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标题: Deqing HuaRui-optics Components Co., Ltd [打印本页]

作者: lczhy00001 时间: 2005-11-14 21:54
标题: Deqing HuaRui-optics Components Co., Ltd

LiNbO3

On its excellent optical and electrical properties, LiNbO₃ is one of the most important materials used for the field of optics and electronics, such as laser components, wafers for surface acoustic wave devices, wafers for integrated optics applications and doped LiNbO₃ crystals for nonlinear optics (MgOiNbO₃, ZnO: LiNbO₃), photo-refractive effects devices (FeiNbO₃), etc.

OPO, Frequency and Quasi-Phase-Matched (QPM) Doublers

LiNbO₃ is commonly applied as not only frequency doubler (wavelength 1 mm) but optical parameter oscillator (OPO) pumped at 1.064 mm, as well quasi-phase-matched (QPM) doubler. HROPTICS supplies laser-grade LiNbO₃ devices of (3-20) x (3-20) mm² aperture and up to 60 mm length for frequency doubler and optical parameter oscillator, with high quality, large quantity and low price. Its properties show as follows:

Basic Properties

Crystal Structure	Trigonal, point group 3m
Lattice Parameters	a=5.148Å, c=13.863Å
Density	4.64 g/cm³
Melting Point	1250 °C
Curie Point	1160 °C
Mohs Hardness	5
Dielectric Constant	e₁₁/e₀ = 85; e₃₃/e₀ = 29.5
Absorption Coefficient	~ 0.1%/cm @1064 nm
Thermal Conductivity	38 W/m/°C at 25°C
Thermal Expansion Coefficient	a₁=a₂ =2x10^-6/°C, a₃=2.2x10^-6/ °C at 25°C
Piezoelectric Strain Constant	d₂₂ = 2.04 x 10^-11 C/N, d₃₃ = 19.22 x 10^-11 C/N
Elastic Stiffness Constant	C^E₁₁ = 2.04 x 10¹¹ N/m², C^E₃₃ = 2.46 x 10¹¹ N/m²

Optical and NLO Properties

Transparency Region	3700 ~ 5000 nm
Sellmeier Equations (l in mm)	n_o² = 4.9048+0.11768/(l²-0.0475)-0.027169l² n_e² = 4.5820+0.099169/(l²-0.04443)-0.02195l²
Optical Homogeneity	Dn ~ 5x10⁵/cm²
Nonlinear Coefficients	d_eff=13.6 d₃₆(KDP) for OPO at 1064 nm d_eff =14.6 d₃₆(KDP) for SHG at 1300 nm d_eff =45.0 d₃₆(KDP) for QPM
Refractive Indexes	n_o n_e 2.220 2.146 @ 1300 nm 2.322 2.156 @ 1064 nm 2.286 2.203 @ 632.8 nm
Electro-optic Coefficients (pm/V)	Low frequency High frequency g₃₃ 32 31 g₃₁ 10 8.6 g₂₂ 6.8 3.4
Damage Threshold	250 KW/cm² at 1064 nm (10 ns)

X-CUT

76.2 diameter*0.5---1.0mm HR-LNX0305-10

Z-CUT

76.2 diameter*0.5---1.0mm HR-LNZ0305-10

Y-CUT

76.2 diameter*0.5---1.0mm HR-LNY0305-10

127.86° Y-cut,

76.2 diameter*0.50mm HR-LNY1040305

64° Y-cut,

76.2 diameter*0.5mm HR-LNY640305

Applications for Q-switch Elements

LiNbO₃ is extensively used as electro-optic modulator and Q-switch for Nd:YAG, Nd:YLF and Ti:Sapphire lasers as well as modulator for fiber optics, etc. The transverse modulation is mostly employed for LiNbO₃. If a LiNbO₃ crystal is used as Q-switch crystal, the light propagates in Z-axis and electric field applies to X-axis, the refractive retardation will be G = pLn_o³¡₂₂V/ld. MgOiNbO₃ and ZnO: LiNbO₃ crystals have similar electro-optic properties to LiNbO₃ but with higher damage threshold. The specifications of LiNbO₃ Q-Switch Elements listed as the following table:

