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ND ND YAG LASER ROD ND YAG sapphire Laser

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Nonlinear Crystal KTA Crystal

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Description

Nonlinear Crystal KTA Crystal

Potassium titanyl arsenate (KTiOAsO4), potassium titanate arsenate is an excellent nonlinear optical crystal for optical parametric oscillation (OPO). KTA is very reliable for OPO equipment. The tunable laser radiation energy conversion efficiency of solid-state laser can reach more than 50%. In addition, KTA has a very high damage threshold. Compared with KTP, KTA crystal has greater nonlinear optical and electro-optic coefficients and less absorption in the 3.0-4.0um band.

Basic characteristics:
1. Large nonlinear optical coefficient and large electro-optic coefficient
2. Wide receiving angle and small departure angle
3. It has a wide temperature and spectral range
4. Low dielectric constant and ionic conductivity (much less than that of KTP)
5. High damage threshold
6. 3.0-4.0um band has less absorption
7. Can withstand higher power density

Specification

Dimensional tolerance	(W±0.1mm)×(H±0.1mm)×(L+0.5/-0.1mm) (L≥2.5mm)
Dimensional tolerance	(W±0.1mm)×(H±0.1mm)×(L+0.1/-0.1mm) (L<2.5mm)
Angular tolerance	Δθ ≤ 0.25° Δφ ≤ 0.25°
Through caliber	90% of central area
Inverted edge	≤ 0.2mm@45°
Chamfer	≤ 0.1mm
Anti loss threshold	>0.5 for 1064nm,TEM00,10ns,10Hz(AR-coated)
[GW/cm2 ]	>0.3 for 532nm,TEM00,10ns,10Hz(AR-coated)
Flatness	< λ/8@633nm
Parallelism	< 10"
Verticality	≤ 5'
Finish [S / D]	< 10/5
Wavefront distortion	< λ/8@633nm
Internal quality	Under 50MW green laser, there is no visible light path in the crystal
Defects liability period	a year

Basic properties

crystal structure	The orthorhombic system, point groupmm2
Lattice parameters	a=13.125Å, b=6.5716Å, c=10.786Å
melting point	1130 ˚C
Mohs hardness	near 5
density	3.454g/cm3
thermal conductivity	K1:1.8W/m/K; K2: 1.9W/m/K; K3: 2.1W/m/K
Transmission range	350-5300nm
absorption coefficient	@ 1064 nm<0.05%/cm
	@ 1533 nm<0.05%/cm
	@ 3475 nm<5%/cm
NLO (pm/V)polarizability	d31 = 2.76, d32 = 4.74, d33 = 18.5 , d15 = 2.3, d24 = 3.2
Sellmeier equation Ni2=Ai+Biλ2/(λ2-Ci2)-Diλ2 (λ in μm)	Refractive index	A	B	C	D
	nx	1.90713	1.23522	0.19692	0.01025
	ny	2.15912	1.00099	0.21844	0.01096
	nz	2.14768	1.29559	0.22719	0.01436
Electro optic constant (PM / V) (low frequency)	ｒ33=37.5；ｒ23=15.4；ｒ13=11.5
SHG phase-matching range	1083-3789nm

Product application
Applications: optical parametric oscillator, colored glass, solid-state laser, ferroelectric thin film

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