United Crystals

United Crystalsについて

United Crystalsは、NLO結晶、電気光学結晶、複屈折性結晶等の製品メーカーです。これまでは主に北米・欧州市場での製品供給を行ってきましたが、日本国内でもご購入頂きます。

Non-linear Optical Crystal Overview

BBO

BBO crystals are quickly available with standard sizes with 0.1mm tolerance, ranging from 5x5x0.1mm to 5x5x5mm for 800nm SGH, 3x3x9mm for 473nm SGH, 4x4x7mm for THG @1064nm…
Custom sizes on request.
P and AR coatings available @473+237nm, 800nm+400nm, 1064+532nm, 1310+2050nm…

Optical properties:

Transmitting Range:	196nm ~ 2200nm
Refractive Indices:	@1064nm	1.6551(ne)	1.5425(ne)
	@532nm	1.6749(no)	1.5555(ne)
	@266nm	1.75711(no)	1.6146 (ne)
Sellmeier Equations:(l in µm)	No2 = 2.7359 + 0.01878 / (l2 – 0.01822) – 0.01354l2
	Ne2 = 2.3753 + 0.01224 / (l2 – 0.01667) – 0.01516l2
Therm-Optic Coefficient:(10-6/°C)	dno/dT=-9.3		dne/dT=-16.6
Absorption Coefficient:	a<0.1%/cm @1064nm
Nonlinear Optical Coefficients and Equation:	@1064nm	d11=5.8d36(KDP)	d31=0.05d11	d22<0.05d11<>/sub
	deff(I)=d31sinq + (d11cos3f – d22sin3f)cosq
	deff(II)=(d11sin3f + d22cos3q)cos2q
Half-wave voltage:	48KV(at 1064nm )
Electro-Optic Coefficients:	r11 = 2.7 pm/V, r22, r31< 0.1r11
Damage Threshold @1064nm and @532nm	5 GW/cm2 (10 ns); 10 GW/cm2 (1.3 ns);
	1 GW/cm2 (10 ns);7 GW/cm2 (250ps)

KTP

Potassium Titanyl Phosphate Single Crytal (KTiOPO4) crystals are quickly available with standard sizes with 0.1mm tolerance, ranging from 3x3x0.1mm to 5x5x7mm for 1064nm SGH, 5x5x10mm for 1950-2020nm SGH, 3x3x3 to 3x3x5mm for 1053nm SHG…
Custom sizes on demand.
AR coatings available @1053+527nm, 1064+532nm, 1534+727nm, 1+2micrometers…

Optical properties:

Transmitting Range:	350nm ~ 4500nm
Phase Matching Range:	984nm ~ 3400nm
Refractive Indices:	@1064nm	1.7377(nx)	1.7453(ny)	1.8297(nz)
	@532nm	1.7780(nx)	1.7886(ny)	1.8887(nz)
Sellmeier Equations: (l in µm)	Nx2 = 3.0065 + 0.03901 / ( l2 – 0.04251) – 0.01327l2
	Ny2 = 3.0333 + 0.04154 / ( l2 – 0.04547) – 0.01408l2
	Nz2 = 3.3134 + 0.05694 / ( l2 – 0.05658) – 0.01682l2
Therm-Optic Coefficient:(10-5/°C)	dnx/dT=1.1		dny/dT=1.3	dnz/dT=1.6
Absorption Coefficient:	a<1%/cm @1064nm and 532nm
Nonlinear Optical Coefficients and Equation:	@1064nm	d31=2.54pm/V	d32=4.35pm/V	d33=16.9pm/V
		d24=3.64pm/V	d15=1.91pm/V
	deff(II)=(d24-d15)sin2f sin2q – (d15sin2f +d24cos2q )sinq
Electro-optic coefficients:	Low Frequency(pm/V)		High Frequency(pm/V)
r13	9.5		8.8
r23	15.7		13.8
r33	36.3		35
r51	7.3		6.9
r42	9.3		8.8
Dielectric constant:	eeff=13

LBO, CLBO

Lithium triborate (LiB3O5) is available with custom sizes and AR coating on request.