LiNbO₃ Q-Switch Elements

Standard Dimension	9x9x25 or 10x10x20mm³ (other dimension is also available upon request)
Dimension Tolerance	X Y-axis: ± 0.1mm ; Z-axis: ± 0.3mm
Wavefront Distortion	l/4 @633nm
Orientation Accuracy	X Y-axis: 10'; Z-axis: 5'
Flatness	l/8 @632.8nm
Parallelism	10"
Scratch/Dig Code	10/5 per MIL-O-13830A
Chamfer	0.5 mm at 45º ± 5º
AR-Coating	R 0.2% @ 1064 nm
Electrodes	Gold electrode on X-faces
Extinction Ratio	400:1 @ 633 nm for f 6mm beam)

Surface Acoustic Wave (SAW) Devices

LiNbO₃ crystal is widely applied as an excellent acousto-optic material for surface acoustic wave (SAW) devices (such as filters, oscillators and resonators) and ultrasonic transducer due to its high electro-mechanical coupling factor, low acoustic transmission loss, stable physical and chemical properties.

HROPTICS can supply large quantities of LiNbO3 boules, as-cut or finished f3" wafers available up to 6,000~ 9,000 pieces per month with good quality and very low price. The basic specifications and typical properties for LiNbO3 SAW wafer are listed as following:

Bsic Specifications of LiNbO₃ SAW Wafer

Standard Dimension	f3.0² (±0.01²) x 0.51 mm (±0.05 mm)
Typical Orientation	1) 127.86° Y-cut, 2) 64° Y-cut, 3) Y-cut, 4) Z-cut
Surfaces Finish	One surface mirror polished to Ra less than 10Å, reverse surface fine ground
Bow	20 mm

Typical properties of LiNbO3 SAW Wafer

Orientation	127.86° Y-cut	Y-cut
SAW Velocity	3970 m/s	3485 m/s
Electromechanical Coupling Factor	K_s²=5.5%	K_s²=4.3%
Temperature Coeff. of Delay (TCD)	78 x 10^-6/°C	95 x 10^-6/°C
Temperature Coeff. of Velocity (TCV)	-60 x 10^-6/°C	-80 x 10^-6/°C

LiNbO₃ Wedges/Birefringent Substrates for use in fiber optics

Specifications:

Aperture	1.0 x 1.0 mm² to 4 x 4 mm²
Dimension tolerance	+/-0.05mm
Wedge Angle tolerance	+/-0.1^o
Optical axis orientation	+/-0.5^o
Flatness	l/4 @632.8 nm
Surface Quality	20-10
AR-coating	R0.2%

Standard Sizes	a) 1.25mmx1.25mmx0.25mm(top end) or 0.55mm(bottom end) b) 1.6mmx1.6mmx0.55mm
Cutting Angle	q=90^o, f=22.5^o
Wedge Angle	13^o or 15^o
Coating	Two apertures AR coated typically for ~1550nm
Quantities Available	50,000 to 70,000 per month

Waveguide Substrates

LiNbO3 crystal is the mostly used inorganic substrate for electro-optic waveguide applications.

Specifications of LiNbO3 Waveguide Substrates

Standard Dimension

1) 50x50x1 mm³ for X-cut, Y-cut, or Z-cut

2) f 3"x1 m m³ for Y-cut or Z-cut

3) Other dimension is available upon request.

Orientation Tolerance

10'

Surfaces Finish

One surface polished to better than l/2 (with mount) and free from surface defects when observed by a 50X microscope, the other face fine ground

. Magnesium Oxide Doped Lithium Niobate (MgOiNbO₃)

MgOiNbO₃ crystal is widely used for high power frequency doubling(SHG), mixing(SFG) and optical parameter oscillator(OPO). MgOiNbO₃ has similar effective nonlinear coefficients as pure LiNbO₃. But it has the advantages such as high damage threshold (over 5 GW/cm² @ 1064 nm, 12ns), noncritical phase matching (NCPM) at room temperature, excellent E-O and NLO properties, good mechanical and chemical properties compared with pure LiNbO₃.

Its Sellmeier equations (7 mol% MgO doping) are:

n_o²= 4.8762+0.115540/(l²-0.04674)-0.033119l² (l in mm)

n_e²= 4.5469+0.094779/(l²-0.04439)-0.026721l²

Over 45% and 60% of SHG efficient are obtained in pulsed and cw Nd:YAG lasers respectively, by angle tuned phase matchable SHG of Nd:YAG laser (1064 nm) and NCPM SHG of laser lasers (1053 nm) of MgOiNbO₃ at room temperature. MgOiNbO₃ is also a good crystal for high power quasi-phase-matched waveguide structure for doubler, optical parametric oscillator (OPO) and amplifier (OPA).

