What is Nd:YAG laser?

Nd:YAG (neodymium-doped yttrium aluminium garnet) is a crystal that is used as a laser medium for solid-state lasers.

The triply ionised neodymium [Nd(III)] dopant (ie a substance added in minute amounts to another pure substance to alter its conductivity), typically replaces a small fraction of the yttrium ions in the host crystal structure, since the two ions are of similar size.

The neodymium ion provides the laser activity in the crystal.

Nd:YAG laser has a wavelength of 1064 nm and has the capability to reach deeper layers of skin tissue than other types of lasers.

In Q-switched mode, Nd:YAG produces 2 wavelengths, one in the infrared range (1064 nm) and a second beam of 532 nm wavelength which is useful for superficial skin lesions. Q-switching refers to the technique of making the laser produce a high intensity beam in very short pulses


How does Nd:YAG laser work?

Lasers work by emitting a wavelength of high energy light, which when focused on a certain skin condition will create heat and destroy diseased cells.


What is Nd:YAG laser used for?

The FDA has approved a range of Nd:YAG laser machines for various skin disorders. These include Cutera Nd:YAG laser (Cutera, California, USA), RevLite Q-Switched Nd:YAG laser (Cynosure, Massachusetts, USA) and Fotona Nd:YAG laser (Aesthetic Lasers Inc. MN, USA). Individual machines are designed to treat specific skin problems.


The following skin disorders can be treated with Nd:YAG laser beams.

1. Hair removal

Nd:YAG laser may be used for hair removal in any location including underarms, bikini line, face, neck, back, chest and legs.

Nd:YAG laser is generally ineffective for light-coloured (blonde/grey) hair, but effective for treating dark (brown/black) hair in patients of Fitzpatrick types I to III, and perhaps light-coloured type IV skin.

Extreme caution is recommended in tanned or darker-skinned patients, as the laser can also destroy melanin, resulting in white patches of skin (leukoderma).

The longer-pulse (millisecond) 1064-nm Nd:YAG laser system has been shown to be more effective in safely removing hair than has the Q-switched (nanosecond) Nd:YAG system.

Light pulses target the hair follicle, which causes the hair to fall out and minimises further growth. Typical settings employed include pulse durations of 2 to 20 milliseconds and fluences of 10-40 J/cm2.

2. Vascular lesions
3. spider and thread veins in the face (cheek, temporal region, nasal dorsum, forehead) and legs.
4. vascular birthmarks (capillary vascular malformations)
5. Varicose veins in the leg
6. Facial veins (telangiectasis)
7. Haemangiomas (vascular tumours) in the face and around the mouth
8. Pigmented lesions
 

Enquire Now