A YAG (Neodymium-doped Yttrium Aluminum Garnet) laser is a powerful solid-state laser, primarily emitting invisible infrared light (1064 nm), known for its deep tissue penetration, high precision, and ability to coagulate tissue or create plasma for precise cutting, making it versatile for eye procedures (capsulotomy), dermatology (tattoo/vein removal, skin rejuvenation), and urology (tumor/stone treatment). It works by focusing intense light energy, creating heat or plasma to target specific cells or structures without excessive damage to surrounding areas, especially in pulsed modes.
Yag Laser
Overview
How It Works
- Gain Medium: Uses a crystal of Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG).
- Energy Source: Pumped by flashlamps or laser diodes.
- Wavelength: Primarily emits light at 1064 nanometers (nm), but can be adjusted.
- Modes: Operates in continuous wave (CW) or pulsed (Q-switched) modes for different effects.
- Tissue Interaction:
Coagulation: Lower power density causes heat, coagulating blood vessels (hemostasis).
Photodisruption: High-energy pulses create plasma, causing shockwaves to cut or break down tissue (e.g., in the eye).
Key Applications
- Ophthalmology (Eye Care): Standard for posterior capsulotomy (clearing cloudy capsule after cataract surgery) and treating glaucoma.
- Dermatology & Aesthetics: Tattoo removal (dark inks), hair removal, vascular lesion treatment, skin resurfacing, and pigmentation.
- Urology: Treating bladder tumors, breaking kidney stones (lithotripsy), and prostate surgery (BPH).
- Industrial: Cutting, welding, and marking materials.