The laser diode belongs to the group of semiconductor components sensitive to temperature. Ordinary cheap diodes can withstand temperatures from -0°C to +35°C. The better ones from -15°C to +45°C. Very high quality and also expensive ones can withstand even -12°C to +70°C (HT diodes) or, -20~60°C green (SHT). In our climatic conditions, the "better" diodes with a range of -15°C to +45°C are usually sufficient. Then HT versions of the diodes for warmer plants or SHT for the hottest ones

The location of the laser plays a big role in its endurance. That is, if it is placed outdoors or in an enclosed space that does not freeze and is not heated by the sun through the tin roof in summer. Lasers are best suited to room temperatures between 15°C and 25°C. More tempered lasers are suitable for freezing conditions.

The temperatures quoted on all datasheets (unless it says otherwise directly) in this country and anywhere in the world refer to the temperature of the diode. This means, for example, that for a laser with a lifetime of +45°C, the real temperature that can be measured by the customer on the surface of the laser is around +42°C. This is already an emergency condition! Reaching such a temperature leads to a very fast degradation of the laser diode and its fading. It is advisable to prevent this with a heat sink or other suitable external temperature control. See paragraph 8) and the lifetime table. Alternatively, just switch the laser so that it only shines for as long as necessary.

For example, for our red lasers in the class up to 5mW with a resistance of -12~45°C (valid for versions with 6V to 30V AC/DC converter) the problem of heating up by actual operation is practically eliminated).  It only gets to the breakdown temperature by external influences. Please note that this is an EMERGENCY condition and multiple repetitions will certainly lead to damage of the laser diode. Also, operating the laser in such a state where the beam is "weak" and the laser is melted for tens of minutes will also lead to damage to the laser diode. There is no warranty for such damage anywhere in the world.

A similar situation exists when switching on a laser that is supercooled below -15°C. It can burn up instantly after switching on due to short circuit and condensation in the electronics. Also, low temperatures can cause mechanical stresses between different materials inside the diode, which can lead to physical damage or degradation of the material. Some materials can change their optical properties at low temperatures, which can affect the laser emission. At very low temperatures, changes in the electronic properties of semiconductor materials can occur, which can lead to a reduction in the efficiency of the laser diode.

All of our industrial lasers are not bothered by common climatic conditions such as water, snow, dust, wind, shocks and minor vibrations. Our lasers meet a minimum rating of IP65 and above.