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RESEARCH LIBRARY

Explore the Research

Dive into the science behind photobiomodulation, lasers, LEDs, and more – with cited sources.

Laser Science + Photobiomodulation

Summary: Photobiomodulation (PBM) and low-level laser therapy use carefully dosed light energy to encourage the body’s natural regenerative processes. When specific wavelengths and power levels are applied within the therapeutic window, PBM enhances mitochondrial function, promotes tissue repair, and supports systemic balance. These outcomes are substantiated by extensive peer-reviewed literature spanning decades of research.

Laser Light vs LED Light

LEDs are not Lasers

Make no mistake, LEDs and light therapy devices are not lasers. The differences are numerous and sit on opposite sides of the spectrum in both physics and biological performance (Moskvin 2017, NIH). The internet includes many low-cost LED and broad light devices that make health, therapeutic, and cosmetic claims, yet the evidence for real laser-like effects is weak. The good news is that such devices are generally benign. The drawback is that outcomes are often limited.

​By contrast, therapeutic lasers have a substantial evidence base supporting meaningful physiological effects and clinical outcomes across tissue types and indications (Moskvin 2017, NIH).

​Bottom line in technical terms: lasers emit coherent light, while LEDs and most light therapy devices emit incoherentlight (Azo Optics, overview; Optica, coherence in optics; Wiley, laser physics fundamentals).​

Coherent vs Incoherent Light 

The technical explanation of laser versus light or LED devices is defined as coherent versus incoherent light. The differences are literal day and night (Azo Optics, overview; Optica, coherence in optics; Wiley, laser physics fundamentals; Geeks for Geeks, coherent source).​

Coherent light has waves that are in phase and monochromatic, meaning a single wavelength or color.Incoherent light has waves that are out of phase and contain many colors.Lasers are coherent light sources, while flashlights, bulbs, and LEDs are incoherent.

  • ​Coherent Light: Waves are in phase, oscillating together and maintaining a constant phase difference. All photons share the same wavelength and frequency. Coherent beams are used in holography, laser surgery, and optical communication.
  • Incoherent Light: Waves are out of phase with random and uncorrelated relationships. Photons have different frequencies and wavelengths, producing mixed colors. Incoherent sources are used for illumination, imaging, and vision.

FDA Clearance

Wavelengths, Nanometers, Electron Transport Chain + Mitochondrial Activation  

Light wavelengths are categorized into three primary bands:

  • Ultraviolet Light (0 – 400 nm): Known as “detrimental light.” At 350–400 nm these wavelengths are used in medical and industrial lasers for precision cutting, cauterizing, and engraving. Below 350 nm the light becomes intensely focused and is used for metal cutting and similar high-temperature applications.
  • Visible Light (400 – 780 nm): Referred to as “living light,” this range includes violet through red wavelengths and supports biological activity and cellular communication.
  • Infrared Light (≥ 780 nm): Invisible to the eye, infrared light penetrates deeper tissue layers and interacts strongly with cellular structures to promote regenerative processes.

Each wavelength interacts with biological systems in distinct ways, corresponding to specific chromophores and mitochondrial complexes that generate energy within the cell.

Photonic Stimulation of Cellular Energy

The four mitochondrial complexes form the foundation for cellular energy regeneration. When stimulated by their corresponding wavelengths, these enzymes restore electron flow and drive ATP synthesis. Violet and blue light activate the early complexes, green light stabilizes mid-chain reactions, and red to infrared light energizes the terminal stages for full-spectrum ATP production.

This cooperative stimulation enhances mitochondrial efficiency, improves oxygen metabolism, and supports regeneration in both surface and deep tissues.

Light + Chromophores

Chromophores—cytochromes, flavoproteins, and porphyrins—serve as the light receptors that convert photons into biochemical energy. Porphyrins absorb strongly between 400 and 420 nm, while red light around 670 nm facilitates nitric-oxide release, improving circulation and oxygen use (PMC 6685747). The synchronized absorption of these wavelengths forms the photochemical basis of mitochondrial regeneration.

From Light to Biochemical Energy

Sequential activation of the ETC increases mitochondrial membrane potential and converts adenosine diphosphate (ADP) to adenosine triphosphate (ATP). Infrared wavelengths at 808 nm penetrate up to 5 cm into soft tissue, extending this energy process deep into muscles, nerves, and connective structures. This multi-level photonic stimulation unites visible and infrared light to create both local and systemic regenerative outcomes.

