Nd:YCOB
Encyclopedia
Nd-doped YCOB is a nonlinear optical
Nonlinear optics
Nonlinear optics is the branch of optics that describes the behavior of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light...

 crystal, which is commonly used as an active laser medium
Active laser medium
The active laser medium is the source of optical gain within a laser. The gain results from the stimulated emission of electronic or molecular transitions to a lower energy state from a higher energy state...

. It can be grown from a melt by the Czochralski technique. It belongs to the monoclinic system
Monoclinic crystal system
In crystallography, the monoclinic crystal system is one of the 7 lattice point groups. A crystal system is described by three vectors. In the monoclinic system, the crystal is described by vectors of unequal length, as in the orthorhombic system. They form a rectangular prism with a...

 with space group Cs2-Cm. Each neodymium
Neodymium
Neodymium is a chemical element with the symbol Nd and atomic number 60. It is a soft silvery metal that tarnishes in air. Neodymium was discovered in 1885 by the Austrian chemist Carl Auer von Welsbach. It is present in significant quantities in the ore minerals monazite and bastnäsite...

 ion replaces a yttrium
Yttrium
Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and it has often been classified as a "rare earth element". Yttrium is almost always found combined with the lanthanides in rare earth minerals and is...

 ion in the YCOB crystal structure.

Parameters in the Sellmeier equation

nx ny nz
A 2.78232 2.88739 2.92685
B 0.01120 0.01223 0.01474
C 0.08990 0.08855 0.07466
D 7.2561×10-5 6.1142×10-5 5.2148×10-5

Further reading

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