1.Frequency Doubling (SHG) of Nd-doped Lasers for Green /Red Output; 2.Frequency Mixing (SFM) of Nd Laser and Diode Laser for Blue Output; 3.Parametric Sources (OPG,OPA and OPO) for 0.6¦Ìm-4.5¦Ìm Tunable Output; 4.E-O Modulators , Optical Switches , Directional Couplers; 5.Optical Waveguides for Integrated NLO and E-O Devices;
1.Structural and Physical Properties
Chemical formula
KTiOPO4
Crystal Structure
Orthorhombic, Point group mm2
Cell Parameters
a=6.420 Å, b=10.604 Å, c=12.809 Å, z=8
Melting Point
1172¡æ Incongruent
Curie point
936¡æ
Mohs Hardness
¡Ö5.5
Density
2.945g/cm3
Linear Absorption Coefficients
¦Á<0.001cm-1 @ ¦Ë=1064nm or 532nm
Hygroscopic Susceptibility
no
Relative Dielectric Constant
¦Åeff=13
Specific heat
0.1643cal/g.¡æ
Electrical Conductivity
3.5¡Á10 -8s/cm(c-axis,22¡æ,1KHz)
Thermal Conductivity
13W/m/k
2.Applications for OPG,OPA and 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¦Ìm)to mid-1R(4.5¦Ìm).The phase-matching angles and effective NLO coefficient for OPO/OPA pumped at 532nm and 1064nm in XZ plane are showed as following figures . NCPM KTP OPO pumped by 1064nm , the signal output is around eye safe wavelength , find applications in eye-safe devices . The OPO/OPA in XY and YZ is seldom employed because of their low effective nonlinear coefficients and other limitation.
3.KTP's Specifications
Transmitting wavefront distortion
<Lambda/8@633nm
Dimension tolerance
¡À0.1mm
Flatness
< Lambda/8@633nm
Perpendicularity
<5 arc minutes
Parallelism
<15 arc seconds
Suface Quality
10/5 Scratch/Dig Per Mil-O-13830A
Angle tolerance
Theta<¡À 0.5¡ã,phi<¡À0.5¡ã
Coating
AR R<0.2%@1064/532nm
Quality Warranty Period: one year under proper use. one year under proper use.
S-KTP (Super High Quality KTP)
S-KTP is an improved KTP.it has not only all of the KTP excellent properties,but also enhance the general KTP role. expressly in the aspect of the damage threshold resistance and the conversion of laser frequency is higher than KTP.
1.Main properties of SKTP Compares with KTP
S-KTP are able to reduce and stay the chance and time of the gray track¡£Our high quality SKTP is from stable growing technology and high purity materal ¡£S-KTP is made of the accumulation of symmetrical molecule¡£
In the period of S-KTP test ,we don¡¯t find the evidence of Ca Mg Ni Co Si Nd Au etc element.
