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Ytterbium laser glassYb3+ doped glass materials are desirable for generation of ultrashort pulse and as tunable laser sources because of their broad absorption and emission bandwidths.

Bluebean Optical mainly offers two types of Yb3+ doped glasses-YP1 and YB1.


YP1 glass: is a Yb3+ doped phosphate laser glass. This glass has long lifetime and nearly zero temperature coefficient of optical path length. Fluorescence lifetime is over 2ms. YP1 has the temperature oefficient of optical path length of 0.42×10-6/ºC.

YB1 glass: is a Yb3+ doped borate laser glass. This glass exhibits a low thermal expansion coefficient and a negative temperature coefficient of refractive index, resulting in acceptable behavior. YB1 has a high Cross section for stimulated emission of 1.65×10-20cm2.


Yb3+ doped laser glass Properties:


 

  YP1

  YB1

  LASER PROPERTIES

  Yb2O3 (wt%)

  16.1

  13.75

  Yb3+ conc. (1020ions/cm3)

  14.51

  16.8

  Cross section for stimulated emission(10-20cm2)

  1.30

  1.65

  Fluorescent lifetime(usec)

  2200

  850

  Fluorescence half-line width at 290ºK(Å)

  506

  518.8

  Center lasing wavelength(nm)

  1053

  1053

  OPTICAL PROERTIES

  Non-linear refractive index coeff.n2(×1013e.s.u)

  1.48

  1.96

  n (1053nm)

  1.52123

  1.645

  nd

  1.52958

  1.6649

  nF

  1.53517

  1.6721

  nc

  1.52691

  1.6602

  Abbe value

  64.1

  58.42

  dn/dT (10-6/ºC) (20~100ºC)

  -5.3

  -0.8

  Coeff.of linear thermal expansion (10-6/ºC) (20~100ºC)

  10.8

  6.5

  Thermal coeff. of optical path length (10-6/ºC) (20~100ºC)

  0.42

  3.5

  THERMAL PROPERTIES

  Transformation temp.(ºC)

  430

  609

  Softening temp.(ºC)

  473

  650

  Coeff.of linear thermal expansion (10-6/ºC) (100~TgºC)

  12.8

  7.6

  OTHER PROPERTIES

  Density (g/cm3)

  2.95

  3.99

  Chemical durability

  excellent

  excellent


YP1 transmission:

 

YP1 transmission