The Use of High Powered 867nm Laser Diodes in the Luminex® Therapy System


A Laser Diode for LLLT


Laser as a Therapeutic Tool


Understanding Low Level Laser Therapy (LLLT)

Understanding Low Level Laser Therapy (LLLT)

Q. What is a Laser and how does Laser Light differ from daylight?

A. A laser is a device that emits a special form of light. Laser light consists of light waves of a single wavelength in which all the waves reinforce one another, called COHERENCE. If you imagine heavy surf with large waves breaking on a beach instead of many small waves, you get a sense of COHERENT light. The term LASER is an acronym for Light Amplification by Stimulated Emission of Radiation. Radiation in this case refers to the coherent light energy released, which produces the laser beam. In contrast, normal daylight is incoherent light. It consists of all of the colors of the rainbow, with wavelengths from 400 nanometers (nm), where the light is a blue color, to the rich, red wavelengths of 750 nm. Our Luminex® Laser Therapy System generates light at a wavelength of 867 nm; in the infrared spectrum, where laser light is nearly invisible to the naked eye.


© 2003


© 2003

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Q. What does the phrase Low Level Laser Therapy (LLLT) mean?

A. Low level Laser Therapy (LLLT) means the use of low powered laser light, in the range of 1-1000mW, to stimulate a biological process. Just as plants exposed to normal sunlight synthesize carbohydrates in the process of photosynthesis, laser light stimulates the formation and release of the body's own chemical compounds. In LLLT, the infrared laser energy has a stimulating effect on tissues because it increases cellular energy. The laser light energy becomes absorbed by the tissues, stimulating their metabolic processes.

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Q. How do you use the laser for therapy? Is it difficult?

A. Treatment is simple and painless. It is similar to holding a flashlight close to the skin and shining the light on it. There is no sensation of pain, nor is there an increase in temperature from the laser. Treatment times vary based upon the size of the area to be treated, and the output power of the laser. Most treatments take 5-10 minutes, although the treatment of acupuncture points takes only 1-2 minutes per point.

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Q. Are there any negative effects from LLLT?

A. In all the years that low level lasers have been tested in research and clinical applications, no adverse side effects or negative impacts have been reported. This is why the U.S. Food and Drug Administration (FDA) classifies lasers like the Luminex® Laser Therapy Systems as "Non-Significant Risk" devices, requiring a minimum of safety precautions. The only precaution is that which discourages direct viewing of the laser beam. Care should be exercised not to stare into the laser beam or to point it at the eyes, and the use of safety glasses is recommended.

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Q. How long have low level lasers been used for therapy?

A. Low level lasers have been used by doctors in hospitals and clinics in Europe on both humans and animals since the early 1970's. In fact, the first studies reporting positive effects of laser on wound healing in rats were reported by the Hungarian researcher Andre Mester as early as 1968. In the United States, therapeutic lasers have been used by veterinarians since the late 1970's. Just recently the U.S. FDA has given marketing approval to laser therapy devices for human use in the United States.

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Q. In simple terms, what does LLLT do?

A. A huge amount of research data has been collected on the effects of laser therapy (over 2000 double-blind studies) both in laboratory and clinical settings. The following excerpts demonstrate some of the most significant results: (We would be happy to send you a bibliography if you would like to do some in-depth reading.)

  1. Wound healing is significantly improved by low level laser therapy, even non-healing wounds, thought to be due to the increased level of collagen brought about by laser treatment. Collagen, the chief constituent of connective tissue, is recognized as the most important ingredient in wound healing. See Dr. Andre F. Mester and Dr. Adam Mester, LLLT and Wound Healing, John Wiley and Sons, Ltd., 1989.

  2. Increases in blood flow by means of capillary and arterial widening of the lumen of blood vessels, vasodilatation. See Dr. Toshiaki Kami, Effects of Low Power Diode Lasers, Annals of Plastic Surgery, Vol. 14, No. 3, March 1985. (Dr. Kami's work also showed that the laser light significantly increased the formation of new capillary paths in treated areas, which resulted in increased circulation.)

  3. Marked improvement in re-establishment of the lymphatic system after trauma, resulting in reduction of swelling. This is due to the evacuation of dirty proteins by the regenerated lymphatic vessels. See Dr. P.C. Lieven, The Influence of Laser on the Lymphatic Systems, Presented at the American Society for Laser Medicine and Surgery, Eight Annual Meeting, Dallas, Texas 4/25-4/28, 1988)

  4. Laser light stimulates release of the body's own killing chemicals such as endorphins and enkephalins
    Facilitating natural, long lasting pain relief. Dr. Wolfgang Rauermeister, Director of Pain Control Center at Parkwood Hospital, Massachusetts, USA has provided the best explanation of these pain reduction capabilities:

    "The laser light stimulates the release of the body's own pain killing chemicals such as endorphins and enkephalins from the brain, adrenal glands, and other areas, thus facilitating long lasting pain relief."


Low level laser therapy is an effective therapy, working in harmony with the body's own healing and relieving mechanisms. There are no harmful side effects reported from laser therapy.

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