KTP Crystal
KTP has promising E-O and dielectric properties comparable to those of LiNbO
3, which makes it extremely useful to various E-O devices. The following Table gives the comparison of KTP and those commonly used E-O modulator materials:Material |
Phase |
Amplitude |
||||||
e |
n |
r |
k |
n7r2/e |
r |
k |
n7r2/e(pm/V)2 |
|
KTP |
15.4 |
1.8 |
35 |
31 |
6130 |
27 |
11.7 |
3650 |
LiNbO3 |
27.9 |
2.2 |
31 |
82 |
7410 |
20.1 |
42 |
3500 |
KD*P |
48 |
1.47 |
26.4 |
9 |
178 |
24 |
8 |
178 |
LiIO3 |
5.9 |
1.74 |
6.4 |
24 |
335 |
1.2 |
15 |
124 |
When these properties are combined with high damage threshold, low optical loss at high average power, wide optical bandwidth, thermal and mechanical stability, KTP crystals are expected to replace LiNbO
3 crystals as E-O modulators, especially for mode-locking diode laser pumped Nd:YAG and Nd:YLF lasers as well as Ti:Sapphire and Cr:LiSrAlF6 lasers. KTP crystal was successfully used to mode lock a diode laser pumped Nd:YLF laser at 270 MHz with pulse width of 15 ps and spectral bandwidth of 73 GHz.Copyright 1998 CASIX, Inc. All rights reserved.
Last Revised: May 19, 1999
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