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Non-linear Crystal 3-Methyl-4-Nitropyridine-1-Oxide (C6H6O3N2 or POM)
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Lithium Tetraborate
Non-linear organic single crystal 3-Methyl-4-Nitropyridine-1-Oxide (C6H6O3N2 or POM). The experimental data evidences that POM is a promising material for a pico- and femtosecond optics in the near IR: non-linear optical coefficient 15 times higher than that of KDP, small phase matching hall width (5 angular min /cm) and dispersion (0.5 angular min A). POM is biaxial positive crystal: 2V = 69° at 532 nm.

APPLICATIONS:
• Second harmonic generation from low-energy and diode lasers with wavelength of 1.06, 1.30 and 1.55 µm fundamental      radiation
• Parametric amplification and light generation in the range of 0.8 - 2.0 µm
• Correlation measurement of ultra-short laser pulse duration

Literature:
 • Boomadevi S.; Mittal H.P.; Dhansekaran R. Synthesis, crystal growth and characterization of 3-methyl 4-nitropyridine 1-oxide (POM) single crystals. Journal of Crystal Growth 15 January 2004, vol. 261, no. 1, pp. 55-62(8)
 • Rainer Glaser, Grace Shiahuy Chen. Electronic Structure Analysis of the Nonlinear Optical Materials 4-Nitro-pyridine N-oxide (NPO) and 3-Methyl-4-nitropyridine N-oxide (POM). Chem. Mater. 1997, 9, 28-35
MAIN PROPERTIES:

Transparency range, nm 440 - 2300
Symmetry orthorhombic
Point group 222
Lattice parameters, Å a = 21.359; b = 6.111; c = 5.132
Density, g/cm3 1.55
Non-linear coefficient, pm/V d = 9.7
Acousto-optical properties, MKS 5.4 x 10-13
Absorption coefficients, cm-1
1064 nm 0.05
532 nm 0.2
Refractive indexes:
at 1064 nm nx = 1.625; ny = 1.663; nz = 1.829
at 532 nm nx = 1.660; ny = 1.75; nz = 1.997
Conversion efficiency, % 20 (1.32 µm, 10 ns, 10 MW/cm2, L = 4 mm)
25 (1.064 µm, 20 ns, 50 mJ)
Optical damage threshold, GW/cm2
1060 nm, 15 ns 2
530 nm, 15 ns 0.075
530 nm, 25 ps 270
Chemical properties slightly volatile

We supply POM optical elements made according to customers' order.

I N Q U I R Y    F O R M :

Material:
Quantity of elements:
Application:
For example: SHG@1064; SFG@800+267->200; DFG@780-842->10600; OPO@355->460÷560+960÷1150; etc.
polished sites:

BLOCK    or  BLOCK
  a-b b-c a-c
or d  
Type & angles:
  I    II         angles:  theta ° , phi °
Dimensions/Tolerances:
 For example:
10.0 +/- 0.1
Coating:

For example: p-coating, ARC s1/s2 1064 R<0.25%; ARC s1/s2 1064 R<0.25%+532<0.5%;
BBAR s1/s2 1064 R<1%+3÷10<5% etc.
a = mm;
c = mm 		b     = mm or
dia. = mm;
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comments, add. requirements etc.
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