Single Bar Diode Laser are one of the most sensitive devices for static electricity in today's devices. Generally, Single Bar Diode Laser are equipped with instructions for use. If you are using the instructions, the laser diode has a very long life, because the laser diode is damaged Most of the reason is that the wrong operation or use beyond the laser's rating. So whenever you take the laser diode at any time, you should take appropriate electrostatic protection measures. Since the Single Bar Diode Laser have extremely high static sensitivity, they are not returned after unpacking. If the laser diode to maintain the original package, you can return the goods, so before the purchase must have the correct use of laser diode knowledge, you prevent unnecessary losses!
Pick up and store measures
1. Electrostatic bracelet: When picking up the laser diode, use a grounded antistatic handle.
Antistatic bracelets can safely remove static electricity from personnel exposed to Single Bar Diode Laser, amplifiers, and other electrostatic sensitive devices. The grounding wire contains 1 megohm of resistance to ensure the safety of the user. If the wrist strap is used with the electrostatic control platform pad, the anti-static effect will be better.
2. Anti-static pad: should be in the grounding of the anti-static pad on its operation.
Electrostatic relaxation time of 50 milliseconds, anti-static pad can protect sensitive optoelectronic devices from electrostatic discharge damage. The static relaxation time of these heavy pads is 50 milliseconds to ensure protection against extreme conditions. The electrostatic protective wrist strap is generally connectable to the platform pad, and it is necessary to ground the operator through the wrist strap when touching sensitive electronic devices.
3. Laser Diode Storage: When the laser diode is not applied, short the lead of the laser diode to prevent ESD damage.
Operation and safety measures
1 Use the appropriate drive:
The laser diode requires precise control of the operating current and voltage to prevent laser diode from overloading. In addition, Single Bar Diode Laser the laser driver should provide protection against power transients. Based on the above considerations, the user should use the appropriate application of the laser driver. A voltage source with a current limiting resistor can not be used and it can not provide sufficient measures to protect the laser.
2. Reflex:
The plane in the optical system before the laser diode causes a certain amount of laser energy to be reflected back to the monitor photodiode in the laser, thereby erroneously giving a higher photodiode current. If the optical components in the system move, the reflected light can no longer be incident on the monitoring photodiode, and the horizontal power feedback circuit in the laser will sense the reduction of the photodiode current and increase the laser drive current to compensate for the photodiode Current,Single Bar Diode Laser so that it is possible to drive the laser excessively. Back reflection also causes other faults and damage to the laser diode. To prevent these damage, make sure that the surface of all devices has an inclination angle of 5-10 ° and, if necessary, use an optical isolator to attenuate the direct feedback of the laser.
3. Voltage and current overload:
When using Single Bar Diode Laser, care should be taken not to exceed the maximum voltage and drive current in its specification table, even if it does not exceed its specified value for a short period of time. In addition, even a 3 volt response voltage can damage the laser diode.
4. ON / OFF and power supply coupling transient:
Since the Single Bar Diode Laser have a very open response time, they are easily damaged in a transient of less than 1 microsecond. High current devices, such as soldering iron, vacuum pumps and fluorescent lamps, can cause severe transient transients. Therefore, the use of shock protection socket.
5. Power meter:
When setting and calibrating the laser diode through the drive, an NIST traceable power meter can be used to accurately measure the laser output. Measuring the output of the laser directly before adding the laser to the optical system is usually the safest measurement method. If this can not be done, make sure that all optical losses (transmissances, aperture stops, etc.) are taken into account when determining the total output of the laser.
6. Radiator:
The life of the laser diode is inversely proportional to the operating temperature. The laser diode should be installed in a suitable heat sink, which will pass the laser on the package too much heat in time to pass out.
7.ESD sensitive devices:
At present, the operation of Single Bar Diode Laser is extremely susceptible to ESD damage. This is especially true when long wiring is used between the laser diode and its driver. Avoid exposing the laser or its mounting device to an ESD environment at any time.