Nd doped phosphate glass has long fluorescence lifetime, good property of energy storage, wide absorption spectral bandwidth, and low thermal conductivity of the glass base, pump light is easy to be absorbed, and large size, its 1.06 micron laser has important applications in material processing, and can be used for laser drilling and laser welding.
The main components of device are:
Gain medium Nd doped glass
Being used to produce a laser of 1.06μm. Nd doped glass has good optical performance, high energy conversion efficiency, easy to be processed and low cost, is suitable for Q-switching.The disadvantage is that the thermal conductivity is not as good as that of ruby, but the temperature effect is weaker than that of Ruby. Therefore, using a full water cooling device can still achieve better stability.
Pump light: Xenon lamp——The radiation spectrum of the xenon lamp is in contrast to the absorption spectrum of the Nd glass, and the two have a good consistency, which makes the xenon lamp a effective light pump.
Focus Cavity——The outer walls of the focus cavity are machined to equally spaced grooves to reduce the weight of the cavity and increase the heat dissipation area.
Optical cavity——A flat-faced cavity was used, and the total reflection dielectric film had a reflectance of 98% for the 1.06 μm laser.
Cooling method——The deionized water is blown into the focus cavity and flows in a circular motion to simultaneously cool the xenon lamp, the working substance and the focus cavity.
The output wavelength of the Nd doped glass laser is 1.06 micron. The main advantage of the neodymium glass laser is lower cost and higher energy conversion efficiency of the device, which can be made into larger size devices for obtaining higher power or Infrared pulsed laser with larger energy. This type of laser is mainly used in laser processing such as punching and welding.
- High energy conversion efficiency
- Good optical uniformity
- Easy optical processing
- low cost
- Good energy storage effect
- Hardening Treatment
Nd：glass laser was used to do the hardening treatment of the highest point position on stainless steel components of vapour flowemeter. The use of the glass laser quenching process not only improves the quality of the product, but also saves processing time by eliminating the need for secondary grinding. It is obvious that the glass laser is effective for the hardening of the local small surface of the metal parts.
- Laser welding
The main features of laser welding are: small thermal impact area, small thermal deformation, non-contact processing, and precision welding. Due to the good optical uniformity of the Nd glass,and easy to do optical processing, and the low cost, industrially applied pulsed solid lasers often use Nd glass as the working medium.
- Laser Hole Drilling
The laser is an important part of the laser drilling equipment. Its main function is to convert the power provided by the power system into laser energy with a certain conversion efficiency. Solid-state lasers for perforation mainly include ruby lasers, Nd glass lasers, and YAG lasers. Among them, the energy conversion efficiency of the Nd glass is high, and it is easy to obtain high power output.