KTP

KTP has promising E-O and dielectric properties comparable to those of LiNbO₃, which makes it extremely useful to various E-O devices.

The following table gives the comparison of KTP and thos commonly used E-O modulator materials:

Material			Phase			Amplitude
	ε	n	r pm/V	k 10 ^-6 /°C	n ⁷ r ² / ε (pm/V) ²	r pm/V	k 10^-6/°C	n ⁷ r ² / ε (pm/V) ²
KTP	15.4	1.80	35.0	31	6130	27.0	11.7	3650
LiNbO ₃	27.9	2.20	31.0	82	7410	20.1	42	3500
KD*P	48.0	1.47	26.4	9	178	24.0	8	178
LiIO ₃	5.9	1.47	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 LiNbO₃crystals as E-O modulators, especially for mode-locking diode laser pumped Nd:YAG and Nd:YLF lasers as well as Ti:Sapphire and Cr:LiSrAlF 6 lasers.

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