Among many skin beauty technologies, long pulse width 1064nm laser and photon redness removal are two common choices. But many people are confused about the difference between them and how to choose. In fact, although the long pulse width 1064nm laser sounds unfamiliar, the core laser source of well-known technologies such as Foremed LegendUP Bang Bang Light, European Star Fotona4D, and Syneron 5GMAX Speed Lifting is mostly the long pulse width 1064nm laser.

There are essential differences between long pulse width 1064nm laser and picosecond 1064nm laser and nanosecond 1064nm laser. Picosecond 1064nm laser, as the name implies, is a 1064nm laser with an emission time/action time of picoseconds (10⁻¹² seconds), which is mainly used to deal with pigmentary problems, such as freckles, sun spots, brown-blue moles, etc. The action time of long pulse width 1064nm laser is between microseconds and milliseconds, such as a laser with a pulse width of 0.3 - 30ms.

When the pulse width is 0.3-1ms, the long pulse width 1064nm laser can play a significant role in microvascular lesions that are difficult to detect with the naked eye, such as diffuse flushing; when the pulse width is 5-30ms, it has a stronger targeting effect on red blood vessels and varicose veins that are visible to the naked eye and have a diameter of more than 1mm. In addition, the optical penetration depth of the 1064nm laser wavelength can reach 1.7mm, which has a good ability to clear deep vascular lesions. In contrast, the penetration depth of photons 560nm or 590nm is relatively shallow, which is the first major difference between the two.

When dealing with unstable skin problems such as rosacea, sensitive skin, and dermatitis, the safety advantage of the long pulse width 1064nm laser is more prominent. Because the 1064nm laser wavelength absorbs less melanin, hemoglobin, and water, it will not cause strong tissue heating when the energy is not high. Especially the millisecond-level 1064nm laser, which has low power (power = energy / pulse width, the longer the pulse width, the lower the power), can flexibly adjust the intensity.

However, the 560/590nm wavelength of photons is more absorbed by melanin and hemoglobin, and the pulse width is usually 3-6ms, which is relatively short. Even with low energy, it may cause certain temperature changes. For this type of unstable skin problem, the light modulation idea mentioned above requires avoiding strong tissue heating. The temperature rise is best controlled within 4°C. The skin surface temperature is generally around 34-35°C. It is advisable to control the temperature within 39°C during light modulation. The long pulse width 1064nm laser has a wide safety window and is not easy to irritate unstable skin conditions due to excessive heating.

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The content of this article is for learning reference only. The pictures are from the Internet.

Foremed Legend

The core founding team of Suzhou Foremed Legend Medical Technology Co., Ltd. comes from well-known universities at home and abroad such as Peking University. Foremed Legend focuses on the design, development and application of high-end medical aesthetic optoelectronic equipment based on compliance and product strength, and is committed to becoming a leading company in the field of high-end medical aesthetic optoelectronic equipment, a provider of integrated diagnosis and treatment intelligent solutions, and a pioneer of medical aesthetic data integration platform.

Through tackling a series of underlying key technologies, Foremed Legend has independently developed a number of high-end medical equipment such as picosecond laser therapy devices, long pulse laser therapy devices, intense pulsed light therapy devices, photoacoustic imaging skin detection devices and cold air therapy devices, and continues to deepen the research and development of core product technologies, using better technical solutions to benefit the vast number of beauty seekers.

Adhering to the principle of technology for good, Foremed Legend will work with industry and ecological partners to bring more safe and effective medical aesthetic optoelectronic equipment and integrated diagnosis and treatment solutions to the global medical aesthetic market.