Products
Home /CRYSTALS /

Passive Q-switch

/Cr4+:YAG crystals Chromium Doped Yttrium AIuminum Garnet

Cr4+:YAG crystals Chromium Doped Yttrium AIuminum Garnet

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:

    China
  • Shipping Port:

    Fuzhou, China
  • Lead Time:

    3-4weeks
Share To : f t y b l ins
  • Product Detail

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
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Related Products
Co2+:MgAl2O4  Cospinel Q-switch
Co2+:MgAl2O4 Cobalt-doped magnesium aluminate spinel

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
Large Size Plano Concave Cylindrical Lens
Plano-Concave Cylindrical Lenses

A cylindrical lens is a lens that focuses light on a line instead of a point, like a spherical lens. The curved face or faces of a cylindrical lens are sections of a cylinder, and focus the image passing through it into a line parallel to the intersection of the surface of the lens and a plane tangent to it. The lens compresses the image in the direction perpendicular to this line and leaves it unaltered in the direction parallel to it (in the tangent plane). In a light sheet microscope, a cylindrical lens is placed in front of the illumination objective to create the light sheet used for imaging. Cylindrical lenses focus or expand light in one axis only. They can be used to focus light into a thin line in optical metrology, laser scanning, spectroscopic, laser diode, acousto-optic, and optical processor applications. They can also be used to expand the output of a laser diode into a symmetrical beam. Cylindrical lenses are widely used in telecom applications like WSS, 40G/100G modules and laser applications like pump laser modules

Read More
Lithium Triborate (LiB3O5 or LBO Crystal)
LBO Nonlinear Optical crystal Lithium Triborate Crystal

HGO grows LBO Nonlinear crystals using flux technology. LBO crystals is an excellent nonlinear crystal.For frequency doubling(SHG),tripling(THG) of Nd:YAG,Nd:YLF,Nd:YVO4 lasers, it is one of the most useful nonlinear optical materials in ultraviolet and visible laser applications.

Read More
Diode pumped picosecond Pr:YLF laser crystals
Pr:YLF crystals Protactinium doped Yttrium Lithium Fluoride

HGO grows Pr:YLF laser crystals using Czochralski technology. Pr3+:YLF has been found as promising laser material for producing visible lasers directly and UV lasers through intracavity second-harmonic generation. Very few laser materials have the necessary properties for the realization of lasing in the visible spectral range. Trivalent praseodymium (Pr3+) is known to be an interesting laser ion for use with solid-state lasers in the visible spectral range because of its energy levels scheme, providing several transitions in the red (640 nm, 3P0 to 3F2), orange (607 nm, 3P0 to 3H6), green (523 nm, 3P0 to 3H5), and dark red (720 nm, 3P0 3F3+3F4) spectral regions.

Read More
Er:YAG Crystal for solid-state laser
Er:YAG Crystals (Erbium-Doped Yttrium Aluminum Garnet)

Er: YAG (Erbium-doped Yttrium Aluminum Garnet) is a solid-state crystal widely used as a laser medium in various medical and dental applications. It is made by doping erbium ions into yttrium aluminum garnet (YAG) crystals and can emit laser light with a wavelength of approximately 2.94 micrometers in the infrared spectrum.

Read More
Pure YVO4 Yttrium Orthovanadate crystals
YVO4 crystal Yttrium Orthovanadate

The Yttrium Orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It has good temperature stability and physical and mechanical properties. It is ideal for optical polarizing components because of its wide transparency range and large birefringence. It is an excellent synthetic substitute for Calcite (CaCO3) and Rutile (TiO2) crystals in many applications including fiber optic isolators and circulators, interleavers, beam displacers and other polarizing optics.

Read More
Specializing In Manufacturing Rhomboid Prism
Optical Rhomboid Prism

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
Polarizing Beamsplitter Cubes Mounted And Unmounted |
Polarizing Beamsplitter Cubes Mounted And Unmounted

Polarization Beamsplitter Cubes are constructed by cemented two right angle prisms, the hypotenuse of one prism is coated with polarization dielectric coating. When used with normal incident, un-polarized light, the incident beam is separated into two polarized beams, p-polarized component is passed straight through, s-polarized component is reflected out at 90deg.

Read More
Leave A Message
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Home

Products

about

contact