HROPTICS supplies the typical sizes of MgOiNbO₃ crystals - 5x5x(20-30) mm³ for OPO and frequency doubler, (20-25)x(20-25)x1 mm³ for waveguide substrates. Other sizes and AR or HR-coatings are available upon request.

. Iron Doped Lithium Niobate (FeiNbO₃)

FeiNbO₃ is a excellent photorefractive crystal with high electro-optic coefficients, high photorefractive sensitivity and diffraction efficiency without applied electric field. Therefore, FeiNbO₃ crystal will find the suitable applications in phase conjugation and holographic recording. High quality FeiNbO₃ crystal, with size as large as f3" and iron doped concentrations from 0.01 to 0.1 atm%, could be supplied by HROPTICS Some special fabrications are also available to meet customers'

作者: lczhy00001 时间: 2005-11-14 21:59

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[此贴子已经被作者于2005-11-14 14:02:19编辑过]

作者: lczhy00001 时间: 2005-11-14 22:01

激光模组用玻璃一字镜

　一字镜（棒镜）

K玻璃材料

规格:Φ1*8mm Φ2*5mm Φ２mm*6mm Φ 2.5*4mm Φ 2.9*7.7mm Φ3*5mm Φ3*6mm Φ3*7mm Φ 4*5mm Φ 4*6mm Φ4*7mm Φ4.5*7mm Φ5*5mm Φ5*6mm Φ 5*7mm Φ5*8mm Φ6*8mm Φ6*9mm Φ9*22mm Φ10*22mm Φ10*60mm Φ10*85mm Φ32*22mm Φ2.3*110mm Φ3*150mm Φ4*200mm Φ5*200mm

F玻璃材料

S玻璃材料

地线仪用柱面镜

规格：9*9*4.5mm，8*8*4mm

激光模组用六棱镜

规格：4.5*5.5*9mm

激光模组用透镜

规格：Φ5*3，Φ8*3（单件、胶合件）

激光模组用窗口片

规格：Φ6*1mm Φ8*1mm Φ10*1mm AR0.02%@635-670nm

作者: lczhy00001 时间: 2005-11-14 22:21
德清华瑞光学元件有限责任公司
Deqing Huarui optics Components Co., Ltd.
李春忠总经理
地址：浙江省德清县武康镇长虹中街333号
ADD: No.333 Changhong street(M), Wukang Town,
Deqing County, Zhejiang P.R.China　
电话(TEL)：0572-8083398 8082876传真(FAX)：0572-8083397
手机(Mobile)：13362288444 13967269976
E-mail: lczoptics@yahoo.com.cn lczoptics@hotmail.com
http://www.hroptics.com

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Basic Properties

Dielectric Constant

Optical and NLO Properties

no ne

Electro-optic Coefficients (pm/V)

Low frequency High frequency

Surface Acoustic Wave (SAW) Devices

Typical Orientation

Surfaces Finish

Bow

Orientation

LiNbO3 Wedges/Birefringent Substrates for use in fiber optics

Specifications:

Aperture

1.0 x 1.0 mm2 to 4 x 4 mm2

Dimension tolerance

+/-0.05mm

Wedge Angle tolerance

+/-0.1o

Optical axis orientation

+/-0.5o

Flatness

l/4 @632.8 nm

Surface Quality

20-10

AR-coating

R0.2%

Standard Sizes

a) 1.25mmx1.25mmx0.25mm(top end) or 0.55mm(bottom end) b) 1.6mmx1.6mmx0.55mm

Cutting Angle

q=90o, f=22.5o

Wedge Angle

13o or 15o

Coating

Two apertures AR coated typically for ~1550nm

Quantities Available

50,000 to 70,000 per month

Waveguide Substrates

n_o n_e

LiNbO₃ Wedges/Birefringent Substrates for use in fiber optics

1.0 x 1.0 mm² to 4 x 4 mm²

+/-0.1^o

+/-0.5^o

a) 1.25mmx1.25mmx0.25mm(top end) or
0.55mm(bottom end)
b) 1.6mmx1.6mmx0.55mm

q=90^o, f=22.5^o

13^o or 15^o