What is a laser diode?
A laser diode is a semiconductor device that emits light at a specific wavelength, commonly used in low-level laser therapy (LLLT) devices for hair regrowth.
Laser diodes offer precision, durability, and consistent output, making them ideal for wearable or in-office hair restoration tools.
Red light therapy devices equipped with laser diodes typically target the 650–680nm range, stimulating mitochondrial activity and supporting follicle regeneration during the anagen phase.
Related terms
Photoreceptors
Light & Technology
Photoreceptors are specialized molecules or proteins that detect and respond to light energy.
Low-level laser therapy (LLLT)
Light & Technology
Low-level laser therapy (LLLT) is a treatment that uses low-intensity lasers or LEDs to stimulate cellular activity without heating tissues.
Therapeutic window
Light & Technology
The therapeutic window in light therapy refers to the optimal dosage range (wavelength, intensity, and duration) that produces biological benefits without causing harm.
Melanin
Light & Technology
Melanin is the pigment responsible for hair, skin, and eye color.
