Model Cr+4 YAG -Passive Q-Switch
Cr+4:Y3Al5O12 or Cr+4:YAG - is a material that can be used as an active media for CW, pulsed or self mode-locked tunable NIR solid-state lasers with tunability range 1340 - 1580 nm as well as a media for Q-switching in lasers with operating wavelength at 950 - 1100 nm. It is particularly useful in practical applications because of convenient absorption band of Cr+4around 1 mm which gives possibilities to pump it by regular Nd:YAG lasers. A saturation of absorption in the band at 1060 nm is useful for application in small sized Nd:YAG oscillators with flash lamp or laser diode pumping instead of based on dye or LiF:F-center passive Q-switches. Using the Cr+4:YAG crystal the self mode-locking (KML) regime is achievable. It gives an opportunity to build the laser source with pulse duration shorter then 100 fs at 1450 - 1580 nm.
Finally, its high thermal and radiation stability as well as excellent optical and mechanical properties will give you an opportunity to design reliable devices based on the crystal.
- Wavelength, nm: 950 - 1100 nm
- Initial transmittance, %: 15 - 90
- Initial absorption coefficient, cm-1: 0.05 - 3.00
- Aperture, mm: 5 - 12
- Contrast: > 8 - 10
- Optical length, mm: 1 - 40
- Damage threshold, J/cm2: > 4
- Long-term stability: > 15 years