Clinical + Systemic Implications

Activating all four mitochondrial complexes through wavelength-specific light has been shown to enhance healing, neurological recovery, and pain reduction. These effects arise from improved mitochondrial efficiency and reduced oxidative stress across organ systems. The full-spectrum photobiomodulation used in advanced systems such as the PRO VX enables simultaneous activation of every ETC complex, optimizing ATP output and overall health regeneration.

Photonic Stimulation of Cellular Energy

The four mitochondrial complexes form the foundation for cellular energy regeneration. When stimulated by their corresponding wavelengths, these enzymes restore electron flow and drive ATP synthesis. Violet and blue light activate the early complexes, green light stabilizes mid-chain reactions, and red to infrared light energizes the terminal stages for full-spectrum ATP production.

This cooperative stimulation enhances mitochondrial efficiency, improves oxygen metabolism, and supports regeneration in both surface and deep tissues.

Light + Chromophores

Chromophores—cytochromes, flavoproteins, and porphyrins—serve as the light receptors that convert photons into biochemical energy. Porphyrins absorb strongly between 400 and 420 nm, while red light around 670 nm facilitates nitric-oxide release, improving circulation and oxygen use (PMC 6685747). The synchronized absorption of these wavelengths forms the photochemical basis of mitochondrial regeneration.

From Light to Biochemical Energy

Sequential activation of the ETC increases mitochondrial membrane potential and converts adenosine diphosphate (ADP) to adenosine triphosphate (ATP). Infrared wavelengths at 808 nm penetrate up to 5 cm into soft tissue, extending this energy process deep into muscles, nerves, and connective structures. This multi-level photonic stimulation unites visible and infrared light to create both local and systemic regenerative outcomes.

Clinical + Systemic Implications

Activating all four mitochondrial complexes through wavelength-specific light has been shown to enhance healing, neurological recovery, and pain reduction. These effects arise from improved mitochondrial efficiency and reduced oxidative stress across organ systems. The full-spectrum photobiomodulation used in advanced systems such as the PRO VX enables simultaneous activation of every ETC complex, optimizing ATP output and overall health regeneration.

Amount of Laser Diodes

A laser diode is the actual light source emitted from a laser. Health lasers are classified as Class 3B, meaning the combined output of all diodes in a single laser cannot exceed 1599 mW of total power.

​Using multiple diodes within one system significantly enhances the overall health outcome. Each diode contributes energy at its specific wavelength, and when multiple diodes are combined, the total biological benefit multiplies without generating excess heat.​

Research demonstrates that visible laser diodes (400 – 780 nm) should remain below 13 mW per diode to avoid burning tissue. The ideal operating power for visible diodes is 10 mW each. Increasing the number of diodes increases effectiveness proportionally without risk.

​Infrared laser diodes operate beyond 780 nm, producing invisible light that penetrates several centimeters into the body. These wavelengths can safely exceed visible-light power levels and deliver the deep-tissue energy necessary for advanced regenerative effects. Research shows that 1000 mW of infrared power provides optimal penetration and therapeutic results (Chiropractic Economics, Issue 12, July 2024 – Francisco Cidral, “Photobiomodulation May Offer Effective Pain Management,” July 23 2024*).

The Full-Spectrum Approach

The most effective configuration combines all visible wavelengths with infrared diodes, uniting surface and deep-tissue photobiomodulation. The ideal full-spectrum laser integrates 1000 mW infrared power with multiple visible-spectrum diodes (each at 10 mW).

The PRO VX is the first and only FDA-cleared full-spectrum laser, designed precisely on these parameters. Because of this configuration, the PRO VX can penetrate several inches into the body and disperse light several inches in diameter within seconds of use.

Pulsed Frequencies

Precision energy through rhythm + resonance

Music is created and heard through frequencies. Chakras are frequencies. Your telephone, radio, and television all function through frequencies. Every living thing on Earth, including the planet itself, oscillates at a specific frequency. This includes every tissue in every human, animal, and plant, as well as every bacterium, virus, protozoa, parasite, fungus, and mold.

​If you want to “dial in” your laser to perfection, you need to use pulsed frequencies that correspond to what you want to enhance or eliminate.

