FINEBEAM Dual — Q-Switched and Long Pulse Nd:YAG Laser
Nd:YAG laser platform combining ultra-fast Q-Switched mode (<10ns) with Long Pulse mode (0.3-300ms) in a single system. 1064nm and 532nm wavelengths for complete treatment of pigmented lesions, multicolor tattoo removal, vascular applications, and permanent hair removal. Active resonator technology with Flat Top-Hat beam profile for predictable results.
Two Operating Modes, One Complete Platform
FINEBEAM Dual offers clinical flexibility through integration of Q-Switched and Long Pulse modes with both wavelengths.
Q-Switched Mode (QSW)
Ultra-short pulses (<10ns) for pigment and tattoo ink fragmentation through photoacoustic effect
Long Pulse Mode (LPL)
Long pulses (0.3-300ms) for selective photothermolysis, hair removal, vascular treatments, and thermal rejuvenation
Dual Wavelength
1064nm for deep pigments and all ink colors, 532nm for superficial pigments and red/orange ink
Flat Top-Hat Beam
Uniform beam profile for consistent energy distribution and predictable results
Nd:YAG Technology: Laser-Tissue Interaction Fundamentals
Understanding mechanisms of action enables optimal parameter selection for each indication.
Target Chromophores and Selectivity
The 1064nm Nd:YAG laser is absorbed by melanin, hemoglobin, and artificial pigments in tattoo ink. The melanin/hemoglobin absorption ratio allows selective treatment of pigmented lesions in the presence of normal vascularization. The 532nm wavelength (KTP, obtained through frequency doubling) has increased absorption in melanin and hemoglobin, being ideal for superficial lesions and vascular components.
Photoacoustic Effect vs. Photothermolysis
In Q-Switched mode, pulses under 10ns deliver energy faster than the thermal relaxation time of pigment particles (~1μs). This results in mechanical shock waves that fragment pigment into particles small enough for macrophage clearance — photoacoustic effect. In Long Pulse mode, selective photothermolysis heats the target (hair follicle, blood vessel) long enough for thermal denaturation without mechanical fragmentation.
Active Resonator with Pockels Cell
FINEBEAM Dual uses active Q-switching via Pockels cell, as opposed to passive systems with saturable absorber. Advantages include: precise control of pulse trigger timing, consistent energy per pulse at each trigger, short and stable pulse duration (<10ns), and extended lifetime without frequently replaced consumables.
Q-Switched Mode: Precision Photoacoustic Fragmentation
Ultra-short pulses for pigmented lesion treatment and tattoo removal through controlled mechanical effect.
Multicolor Tattoo Removal
1064nm treats black, blue, and green ink (most common). 532nm addresses warm colors: red, orange, yellow. Multiple sessions (6-12 on average) at 6-8 week intervals allow progressive elimination. Professional tattoos require more sessions than amateur ones due to higher ink density.
Pigmented Lesions
Congenital melanocytic nevi (Ota, Ito), solar lentigo, café-au-lait macules, and other benign pigmented lesions respond to Q-Switched treatment. Wavelength selection depends on lesion depth: 532nm for epidermal pigment, 1064nm for dermal pigment.
Clinical Indications — Q-Switched Mode
Clinical note: Tattoos with white ink, light pink, or fluorescent colors may exhibit resistance or paradoxical color changes. Test patch evaluation is recommended.
Long Pulse Mode: Selective Photothermolysis
Long pulses for permanent hair removal, vascular treatments, and skin rejuvenation through controlled heating.
Permanent Hair Removal
Vascular Treatments
Laser Genesis
Pseudofolliculitis
Clinical Indications — Long Pulse Mode
LIOB Rejuvenation: Subclinical Optical Breakdown
Advanced technology for neocollagenesis stimulation without ablation or visible downtime.
LIOB Mechanism
LIOB (Laser-Induced Optical Breakdown) occurs when laser intensity exceeds the tissue ionization threshold, creating microplasmas and cavitation cavities. At subcritical parameters, this phenomenon induces controlled micro-injuries that trigger the healing response and extracellular matrix remodeling, without visible effects on the skin surface.
LIOB Clinical Applications
Protocol and Expectations
LIOB treatment requires multiple sessions (4-6 on average) at 2-4 week intervals. Results are gradual and cumulative. It is not a substitute for ablative procedures in cases of severe laxity or deep scars, but offers a valuable option for patients who do not want downtime.
Flat Top-Hat Profile: Uniform Energy Distribution
Beam quality determines treatment uniformity and result predictability.
Gaussian vs. Flat Top-Hat
The Gaussian profile (most lasers) has maximum energy in the spot center and decreases exponentially toward the edges. This means the center receives excessive fluence while edges are undertreated. The Flat Top-Hat profile of FINEBEAM Dual ensures constant fluence across the entire spot surface.
