How Does the FAC Technology Improve the Efficiency of the 808 Diode Laser

painless face hair removal machine FAC laser stack large spot size

In the world of laser hair removal, precision, power, and safety are non-negotiable. At Mico Aes, we integrate the latest optical innovations into our machines to deliver outstanding treatment results. One such game-changing feature in our 808nm diode laser hair removal machines is FAC technology, short for Fast Axis Collimation.

But what is FAC, and why does it matter so much? Let’s break it down.


What Is FAC Technology?

Every laser diode emits light beams that naturally spread out—especially in the fast axis direction, where divergence is strongest. This can result in an unfocused beam, lower energy density, and inefficient skin penetration.

FAC (Fast Axis Collimation) is a lens system that straightens the beam emitted by each diode. It collimates the fast axis of the laser beam, making the light more parallel, narrow, and precise.

FAC (Fast-Axis Collimation) technology improves the efficiency of the 808 nm diode laser primarily by enhancing the beam quality and energy transmission, which leads to better overall laser performance and output power.


Why FAC Technology Matters in 808nm Diode Lasers

At Mico Aes, our 808nm diode lasers equipped with FAC lenses deliver optimized performance in the following ways:

Superior Beam Collimation and Quality

FAC lenses are aspheric cylindrical lenses with a high numerical aperture (NA ~0.8) that collimate the fast-axis output of the laser diode. This collimation reduces the beam divergence in the fast axis, producing a beam with a smaller divergence angle and higher uniformity. This improved beam quality allows for more precise focusing and better coupling into optical fibers or delivery systems, which is critical for applications like hair removal.

Higher Transmission and Energy Conversion

With a collimated beam, more laser power is concentrated and directed exactly where it’s needed—at the hair follicle. This improves energy delivery per shot, leading to better clinical outcomes and less wasted energy.

FAC lenses have very high transmission rates (up to 99%) across the laser’s spectral range. This means less energy is lost inside the optical system, resulting in more efficient light delivery and higher output power from the diode laser.

Improved Light Guide and Uniformity

Compared to traditional diode lasers without FAC, the light guide performance can increase by about 25%, and light uniformity improves by approximately 20%. This means the laser energy is distributed more evenly and efficiently, enhancing treatment effectiveness and reducing wasted energy.

Stable and Reliable Output

The collimated beam from FAC technology maintains stable output power over a range of operating conditions, improving reliability and lifespan of the diode laser. Reduced thermal and optical losses also contribute to longer operational lifetimes and less maintenance.

Deeper and More Consistent Penetration

The collimated beam penetrates deeper into the dermis where hair follicles reside, ensuring more permanent hair reduction with fewer sessions.

Faster Treatment Times

Because of higher precision and focused energy, the treatment area can be covered more effectively, reducing session duration. Clinics can serve more clients per day, boosting business efficiency.


FAC + Mico Aes: Smarter Laser Hair Removal

Our FAC-equipped 808nm diode laser machines represent the latest in optical engineering. Combined with our signature features—such as Meanwell power supplies, 500W TEC semiconductor cooling, and 6–8L water tanks—Mico Aes machines deliver powerful, precise, and reliable performance trusted by beauty professionals worldwide.


Why Choose Mico Aes 808nm Diode Lasers?

  • 🌍 Exported to over 80 countries
  • 🛡 Certified by CE, ISO13485, ROHS.
  • 🔧 Designed for stability, long-term use, and low maintenance
  • 💼 Perfect for distributors, resellers, clinics, and med spas seeking advanced hair removal solutions

Ready to upgrade your laser technology?
Contact Mico Aes today and discover how FAC-powered 808nm diode lasers can elevate your beauty business.

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About The Author

Ella from Mico Aes

Ella Chan

Welcome to my blog channel, where I bring over 10 years of expertise in the beauty machine industry. From salon machines to beauty devices for home use, I’ll guide you through the latest advancements, provide reliable information, and help you make informed decisions. Join me on this transformative journey to unlock your true beauty potential with the power of technology.

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About Mico Aes

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Mico Aes is a professional beauty machine manufacturer for over 15 years in China, we have all types of machines for med spa, IPL and laser hair removal machines, hifu machines, emsculpting machines, cryolipolysis machines, pico laser machines, rf machines, cavitation machines, hydro facial machines and led light therapy devices and some personal use beauty devices. More details, or contact us.

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