RTP which has only recently become commercially available is the material of choice for many NLO and electro-optic applications. Its high optical damage threshold makes it especially useful in high power SHG and OPO applications. RTPs high electrical
RTP, which has only recently become commercially available, is the material of choice for many NLO and electro-optic applications. Its high optical damage threshold makes it especially useful in high power SHG and OPO applications. RTP’s high electrical resistivity is important for many electro-optic applications, and in the production of Periodically Poled RTP elements.
RTP vs. KTP Comparison Chart
| Property | KTP | RTP |
|---|---|---|
| Phase matchable range (nm) | 980-1080 | 1050-1140 |
| Nonlinear coefficients (pm/V) | ||
| d33 | 16.9 | 17.1 |
| d31 | 2.5 | 3.3 |
| d32 | 4.4 | 4.1 |
| deff | 3.34 | 2.45 |
| Phase matching angle (deg) | 22-25 | 58 |
| Walk-off angle (deg) | 0.26 | 0.4 |
| Angular acceptance (mrad cm) | 20 | 20 |
| Temperature acceptance (°C cm) | 25 | 40 |
| Transparency range (nm) | 350-4500 | 350-4500 |
| Other Properties | ||
| Wavelength of noncritical OPO 1064nm (nm) | 1570/3300 | 1600/3200 |
| Electro optical coefficients (pm/V) | ||
| r33 | 36.3 | 39.6 |
| r13 | 9.5 | 12.5 |
| r23 | 15.7 | 17.1 |
| Dielectric constant εeff | 13 | 13 |
| Optical damage ratio (to KTP) | 1 | 1.8 |
| Electrical conductivity along Z axis (Ω-1 cm-1) | 10-6-10-7 | 10-11-10-12 |
| Pyroelectric coefficient (C/cm2 K) | 7 x 10-9 | 4 x 10-9 |
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