The Blue Honest PRO VX incorporates 736 total frequencies, including the top eight frequencies in every setting. Laser frequencies are measured in Hertz (Hz), representing the number of laser pulses emitted per second. A higher frequency means more pulses per second.

Power 

Balancing energy, precision, and performance

A laser diode is the light source within every laser. Health lasers are classified as Class 3B, which means the combined output of all diodes in one laser cannot exceed 1599 mW.

Using multiple diodes within a single laser significantly increases the beneficial health outcome.​

Visible laser diodes, ranging from 400 nm to 780 nm, should not exceed 13 mW, as higher outputs may cause burns. The ideal output for visible diodes is 10 mW. Multiple diodes of the same wavelength can be combined without producing excess heat or cumulative damage. For example, if one 635 nm red diode provides a certain therapeutic benefit, four 635 nm diodes at the same output would increase that benefit fourfold without increasing the individual diode power.​

Infrared laser diodes, with wavelengths above 780 nm, are invisible to the eye and can safely operate at higher power levels. Research demonstrates that 1000 mW is the ideal power level to achieve optimal tissue penetration for infrared light.Source: CE Issue 12, July 2024, “Photobiomodulation May Offer Effective Pain Management,” Francisco Cidral, July 23, 2024.

Timing (Arndt–Schulz Law)

Matched to Power​

When it comes to laser therapy, more is not better. Lasers operate on a bell curve, meaning there is a precise point of optimal exposure time for each protocol. Applying light for too short a period will not achieve a therapeutic effect, while too long of an exposure can cancel the intended benefits.

​Although excessive laser exposure will not cause harm, it does not improve results. The goal is to deliver the ideal duration where the laser’s energy produces the maximum biological response.

To calculate the perfect timing for any protocol, it is necessary to know the wavelengths (nanometers) being used, the power output of each diode, the applied frequencies, and how many times the same placement is used. Timing must always be matched to power.

The Arndt–Schulz Law (Biphasic Dose Response)

The Arndt–Schulz Law, also referred to as the Biphasic Dose Response, explains that living tissue responds positively only within an optimal dose range. Too little light produces no measurable effect, while too much can suppress or neutralize the desired response.

Every biological system has a specific stimulation window. When light is delivered within this optimal range, the maximum therapeutic benefit is achieved. Studies of wound healing have demonstrated this clearly — doses that were too low had no effect, and those that were too high delayed recovery, while the properly timed exposure resulted in faster healing.

Source: International Society of Hair Restoration Surgery Forum

Light Dosimetry

Proper calibration of irradiance and exposure time is critical for consistent, effective outcomes. This process, known as light dosimetry, ensures that tissues receive the correct amount of light energy without overexposure.

Accurate dosimetry allows for microbial and biofilm inactivation while minimizing any risk to surrounding healthy tissue. By matching timing precisely to power and wavelength, photobiomodulation occurs at its highest level of efficiency.Source: PMC9941239

Placement + Settings

Application protocols, timing, and coordination​

Figuring out correct placement, timing, and combination of laser settings can take years of research and testing. Fortunately, this work has already been done for you.​

You would not want to increase energy before going to bed, just as you would not want to be in a sleepy and relaxed state before a soccer game. Understanding when and how to apply each laser setting is essential to achieving the best results.

If you have a specific area of pain, identifying the correct placement is simple. However, when pain or inflammation is systemic and affects multiple areas throughout the body, the correct approach is not always obvious. There are six key placement points that address the body systemically, and they are not the same as the areas where pain is felt.

While pain and inflammation are among the most straightforward areas to support, there are hundreds of placement examples that require precise understanding. Each has its own protocol, duration, and power setting that influence the body’s overall response.​​

Every Blue Honest PRO VX includes a comprehensive binder with detailed diagrams, explanations, and step-by-step placement instructions for every setting and application. This includes specific placement guidance for both human and animal protocols.

Humans & Animals

Full-Spectrum Applications in Humans + Animals​

The PRO VX laser system was developed for both human and animal health applications, combining a full-spectrum wavelength array with pulsed frequency delivery. This design allows precise control for tissue repair, immune modulation, neurological support, and systemic recovery. Photobiomodulation (PBM), also referred to as low level laser therapy (LLLT), uses coherent light to activate mitochondrial energy production and restore normal cellular function.

