what are you looking for?
Cr4+:YAG
(Y3Al5O12) crystal is ideal for passive
Q-switch operation of Nd:YAG and other Nd3+ or Yb3+ doped
laser crystals in the wavelength range of 900 nm to 1200 nm. Passive
Q-switches or saturable absorbers provide high power laser pulses without
electro-optic Q-switches, thereby reducing the package size and eliminating a
high voltage power supply. A remarkable feature of Cr4+:YAG is
the high damage threshold of >10 J/cm2@1064 nm, 10 ns. Its absorption band
extends from 900 nm to 1200 nm and peaks around 1060 nm with a
very large absorption cross-section.
Product Origin:
ChinaShipping Port:
Fuzhou, ChinaLead Time:
3-4weeks
Descriptions:
Cr4+:YAG (Y3Al5O12) Chromium Doped Yttrium AIuminum Garnet crystal is ideal for passive Q-switch operation of Nd:YAG and other Nd3+ or Yb3+ doped laser crystals in the wavelength range of 900 nm to 1200 nm.
Main applications:
1) Passively Q-switched lasers for laser rangefinders, LIDAR, and LIBS systems
2) Laser systems where short pulses are required
Advantages:
1) High chemica stability and reliability
2) Easy to operate
3) Long lifetime and good thermal conductivity
Basic properties of CrYAG
|
Chemical Formula |
Cr4+:Y3Al5O12 |
|
Crystal Structure |
Cubic |
|
Mohs Scale of Mineral Hardness |
8.5 |
|
Melting Point |
1970 °C |
|
Density, g/cm3 |
4.55 |
|
Coefficient of Thermal Conductivity @ 25°C, W x cm-1x °K-1 |
0.14 |
|
Coefficient of Thermal Expansion |
8.2 x 10-6/ ℃<100> |
|
Young's Modulus |
7.7x 106<100> |
|
Thermal Shock Resistance |
790 Wm-1 |
HGO offers CrYAG specifications:
|
Orientation: |
<100> or <110> |
|
Initial absorption coefficient |
0.1~8.5cm-1@1064nm |
|
Initial transmission |
3%~98% |
|
Wavefront Distortion: |
λ/8per inch @ 632.8 nm |
|
Dimension Tolerances： |
rods with diameter: +0.0/-0.05 mm , Length: ±0.1 mm |
|
Surface Quality: |
20/10 Scratch/Dig MIL-O-1380A |
|
Parallelism: |
< 10″ |
|
Perpendicularity: |
< 10′ |
|
Clear Aperture: |
> 90% |
|
Surface Flatness: |
< λ/10 @ 632.8 nm |
|
Chamfer: |
< 0.1 mm @ 45deg. |
|
Size |
Upon customer request |
|
Coating |
AR/HR/PR coating upon customer’s request |
|
Damage Threshold |
750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz |
|
Quality Warranty Period |
One year under proper use |
Why Choose HGO ?
HG OPTRONICS.,INC. supplies very high quality of Cr4+:YAG passive Q-switch crystals Chromium Doped Yttrium AIuminum Garnet. The use of high quality starting materials for crystal growth, boule interferometry, and precise measurement of initial transmission and absorption using transmission spectroscopy and ZYGO measurements, assures that each crystal will comply with customer’s specification and perform well in laser system.
Tolerance of initial transmission can be well controlled in as high precision as 0.5% which could be very essential to some delicate laser systems.
Besides, based on HGO’s advanced bonding technology, high quality of diffusion bonding between Nd3+, Yb3+ or other ions doped YAG host laser crystals and CrYAG are available from stock or for customization.
What is more,HGO have mature solutions for different laser parameters especially in microchips solution and our engineer are very glad to discuss and provide solutions for customers.
Leave A Message
Co2+:MgAl2O4 Cospinel is a relatively new material for passive Q-switching in lasers emitting from 1.2 to 1.6 μm, in particular, for eye-safe 1.54 μm Er:glass laser, but also works at 1.44 μm and 1.34 μm wavelengths. Spinel is a hard, stable crystal that polishes well. Cobalt substitutes readily for magnesium in the Spinel host without the need for additional charge compensation ions. High absorption cross section (3.5×10-19 cm2) permits Q-switching of Er:glass laser without intracavity focusing both with flash-lamp and diode-laser pumping. Negligible excited-state absorption results in high contrast of Q-switch, i.e. the ratio of initial (small signal) to saturated absorption is higher than 10.
Read More
Plano-concave rectangular cylindrical lenses provide uni- axial negative imaging for anamorphic beam expansion and a wide range of applications.These lenses may also be used as mirror blanks if a concave cylindrical surface mirror is required.
Read More
Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 um wavelength band.
Read More
YbYAG crystal is more suitable for diode-pumping than the traditional Nd-doped systems. It can be pumped at 0.94 μm laser output. Compared with the commonly used Nd:YAG crystal, Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-state lifetime, three to four times lower thermal loading per unit pump power. Yb:YAG crystal is expected to replace Nd:YAG crystal for high power diode-pumped lasers and other potential applications.
Read More
HGO grows Nd:YLF laser crystals using Czochralski technology. Nd3+:YLF crystal is characterized by its long lifetime of 4F3/2 neodymium energy level. Compared to Nd:YAG, the lower thermal conductivity and a weak negative dn/dT lead to lower thermal distortions and allow to achieve a better output beam quality. Another distinctive feature is the high UV transparency, which is favorable for pumping with xenon flash lamps.
Read More
Calcium Fluoride windows and lenses for UV and IR spectrum. Custom made CaF2 windows, CaF2 lenses and wedges according to customer's specifications. CaF2 windows up to 220mm diameter; CaF2 wedges, prisms and CaF2 mirrors; Excimer CaF2 optics, Raman grade CaF2 optics and etc.
Read More
Prisms are transparent optical devices which refract or reflect light. They have manifold applications in laser technology.
Read More
Potassium Titanyl Phosphate (KTiOPO4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidar, optical communication and industrial systems.
Read More
IPv6 network supported
