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Offer
From Non Premium Member |
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Type: |
Sell |
| Subject: |
KTP crystal |
| Description: |
Potassium Titanyl Phosphate (KTiOPO4 or KTP)
Advantages:
Large Nonlinear Optical (NLO) Coefficients
Wide Angular Bandwidth and Small Walk-off Angle
Broad Temperature and Spectral Bandwidth
High Electro-Optic (E-O) Coefficient and Low Dielectric Constant
Large Figure of Merit for an Optical Waveguide Modulator
Nonhygroscopic, Good Chemical and Mechanical Properties
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 0.6mm-4.5mm Tunable Output.
E-O Modulators, Optical Switches, Directional Couplers.
Optical Waveguides for Integrated NLO and E-O Devices.
DND Provides:
Standard size of KTP crystal for DPSS application;
Strict Quality Control;
2 - 3 Weeks Delivery;
Unbeatable Price and Special OEM Discount;
Free Technical Support;
AR-Coating, Mounting and Re-polishing Service;
Mass Production to Support Industrial and Commercial Applications;
New: Precision Oven εt Temperature Controller for Heating KTP.
Basic Properties
1. Structural and Physical Properties
Crystal Structure Orthorhombic, point group mm2
Cell Parameters a = 6.404Å, b = 10.616Å, c = 12.814Å Z = 8
Melting Point 1172 oC Incongruent
Curie point 936 oC
Mohs Hardness » 5.0
Density 3.01g/cm3
Linear Absorption Coefficients a <0.001 cm-1 @ l =1064 nm or 532 nm
Hygroscopic Susceptibility no
Relative Dielectric Constant eeff=13
Specific heat 0.1643 cal/g.oC
Electrical conductivity 3.5x10-8 s/cm (c-axis, 22oC, 1KHz)
Thermal Conductivity 13W/m/K
2. Linear Optical Properties
Transparency Range:
350 - 4500 nm, See Transparency Curve
KTP Transparency Curve
Refractive Indices:
Wavelength nx ny nz
1064 nm 1.7377 1.7453 1.8297
532 nm 1.7780 1.7886 1.8887
Therm-Optic Coefficients:
dnx/dT=1.1x10-5/oC
dny/dT=1.3x10-5/oC
dnz/dT=1.6x10-5/oC
Sellmeier Equations:
n2x=3.0065+0.03901/(l2-0.04251)-0.01327l2
n2y=3.0333+0.04154/(l2-0.04547)-0.01408l2
n2z=3.3134+0.05694/(l2-0.05658)-0.01682l2
3. NonLinear Optical Properties
Phase-Matchable Output Range: 492- 1700 nm
NLO Coefficients:
d31=2.54pm/V, d32=4.35pm/V, d33=16.9pm/V
d24=3.64pm/V, d15=1.91pm/V at 1064 nm
deff(II)» (d24 - d15)sin2fsin2q - (d15sin2f + d24cos2f)sinq
Electro-Optic Coefficients: Low Frequency (pm/V) High Frequency(pm/V)
g13 9.5 8.8
g23 15.7 13.8
g33 36.3 35.0
g51 7.3 6.99
g42 9.3 8.8
Applications for SHG and SFG of Nd: lasers
KTP is the most commonly used material for frequency doubling of Nd: YAG lasers and other Nd-doped lasers, particularly at the low or medium power density. The following Table lists the major NLO properties of KTP for frequency-doubling of Nd: YAG laser.
PM angle q=90o, f=23.5o,
where q & f are polar angles referring to Z and X.
Effective SHG coefficient deff » 8.3xd36(KDP)
Angular acceptance 20 mrad-cm
Temperature acceptance 25oC-cm
Spectral acceptance 5.6 Å-cm.
Walk-off angle 4.5mrad (0.26o)
Optical damage threshold > 450MW/cm2, (@ 1.06mm, 10ns, 10Hz)
To date, extra- and intra-cavity frequency doubled Nd: lasers using KTP have become a preferred green laser source for many R&D, medical, industrial and commercial applications. By using extracavity KTP SHG, over 80% conversion efficiency and 700mJ green laser were obtained with a 900 mJ jection-seeded Q-switched Nd: YAG laser.
Type II SHG in XY Plane Type II SHG in XZ Plane
Applied to diode-pumped Nd: laser, KTP is a basic NLO crystal for the construction of compact visible solid state laser systems. Recent advances in intracavity-doubled Nd: YVO4 and Nd: YAG lasers have increased the demand for compact green lasers used in display, construction, optical disk and laser printer. Over 200 mw TEM00 green outputs are available from LD pumped Nd: YVO4 and Nd: YAG lasers and 3 W TEM00, mode-locked green laser was generated by intracavity SHG in a 5 |
| Placement Date: |
Jan 23, 2012 |
| Expiration Date: |
Jan 22, 2013 |
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