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
A band pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range, and it’s used to selectively transmit a portion of the spectrum while rejecting all other wavelengths.
Read More
HGO grows BBO Nonlinear crystals using flux technology. BBO crystal transparency ranges from 188 nm to 5,2 µm, which includes reasonable transparency from 3-5,2 µm for few tens µm thick crystals, while their phase-matchable range spans almost over the entire transparency range. Combined with other magnificent properties of BBO, it is favorable for numerous nonlinear parametric applications. It is worth to mention that BBO crystals have the highest nonlinearity in the UV range out of all common nonlinear crystals.
Read More
HGO is a company has skillful workers with wide processing experiences and skillful processing technique. Thus we also offer processing service such as oriented, cutting, grinding, polishing ,repolishing, coating ,recoating and diffusion bonding etc. Customers are very welcome to contact with us for further information.
Read More
Beamsplitter Penta Prism by adding a wedge and with partial reflective coating on one of its leaning surfaces, Penta Prism can be used as Beamsplitter. Transmission/reflection (T/R) ratio of 50/50, or others for Beamsplitter Penta Prism is available upon request.
Read More
Prisms are transparent optical devices which refract or reflect light. They have manifold applications in laser technology.
Read More
The Rhomboid prism application for rhomboid-prism is controlling and redirecting the optical path without affecting the image direction. They can be used to displace an optical center line for light beam folding and stereoscopic systems of different sizes.
Read More
HGO grows Ho:YLF laser crystals using Czochralski technology. Ho:YLF is a very attractive laser material, because the lifetime of the upper laser level is much longer ( ~ 14 ms) than in Ho:YAG and the emission cross sections are higher. Additionally the thermal lens in Ho:YLF is much weaker, which helps to generate diffraction limited beams even under intense end-pumping. The primary advantage of directly pumping the Ho 5I7 is that it does not have to depend on energy transfer, which lends itself to various radiative and non-radiative losses. Up-conversion losses that have deleterious effect in high-energy Q-switched lasers are eliminated.
Read More
IPv6 network supported
