameter set not found, please add it in property template of background
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暂未实现,敬请期待