Wuhan Questt Asia Technology CO.,LTD
Wuhan Questt Asia Technology Co., Ltd Address:
A7-101, Hangyu building, Wuhan University Sci & Tech Park, East
Lake High-tech Dev. Zone, Wuhan, Hubei, China
Tel: 00862787611146 Fax: 00862759908808 Http://www.questt.com.cn; Email:[email protected]
7
German Technology | Made in China
A. Laser Generator
1. Brief introduction of laser generator
The laser is the device of transforming the electricity energy to the laser energy. In this
system, the laser is Nd
3
:YAG laser. It is mainly composed of the following parts: (1) pump lamp
(2) laser rod (3) cavity (4) optical resonator (6) other accessories
Pump lamp excites the laser medium to transform the electricity energy to optical energy.
The laser rod transforms the optical energy to laser energy. In this system, the pump lamp is the
pulsed Xenon lamp and the laser medium is Nd
3
:YAG rod.
In the cavity, the light emitted from the pump lamp is focused on the laser medium. In our
system, it is the close ceramic cavity.
In the optical resonator, the laser is amplified to form the high intensity laser output.
There are two high damage threshold coated plane mirrors which are set parallel in the
resonator.
Only 3% of the electricity energy is transformed into laser energy during the laser working,
the other electricity energy is transformed into heat and distributed in the pump lamp, laser rod,
and the cavity body. To protect the laser, this heat has to be taken away. In this system, the
pump lamp, laser rod and the cavity body are cooled by the circulation deionized water.
Besides the above parts, there are still the other accessories as follow:
(1) High voltage electrode
，
(2) The insulating base
，
(3) Positioning support, (4) The adjustable
mirror support, (5) Laser support.
2. Things to be aware of:
The laser system is the opto-mechano-electrically integrated. It is very precise and has to be
operated by the authorized person who has the professional technology and technique.
3. Optical resonator
The optical resonator is composed of two coated plane mirrors which are set strictly parallel in
the resonator. These two mirrors can not be touched and moved after the adjustment and keep
clean, otherwise, the surface of the mirror may be destroyed. So, the laser cover can not be
moved at any time. When the laser output becomes low, firstly, it has to be checked whether the
surface of the mirrors are stained. If it has been stained, use the lens paper or absorbent cotton
to erase softly with the cleaning liquid (the mixture of 50% no water ethanol and 50% aether).
Then, check the adjustment of the resonator.
4. Cooling of laser
There are two water hoses connected to the pump lamp and the laser rod respectively. Either of
the hoses is blocked, unredeemable damage may be caused. Every time when the system is
reinstalled, before starting the laser, it has to be checked carefully that the water flow is correct.
5. Change flashing lamp
The pulse Xenon lamp is consumable part. Its service lifetime is 10
6
flash times. To guaranty
the normally work of the system, the lamp has to be changed when it is out of service life or
when the laser energy is weaken.