Optical properties:

Transmitting Range:	160nm ~ 2300nm
Phase Matching Range:	550 to 3000nm (I), 790nm ~ 2200nm (II)
Refractive Indices:	@1064nm	1.5648(nx=b)	1.5904(ny=c)	1.6053(nz=a)
	@532nm	1.5785 (nx=b)	1.6065(ny=c)	1.6212 (nz=a)
Sellmeier Equations:(l in µm)	nx2 = 2.454140+0.011249/(l2-0.011350)-0.014591l2-6.60×10-5l4
	ny2 = 2.539070+0.012711/( l2-0.012523)-0.018540l2+2.00×10-4l4
	nz2 = 2.586179+0.013099/( l2-0.011893)-0.017968l2-2.26×10-4l4
Damage Threshold:	25GW/cm2 at 1.064um, 0.1ns pulse, 2.3J
Absorption Coefficient:	a<0.1%/cm @1064nm
Nonlinear Optical Coefficients (pm/V) and Equation:	@1064nm	d31=d15=0.85	d32=d24=-0.67	d33=0.04
	deff(I, in XY plane) = d24cosf
	deff (I, in XY plane) = d15cos2q + d24sin2q
	deff(II, in YZ plane) = d15cosq
	deff(II, in XZ plane) = d15cos2q + d24sin2q

LiNbO₃, LiTaO₃

Lithium Niobate Crystal (LiNbO₃) are available from minimal size 1.25×1.25x40mm on.
AR coatings and Cr, Gold Electrode coatings on request.
MgO doped LiNbO₃ available too.

Optical properties:

Transmitting Range:	400nm~5000nm
Transmittance:	better than 68% at 633nm
Refractive Indices:	@1064nm	2.232(no)	2.156(ne)
	@808nm	2.2542(no)	2.1750(ne)
	@532nm	2.3232(no)	2.2342(ne)
Sellmeier Equations: (l in µm)	No2 = 4.9048 + 0.11768 / (l2 – 0.04750) – 0.027169l2
	Ne2 = 4.5820 + 0.099169 / ( l2 – 0.04443) – 0.021950l2
NLO Coefficient: (p/m/V,1064nm)	d31=-4.5	d33=-0.27	d22=2.1
E-O Coefficient: (pm/V, 633nm)	d33=31	r31=9	r22=3.4

KDP, DKDP, ADP

Potassium Dihydrogen Phosphate (KH2PO4), isotopic Deuterated (KD2PO4) and Ammonium Dihydrogen Phosphate (NH4H2PO4) crystals are available from minimal size 5x5x0.1mm on.
AR coating on request.

Optical properties:

Optical Properties:
Crystal		DKDP(KD*P)	KDP	ADP
Transmitting Range(nm):		200~2150	180~1550	180~1500
Absorption(%/cm):		0.5	3	–
Nonlinear Optical Coefficient (pm/V):		0.4	0.43	0.52
Damage Threshold: (GW/cm2 @1064nm)		5	5	6
Refractive Indices:	@1064nm	no=1.4931	no=1.4942	no=1.5071
		ne=1.4583	ne=1.4603	ne=1.4685
	@532nm	no=1.5074	no=1.5129	no=1.5280
		ne=1.4683	ne=1.4709	ne=1.4819
	@355nm	no=1.5257	no=1.5317	no=1.5487
		ne=1.4833	ne=1.4846	ne=1.4994
	@266nm	no=1.5539	no=1.5599	no=1.5797
		ne=1.5071	ne=1.5105	ne=1.5261
Sellmeier Equations: (l in µm)		N2 = A + B / (l2 – C) + Dl2/(l2– E)
A	no	2.2409	2.2576	2.3041
	ne	2.126	2.1295	2.1643
B	no	0.0097	0.0101	0.0111
	ne	0.0086	0.0097	0.0097
C	no	0.0156	0.0142	0.0133
	ne	0.012	0.0014	0.0129
D	no	2.247	1.7623	15.1086
	ne	0.7844	0.758	5.8057
E	no	126.9205	57.8984	400
	ne	123.4032	127.0535	400

 

Ultra-thin flakes

Ultra-short pulse devices are available for BBO (thickness down to 5microns) and KDP (thickness down to 100microns). Custom sizes on request.

 

LiIO3

Lithium Iodate crystals are available from minimal size 5x5x0.1mm on.
AR coating on request.

 

AgGaS2, AgGaSe2

Size and AR coating on request.

 

KNbO3

Available from minimal size 5x5x0.1mm on.
AR coating on request.