Clinical Implications
- Reduced scarring risk in central spot zone
- More uniform treatment of tattoos and pigmentation
- More predictable and reproducible results
- Fewer sessions required for complete clearance
Safety and Skin Type Adaptation
The 1064nm wavelength offers a favorable safety profile for a wide range of skin types.
Skin Types I-III
Skin Types IV-V
Skin Type VI
SNJ: Medical Laser Technology Expertise
About SNJ Co., Ltd.
- Founded: 1998, Seoul, South Korea
- Specialization: Medical laser equipment manufacturer (CO₂, Nd:YAG, Er:YAG)
- Experience: Over 25 years in laser technology development
- Presence: Over 600 medical institutions in 30+ countries
- Portfolio: FINEXEL (CO₂), FINEBEAM (Nd:YAG), FINEXEL Er (Er:YAG)
Certifications and Compliance
- CE Medical — European Conformity Class IIb
- KFDA — Korean medical device approval
- ISO 13485 — Quality management system
- GMP — Good Manufacturing Practices
Complete Technical Specifications
FINEBEAM Dual Nd:YAG Laser System
| Wavelengths | 1064nm / 532nm |
| Laser Type | Nd:YAG with active resonator |
| Technology | Pockels cell (active Q-switch) |
| Q-Switched Pulse Duration | < 10ns |
| Long Pulse Duration | 0.3 - 300ms |
| Energy per Pulse (QSW) | Up to 3.5J |
| Energy per Pulse (LPL) | Up to 60J |
| Peak Power (QSW) | 350MW |
| Repetition Rate | 1-10Hz (QSW) / 1-5Hz (LPL) |
| Spot Size | 2-10mm (adjustable) |
| Beam Profile | Flat Top-Hat |
| Cooling System | Integrated air cooling |
| Certifications | CE Medical, KFDA |
Frequently Asked Questions — Clinical Perspective
What does Q-Switched mean and why does pulse duration matter?
Q-Switched refers to a rapid resonator cavity switching technique that allows energy accumulation and release in an extremely short pulse (<10ns). At this duration, energy is delivered faster than the thermal relaxation time of the target (pigment or ink), producing a photoacoustic effect that fragments particles without heating surrounding tissue. This mechanism is essential for tattoo removal and deep pigmentation treatment with minimal scarring risk.
What is the difference between 1064nm and 532nm in clinical practice?
The 1064nm wavelength penetrates deeper into the dermis (4-6mm) and is absorbed by melanin and black/blue/green ink. It is preferred for dermal pigmented lesions and tattoos with dark colors. 532nm has more superficial penetration (1-2mm) and is strongly absorbed by melanin, hemoglobin, and red/orange/yellow pigments. It is used for epidermal lesions, warm-colored tattoos, and superficial vascular treatments.
What is LIOB technology and how does it work?
LIOB (Laser-Induced Optical Breakdown) is a phenomenon where ultra-short, focused laser pulses create plasma microcavities in tissue without macroscopic ablation. At subcritical parameters, FINEBEAM Dual can induce controlled micro-injuries in the dermis that trigger the healing cascade and neocollagenesis. The result is dermal rejuvenation without downtime or visible crusting, similar to the concept of 'laser toning' but with a better-defined physical mechanism.
Can FINEBEAM Dual safely treat melasma?
Melasma remains one of the most challenging indications in laser dermatology. FINEBEAM Dual offers the option of 'laser toning' with 1064nm Q-Switched at sub-photothermolyic fluences (0.5-2.5 J/cm²) that can reduce melanin load without triggering excessive inflammation. However, results are variable, multiple sessions are required, and there is risk of mottled hypopigmentation or rebound. Treatment should be integrated into a comprehensive protocol with strict sun protection and topical depigmenting agents.
What advantages does the Flat Top-Hat beam profile offer?
The classic Gaussian profile has maximum energy in the center and decreasing energy at the periphery, creating zones of central overtreatment and marginal undertreatment. The Flat Top-Hat profile distributes energy uniformly across the entire spot surface, ensuring constant fluence at every point. The result: more uniform treatment, reduced risk of adverse effects in the central spot zone, and more predictable results in tattoo removal and pigmentation treatments.
How does FINEBEAM Dual compare to other Nd:YAG platforms?
FINEBEAM Dual differentiates itself through: (1) Active resonator with Pockels cell for genuine Q-Switched pulses under 10ns, compared to passive systems that offer longer pulses; (2) High energy per pulse (3.5J QSW, 60J LPL) for treating a wide range of indications; (3) Integrated Long Pulse mode for clinical versatility; (4) Flat Top-Hat profile for uniformity. Manufacturer SNJ has over 25 years of expertise in medical laser technology.
Clinical Evaluation and Demonstration
For practical demonstrations, detailed technical specifications, or discussions about integrating FINEBEAM Dual into your practice, contact the aEstet Technology team.
We are the authorized SNJ distributor in Romania. We offer technical consultation for physicians, certified operator training, and service support nationwide.