The Picosecond Nd-YAG Laser
The picosecond Nd-YAG laser has a few differences from the conventional Nd-YAG laser. picosecond Nd YAG laser, For example, the picosecond laser is more effective in penetrating deeper into the dermis. This enables the laser to cause greater damage and activates inflammatory cytokine signaling. The changes that are caused by this type of laser are not related to pulse frequency and they can last for up to 6 weeks or longer.
The Nd-YAG laser produces intermediate absorption features that are halfway between those of the picosecond laser and the Ruby nanolaser. picosecond nd YAG laser, In addition, the array does not greatly influence the spectra obtained with and without the array are comparable. The intensity of the 651 nm absorption band can be used to assess the effectiveness of the laser by comparing the spectra obtained before and after treatment. The Nd-YAG laser produces residual absorptivities of around 1% compared to 22% after Ruby nano treatment.
The Nd-YAG laser uses a frequency-doubling crystal and holographic beam-splitter optics to deliver a focused beam of light. picosecond nd YAG laser Its pulse duration is approximately 450 ps, and its pulse frequency is approximately 10 Hz. It is currently used for the treatment of facial atrophic scars. However, more studies are needed to gather stronger evidence for this treatment.
The photon energy of the picosecond Nd-YAG laser is low enough to induce tissue reactions. picosecond nd YAG laser The nanosecond-domain Nd-YAG laser is also capable of causing tissue reactions. The spot size of nanosecond-domain Nd-YAG laser treatment is 5.3 mm; while a single picosecond-domain beam emits light at 1,064 nanometers. The fluency of this type of laser is around 0.36 J/cm2.
This type of laser uses a high peak power and low pulse durations to effectively remove pigmented lesions and multi-colored tattoos. picosecond nd YAG laser, In addition, it has nearly no side effects in this treatment. The Picosecond Nd-YAG laser works by emitting light that is of the same wavelength as the pigment in the skin.
Picosecond laser technology is continually evolving and adding new wavelengths. New wavelengths allow for more targeted treatments. For example, the new 1,064-nm Nd-YAG laser is effective in removing blue, red, and purple ink. This new technology allows for more precise and accurate results.
One study showed that a single 532-nm picosecond laser treatment resulted in vacuolization in epidermal cells, which decreased melanin pigments. A subsequent study showed that a higher dose of the same wavelength produced similar vacuolization in the epidermis and lower dermis.
The Picosecond Nd-YAG laser is considered safer and more effective than the conventional Qs Nd-YAG laser. A new study shows that a 1,064-nm ps Nd-YAG laser is as effective as a 1,064-nm Qs Nd-YAG laser in treating melasma.
The study also found that a Picosecond laser significantly reduced acne scars. It also significantly reduced pore size and made skin smoother. The patients reported less skin roughness and improved acne gloss after four treatments. The study also measured skin flatness, and the height of each treatment site was significantly decreased after treatment. In contrast, the non-ablative group showed no difference.