Research across species shows that PBM enhances healing, reduces inflammation, and improves performance when correct parameters are used. The same biological mechanisms observed in humans—ATP stimulation, collagen synthesis, and microvascular regulation—are seen in animal studies demonstrating faster recovery and decreased pain (PMC9951699; PubMed30243364).

Herbs + Plants

Estheticians, Cosmetic, Skin, + Weight Applications​

This is a special feature that exists only in the PRO VX laser. Herbs and plants use different wavelengths (nm) and frequencies than those of humans and animals. The regeneration chemical in humans and animals is called adenosine triphosphate (ATP). The regeneration chemical produced in plants is chlorophyll. They absorb different wavelengths from the sun and oscillate at different frequencies.

This PRO VX feature is especially interesting for estheticians, herbalists, therapists, naturopaths, natural healers, or anyone wanting to enhance lotions and creams, or get the most out of the clean foods and supplements they take.

Go to our Wavelengths / Nanometers research page for more information on these processes.

​In the photosynthetic electron-transfer reactions (also called the “light reactions”), energy derived from sunlight energizes an electron in the green organic pigment chlorophyll, enabling it to move along an electron-transport chain in the thylakoid membrane in much the same way that an electron moves along the respiratory chain in mitochondria. Chlorophyll obtains its electrons from water (H₂O), producing O₂ as a by-product. During this process, H⁺ is pumped across the thylakoid membrane, and the resulting proton gradient drives the synthesis of ATP in the stroma. As the final step, high-energy electrons are loaded (together with H⁺) onto NADP⁺, converting it to NADPH. All these reactions occur within the chloroplast (NCBI Bookshelf, NBK26819).

Chlorophyll

Chlorophyll benefits include helping fight cancer, improving liver detoxification, speeding up wound healing, improving digestion and weight control, and protecting skin health.​ The primary reason chlorophyll is considered a superfood is because of its strong antioxidant and anticancer effects. Chlorophyll benefits the immune system because it’s able to form tight molecular bonds with certain chemicals that contribute to oxidative damage and diseases like cancer or liver disease.

Chlorophyll + Light

Chlorophyll is an essential molecule for photosynthesis in plants. It first absorbs energy from sunlight and then transfers that energy to the reaction centers to bind water and carbon dioxide into glucose.

Chlorophyll-a absorbs the wavelengths of violet-blue and red light and functions as a primary electron donor during the electron transport chain in photosynthesis.

Chlorophyll-b is an accessory pigment that transfers the energy absorbed by it to chlorophyll-a, increasing absorption over a wider range of wavelengths (Barb, M.S., Human Physiology & Biochemistry, Central Michigan University, 2017).

As seen from the chlorophyll absorption graph, Chlorophyll-a absorbs light best at 670 nm (red) and 420 nm (violet), while Chlorophyll-b absorbs light best at 470 nm (blue) and 635 nm (red).

Plants + Lasers

Light is vital to a plant’s growth and survival. Flowering plants use the full spectrum of visible light, but some wavelengths are more important than others. The right light spectrum, intensity, and duration work together to trigger flowering, growth, and reproduction.

Sunlight supplies the full spectrum of wavelengths, but plants do not need every color to grow well. Their most essential wavelengths occur at either end of the visible spectrum. At the blue end, plants receive materials for healthy foliage growth, while the red end influences fruiting and flowering.

Early research on different light spectra found that red and blue wavelengths offer the best support for photosynthesis, the process plants use to transform light into energy for growth.

  • Blue light (405–470 nm)Encourages vegetative growth through strong root systems, chlorophyll production, and intense photosynthesis. Blue light is often used during early plant growth, such as seedling stages, when flowering is not desired.
  • Red light (635–670 nm)Encourages stem growth, flowering, and fruit production while increasing chlorophyll production. Red wavelengths are naturally more prevalent in sunlight during the shorter days of fall and winter (Plant and Soil Sciences E-Library).

Frequencies Enhancing Chlorophyll at 664 nm

The absorption peak at 664 nm belongs to the Qy(0-0) band of Chlorophyll-a. The observed absorption spectrum with this transition peak confirms the monomer structure of the molecule.

Ultrafast spectroscopy reveals vibrational mode frequencies and amplitudes contributing to both ground and excited-state wave-packet motion, confirming energy transfer efficiency in chlorophyll systems (PMC3175064).