Download Potassium Titanyl Phosphate - Lab I | ECEN 5606 and more Lab Reports Electrical and Electronics Engineering in PDF only on Docsity! Potassium Titanyl Phosphate (KTiOPO4, KTP) Introduction Advantages large nonlinear optical coefficients wide angular bandwidth and small walk-off angle broad temperature and spectral bandwidth high electro-optic coefficient and low dielectric constant large figure of merit nonhydroscopic, chemically and mechanically stable. Applications frequency doubling (SHG) of Nd-doped lasers for green/red output frequency mixing (SFM) of Nd laser and diode laser for blue output parametric sources (OPG, OPA and OPO) for 600 nm - 4500 nm tunable output E-O modulators, optical switches, directional couplers optical waveguides for integrated NLO and E-O devices CASTECH's advanced technique in crystal growth has produced 35x35x68 mm^3 transparent KTP bole grown with flux method. As large as 15x15x15 mm^3 and 25x25x25 mm^3 KTP devices are fabricated. Now, CASTECH provides KTP with strict quality control on optical homogeneity, transmission and scattering 1-4 weeks delivery unbeatable price and quantity discount technical support AR-coating, mounting and re-polishing services Basic Properties Structural and Physical Properties 11/5/01 5:54 AMCASTECH laser crystals Page 1 of 5http://www.castech-us.com/casktp.htm Crystal Structure Orthorhombic, space group Pna2 , point group mm21 Cell Parameters a=6.404Å, b=10.616Å, c=12.814Å, Z=8 Melting Point 1172 C incongruento Curie Point 936 Co Mohs Hardness 5 Density 3.01 g/cm3 Color colorless Hygroscopic susceptibility no Specific Heat 0.1643 cal/g Co Thermal Conductivity 0.13 W/cm/K Electrical Conductivity 3.5x10 s/cm (c-axis, 22 C, 1KHz)-8 o Nonlinear Optical Properties Phase matchable SHG range 497-1800 nm Nonlinear optical coefficients d =1.9 pm/V, d =3.5 pm/V, d =13.7 pm/V, d =3.3 pm/V, d =2.6 pm/V 13 32 33 24 15 d (II)=(d - d ) sin2(phi) sin2(theta)-{d sin (phi)+d cos (phi)} sin(phi) eff 24 15 15 2 24 2 For type II SHG of a Nd:YAG laser at 1064 nm PM angle: theta=90 , phi=23.3 o o Effective SHG coefficient: d =8.3 x d (KDP)eff 36 Angular acceptance: 20 mrad-cm Temperature acceptance: 25 C-cmo Spectral acceptance: 5.6 Å -cm Walk-off angle: 4.5 mrad (0.26 )o Optical damage threshold: > 450 MW/cm (at 1064 nm, 10 ns, 10 Hz) 2 Electro-Optic Coefficents Low frequency (pm/V) High frequency (pm/V) r13 9.5 8.8 r23 15.7 13.8 r33 9.5 8.8 r23 36.3 35.0 11/5/01 5:54 AMCASTECH laser crystals Page 2 of 5http://www.castech-us.com/casktp.htm
