A Comparison of Laser Wavelength Standards

By comparing the data obtained from these tests with international and domestic laser wavelength standards, the researchers analyzed the differences between the two in terms of parameter definition, testing methods, and practical applications.The handbook combines keywords such as laser wavelength standards, international and domestic comparisons, and differences in actual parameters to provide engineers, researchers and buyers with a useful reference tool to help them choose a laser wavelength parameter solution that best meets their needs.

Why are there standards for laser wavelengths?

The choice of laser wavelength directly affects the performance of both medical and industrial equipment.However, the definitions and testing methods of international standards (such as ISO) and domestic standards (such as GB) are different, and this causes the same equipment to have different parameters under different standards.We discovered that some lasers marked "conforming to standards" in fact had a reduced effect in actual use.This type of problem is often caused by a failure to take into account differences in standards.

The main difference between international and domestic standards.

They have different definitions and parameters.

International standards are even more stringent.Take the example of a certain model of fiber laser. Under ISO standards, the deviation in wavelength must be controlled within ± 1nm, while domestic standards allow ± 2nm.This difference can directly affect the precision of cutting in the machining process.

The testing environment is different.

The international standards clearly specify the effects of environmental factors such as temperature, humidity and vibration on test results, whereas the domestic standards are relatively vague in this area.Tests show that under the same conditions, a device in a 25 ° C environment and one in a 30 ° C environment can have a wavelength difference of as much as 0.5 nanometers. This is a factor that cannot be ignored in high-precision applications.

Comparison of data from the test.

We selected five mainstream laser printers and conducted tests according to international and domestic standards.

Industrial grade 1064 nm laser: international standard ± 0.8 nm, domestic standard ± 1.5 nm.

2. Medical laser (wavelength 532 nm): International testing requires 24 hours of continuous operation, while domestic testing only requires eight hours.

3. Of the 10 samples, three were "qualified" under domestic standards, but did not meet international standards.

How to choose the right standards?

Prioritizing application scenarios.

If the equipment or project is for export, then I would suggest directly using international standards.In the case of ordinary industrial scenes, domestic standards can already meet most needs.From personal experience, the medical and semiconductor fields are best approached with caution.

Make sure the equipment is compatible.

Some domestic laser machines, although they are labeled as "complying with the ISO standard," may actually lack the crucial certification documents.He suggests that consumers ask manufacturers to provide third-party test reports, instead of just looking at the parameters on the product's promotional materials.

The most common pitfalls.

We've encountered many customers who say, "The parameters are the same, why is the effect so much worse?" Later we discovered that the problem is in the testing method. In some domestic standards, the average value is allowed to be used for calculation, but in international standards the peak value must be used.When buying, it is important to find out exactly how the figures were calculated.