Typical Properties of YVO4 crystal

Crystal Structure

Tetragonal:   a = b = 7.119 Å    c = 6.289 Å

Growth Method  

Czochralski

Melt Point

1825  ^oC        

Density

4.22   g/cm³  

Hardness

 4 ~ 5  ( mohs)

Thermal Expansion

 a_a= 4.43 x10^-6/ ^oC                a_c= 11.37  x10^-6/ ^oC

Thermal Conductivity,

A axis 5.32 W/(m.k)              C axis = 5.10 W/(m.k)

Thermal Optic Coefficient

dh _a / dT :   8.5x10^-6/ ^oC        dh _c / dT :   3.0 x10^-6/ ^oC

Lasing wavelength

 1064 nm,   1342 nm

Stimulated emission cross-section

25 x 10 ¹⁹ cm² at 1064 nm

Fluorescent lifetime

90 ms

Absorption Coefficient

31.4 cm^-1 at  810 nM

Intrinsic Loss

0.02 cm^-1  at  1064 nm

Gain bandwidth

0.96 nm at 1064 nm

Polarized laser emission

  Pai  polarization , parallel to C axis

Diode pumped optical to optical efficiency

> 60 %

Standard Products and Specs

As - grown boules

 <100 >  or <001> ori.± 0.5^o

20 – 35  mm diameter   x      30 – 40 mm length

Doping level:  0.27 , 1.0 or 2.0 atm %  upon customer request

Standard Nd:YVO4 components

Polished  from 2  to 6 sides

3 x 3 x 1 mm                      10x10x0.5 mm

3 x 3 x 2 mm

3 x 3 x 5 mm

Optically polished parts  Specs

Dimension Tolerance : ± 0.05 mm

Orientation Tolerance : ± 0.5 ^o

Tolerance Parallelism : < 15"            Flatness:  < l/8

Surface quality:              10/5

Optical coating:

AR coating:  R < 0.2% @1064 nm        ( available upon request )

HR coating: R > 99.8% at 1064 nm , T . 95% at 808 nm