LOW LEVEL LASER THERAPY

In general, laser diodes can be either continuous wave (CW) or pulsed. Continuous wave diodes emit laser energy continuously, while pulsed diodes generate high-amplitude radiation impulses of very short duration, typically 100-200 nanoseconds. Continuous wave lasers maintain a constant power level during emission. Though they lack the high peak power of “true“ or “super“ pulsed lasers, they can be made to flash multiple times per second, simulating pulse-like rhythms by rapidly turning the light on and off, similar to flipping a light switch.

“True“ or “super“ pulsed lasers emit brief, high-power light impulses. The high peak power achieved during each pulse allows the light energy to penetrate deeply into the target tissue. The peak power of these lasers is significantly higher than their average pulse power, enhancing the effectiveness of light energy delivery into the tissue. The advanced laser and electronic technologies required for pulsed diodes, and the diodes themselves, are more sophisticated and costly compared to continuous wave diodes. This cost factor is why over 90% of therapeutic lasers in the North American market are low-power continuous wave lasers, some of which provide power levels comparable to an inexpensive laser pointer costing around $30.