Products
Home /CRYSTALS /

Passive Q-switch

/Co2+:MgAl2O4 Cobalt-doped magnesium aluminate spinel

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.

  • Product Origin:

    China
  • Shipping Port:

    Fuzhou, China
  • Lead Time:

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

Descriptions:

 

 

Co2+:MgAl2O4 Cobalt-doped magnesium aluminate spinel is a relatively new material for passive Q-switching specially for eye-safe 1.54 μm Er:glass laser, but also works at 1.44 μm and 1.34 μm wavelengths.

 

 

Main applications:

1) Passive Q-switch for Radar and Ranging Er:Glass lasers @1,35µm

2) Passive Q-switch for Medical lasers @1,500 µm

 

Advantages:

1) Rare excited absorption

2) High constant of Q-switch

3) High absorption section

4) Long excited lifetime

5) Evenly distributed cobalt

6) Wide absorption band

Basic properties of Cospinel

Chemical formula

Co2+:MgAl2O4

Crystal structure

Cubic

Lattice parameters

8.07Å

Density

3.62 g/cm3

Melting Point

2105°C

Refractive Index

n=1.6948 @1.54 μm

Thermal Conductivity/(W·cm-1·K-1@25°C)

0.033W

Thermal Expansion /10-6 /°C@25°C

1.046

Specific Heat/ (J·g-1·K-1)

5.9

Hardness (Mohs)

8.2

Extinction Ratio

25dB

Density

1.6-1.75

 

 

HGO offers Cospinel specifications:

Orientation:

<100> or <111>

Initial absorption coefficient

0~7cm-1@1064nm

Initial transmission

50%~99%

Wavefront Distortion:

λ/8per inch @ 632.8 nm

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 Co2+:MgAl2O4 Cobalt-doped magnesium aluminate spinel.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 within 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 optical bonding kits between Er:Yb:glass and cospinel q-switch can also be supplied.

HGO could also provide high quality polishing and apply high laser induced damage threshold coating for the switch.and also for other related cavity lens and mirrors for the eye safe lasers systems.

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
Cr4+:YAG passive q-switch
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.

Read More
high laser induced damage threshold Er:Yb:glass
Er:Yb:glass crystal Erbium and ytterbium co-doped phosphate glass

Er3+, Yb3+ co-doped phosphate glass is a well-known and commonly used active medium for lasers emitting in the “eye-safe” spectral range of 1,5-1,6 µm. As an eye-safe wavelength laser, 1540um ,Er3+/Yb3+ co-doped phosphate glass lasers have attracted much attention for their compactness and low cost, such as laser generation and signal amplification because the wavelength of 1540nm is just at the position of the eye-safe and the fiber optic communication window. 1540nm lasers have used in ranging finder, radar, target recognition. Er3+/Yb3+ co-doped phosphate glass cooperate with passive Q-Switch crystal cospinel can get 1540nm pulse solid-state laser.

Read More
Nd:GdVO4 laser host crystals
Nd:GdVO4 Crystal Neodymium Doped Gadolinium Orthovanadate

Nd:GdVO4, is a promising material for diode pumped lasers. Similar to the more well-known Nd:YVO4 crystal, Nd:GdVO4 crystal also exhibits high gain, low threshold, and high absorption coefficients at pumping wavelengths. Nd:GdVO4 has the additional advantage over Nd:YVO4 of a much higher thermal conductivity. For CW lasing at 1.06 um and 1.34 um and intracavity doubling with KTP and LBO, the gadolinium vanadate have produced a higher slope efficiency or optical conversion than Nd:YVO4.

Read More
UV Fused Silica Corner Cube Retroreflectors Prisms

Corner Cube Prism also called Retroreflector.It has three mutually perpendicular surfaces and a hypotenuse face. Light entering through the hypotenuse is reflected by each of the three surfaces in turn and will emerge through the hypotenuse face parallel to the entering beam regardless of the orientation of the incident beam. For its special performance, it is often used to the distance measurement, optical signal process and laser.

Read More
China Customized Dispersion Prism Manufacturers
30° - 60° - 90° Littrow Dispersion Prisms

Dispersion Prisms are used in applications that require separating the incident light into its component wavelengths. For example, when white light enters a Dispersion Prism, it is separated into its three components: red, green, and blue. Dispersion Prisms are ideal for spectroscopy or laser tuning.

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
High Power Laser Line Windows

Laser Protect Windows(Laser protective glass, protective filters or welding protective windows) are used to save for the high cost of laser optics.

Read More
MgF2 crystal Magnesium Fluoride

MgF2 or Magnesium Fluoride is positive uni-axial crystal with a very high optical transmittance from the vacuum UV to IR. It is regularly used for optical elements where extreme ruggedness and durability is required. It also has a large resistance to mechanical and thermal shock, to optical radiation, and is chemically stable, making it a very useful materials for UV and IR optics.

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