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NLO Crystals Properties


NLO Crystals Structural and Physical Properties
 Crystals GTR-KTP BBO LBO KTA BIBO LiNbO3 KD*P AgGaS2 RTP
Crystal stru. Orthor Trigonal Orthor Orthor Monoclinic Trigonal Tetragonal Tetragonal Orthor
Space group Pna21 R3c Pna21 Pna21   R3C     Pna21
Point group mm2   mm2 mm2 mm2 3m 42m 42 m Mm2
Cell parameters a=6.404Å
b=10.616Å
c=12.814Å
Z=8
a = b =
12.532 Å
c = 12.717Å
Z=6
a=8.4473 Å 
b=7.3788 Å 
c=5.1395 Å 
Z=2
a=13.125 Å
b=6.5716 Å
c=10.786 Å
a = 7.116 Å
b = 4.993 Å
c = 6.508 Å
Z =2
a=5.148Å 
c=13.863Å
  a = 12.96 Å
b= 10.56 Å
c =6.49 Å
Melt point 1172 ℃ 1095+ 5 ℃ 834 ℃ 1130±5 ℃ 726 ℃ 1253 ℃   997 ℃ ~ 1000 ℃
Curie point   925+ 5 ℃   880 ℃   1140 ℃     ~810 ℃
Mohs hardness 5 4 6 5 5 - 5.5 5 2.5   ~5
Density 3.01 g/cm3   3.85 g/cm3 2.47 g/cm3 3.454 g/cm3 5.033 g/cm3 4.64 g/cm3 2.355 g/cm3 4.56 g/cm3 3.6 g/cm3
Thermal
expansion
coefficients:
(/k)
  a,4 x 10-6 ;
c, 36 x 10-6
X:10.8x10-5
Y:-8.8x10-6
Z:3.4x10-6
  X:4.8x10-5
Y:4.4x10-6
Z:-2.69x10-5
//a2.0x10-6
//c16.7x10-6
1.9x10-5 ⊥z
4.4x10-5 //z
28.5x10-6 //a
-18.7 x10-6//c
a1=1.01x10-6
a2=1.37x10-6
a3=-4.17x10-6
Hygroscopic
susceptibility
No A Little A Little No No No Yes No No
Thermal
conductivity
W/m/K
13 c, 1.2;
//c, 1.6
3.5 k1=1.8,
k2=1.9,
k3=2.1
  38 1.9 ⊥z
2.1 // z
1.5 ⊥c
1.4 //c
 
Therm-optic
coefficients:
(dn/dT, / C,)
X:1.1x10-5
Y:1.3x10-5
Z:1.6x10-5
o:
-9.3 x 10-6
e:
-16.6 x 10-6
X: -1.8x10-6
Y:-13.6x10-6
Z:(-6.3-2.1)
x 10-6
    o:
-0.874x10-6
e:
39.073x10-6
     

NLO Crystals Optical Properties
Crystals GTR-KTP BBO LBO KTA BIBO LiNbO3 KD*P AgGaS2 RTP
T range 350– 4500nm 189-3500 nm 155-3200nm 350-5300nm 286- 2500 nm 420nm-5200
nm
200-1600n
m
0.5÷12 m 350~4500 nm
SHG range: 1000-1800nm 409-3400nm 554-2600nm 1075-1134nm 574-2480nm 1064-3700nm 532-1498nm   1038-3100
Nonlinear
optical
coefficients:
(pm/V)
d31=6.5
d32=5
d33=13.7
d24=7.6
d15=6.1
d11 = 2.2
d31 = 0.08
d22 < 0.05
x d11
d31 =1.05
d32 = -0.98
d 33 =0.05
  d12=d14=2.3,
d25=d36=2.4,
d11=2.53,
d13=-1.3,
d35=-0.9,
d26=2.8
d33 = 34.4
d31 = d15 =
5.95
d22 = 3.07
d36=0.40 d36 = 13 d15 = 2.0
d24 = 3.6
d33 = 8.3
Effective
nonlinearity
expressions
deff(II)=(d24
-d15)sin2φ
sin2θ-(d15
sin2θ+d24
cos2φ)sin2θ
d ooe= d31
sinθ+(d11
cos3φ -d22
sin3φ)cosθ
 
deoe= (d11
sin3φ+ d22
cos3φ)cos2θ
d ooe =d 32
cosφ(in XY
plane)
 
doeo =d 31
cosθ (in YZ
plane)
deff(II)=
(d24-d15)
sin2φsin2θ
-(d15sin2θ
+d24cos2φ)
sin2θ
  dooe= d31
sinθ - d22
cosθ

deoe= d22
cos3φ)
cos2θ
dooe= d36
sinθsin2φ
 
deoe= d36
sin2θcos2φ

 
dooe= d36
sinθsin2φ
 
deoe= d36
sin2θcos2φ

 
deff(II)=(d24
-d15)sin2φ
sin2θ-(d15
sin2θ+d24
cos2φ)sin2θ
Electro-optic
coefficients:
(pm/V)
13 =9.5
23 =15.7
33 =36.3
42 =7.3
51 =9.3
Y11 = 2.7
Y22, Y31 <
0.1 Y11
  Y13=11.5
Y23=15.4
Y33=37.5
  YT33= 32,
YT31 =10 ,
YS31=8.6
YT22 = 6.8,
YS22=3.4
r41=8.8
r63=25
  Y13=10.6
Y23=12.5
Y33=38.5
Ab.coef.@1064 α<50ppm α<1000ppm α<50ppm α<1000ppm α<1000ppm α<1000ppm α<1000ppm α< 0.09/cm α<500ppm
N @ 1064nm nx=1.7377
ny=1.7453
nz=1.8297
ne = 1.5425,
no = 1.6551
nx= 1.5656,
ny= 1.5905,
nz=1.6055
nx=1.782
ny=1.790,
nz=1.868
n1=1.9166
n2=1.9166
n3=1.7835
Ne = 2.156,
no = 2.232
no=1.4948,
ne=1.4554
no= 2.4508
ne= 2.3966
nx=1.7424
ny=1.8211
nz=1.7905
LDT (10 ns,
1064nm)
8J/cm^2 13J/cm^2 25J/cm^2 8J/cm^2 3J/cm^2 2J/cm^2 10J/cm^2 5J @10.6 m 8J/cm^2