Cr:YAG – Chromium doped yttrium aluminum garnet
Absorption range 1340 nm – 1600 nm | Emission range 900 nm – 1150 nm
Yttrium aluminum garnet doped with chromium, usually known as Cr:YAG, Cr4+:YAG or Cr4+:Y3Al5O12 is a crystal material used as working laser gain medium in pulsed or self-mode-locked (KML) tunable nearbinfrared (NIR) lasers of 1340-1600 nm tunability range. It is also used as an active media for continuous wave (CW) lasers.
Typically, Cr:YAG can be grown by Czochralski method. 3photon is capable of compact diffusion crystal bonding by merging together Cr:YAG and Nd:YAG or Yb:YAG or other crystals.
- Excellent physical properties – UV resistant, chemically stable, good thermal conductivity and high damage threshold;
- High optical second harmonic generation (SHG) conversion;
- Large absorption section with peak around 1060 nm;
- Eliminates the necessity of high voltage power supply;
- Using Cr:YAG crystal self-mode-locking (KML) regime is achievable.
- Passive Q-switch for lasers operating at 1 µm – Neodymium (Nd) and Ytterbium (Yb) doped YAG, YAP, YLF an YVO4;
- Passively Q-switched lasers in:
- Laser-Designator-Rangefinder (LDR) systems;
- Light-Detection-And-Ranging (LIDAR) systems;
- Laser-Induced-Breakdown-Spectroscopy (LIBS) systems.
- Cr:YAG can also be used as a laser crystal tunable at 1340 – 1600 nm