Laser surgical systems are used for cutting, coagulating, and ablating tissue with extreme precision, minimizing damage to surrounding areas. These systems typically operate in the near-infrared range (e.g., 1.06 µm for Nd:YAG or 2.94 µm for Er:YAG), requiring reliable optics. Critical components include focusing lenses, fiber delivery optics, and protective windows designed for sterilization and thermal stability.
Medical
Medical systems increasingly rely on photonic technologies because they offer high accuracy, non-contact operation, and real-time feedback, which are critical for patient safety and treatment effectiveness.
From surgical lasers to diagnostic imaging, photonics provides solutions that reduce recovery times, improve outcomes, and enable new treatment modalities. These technologies are immune to electromagnetic interference, allow precise energy delivery, and support compact, portable designs for clinical environments.
Altechna supplies high‑performance optical components and assemblies that ensure stable beam delivery, high optical quality, and long‑term reliability, enabling dependable operation in sensitive medical environments.
Medical laser systems
Trusted in precision medical laser applications
Laser Surgical Systems
Aesthetic Systems for Skin and Hair Treatment
Aesthetic laser systems perform procedures such as hair removal, skin resurfacing, and pigmentation correction using controlled light energy. They often use diode lasers (800–810 nm), Nd:YAG (1064 nm), or Er:YAG (2.94 µm), demanding optics that provide precise beam shaping and uniform energy distribution. Key optical elements include beam expanders, mirrors, and AR-coated windows optimized for high repetition rates and patient safety.
Ophthalmic Surgery Systems
Ophthalmic lasers enable delicate eye surgeries such as LASIK, cataract removal, and retinal treatments with micron-level accuracy. These systems commonly operate at 1.06 µm (Nd:YAG), requiring optics with exceptional precision, NIR coatings, and minimal scatter. Essential components include high-quality lenses, beam splitters, and protective windows that maintain optical clarity and alignment under stringent medical standards.
criteria
Critical performance criteria
Spectral selectivity
Precise wavelength control ensures that laser energy interacts only with targeted tissue (e.g., melanin, water, or corneal layers), minimizing collateral damage and improving treatment safety.
Great high-power performance
Medical lasers often operate at high peak powers for cutting or ablating tissue; optics must withstand these energy levels without damage to guarantee uninterrupted surgical procedures.
Good beam quality
Uniform and well-focused beams are essential for accurate incisions and controlled energy delivery, which directly impacts treatment precision and patient outcomes.
Visual quality
Clear, defect-free optics are critical for surgical visualization and diagnostic imaging, ensuring clinicians have an unobstructed and accurate view during procedures.
Solutions
Our solution tailored for medical application
Nd, Ho, Tm, CTH doped YAG, Alexandrite and Er:Glass crystals
Spectral performance
R>99.9%, R<0.1%
Wavefront distortion
<L/10 @633 nm
Surface quality (S-D)
10-5
Durability
MIL-F-48616 (temperature, solubility & cleanability)
LIDT
– HR coated Nd:YAG: >125 J/cm² @1064 nm, 10 ns
– AR coated Er:glass: 98 J/cm² @1535 nm, 20 ns, 100 Hz, R-on-1
– AR coated Ho/Tm:YAG: >25 J/cm² @2090 nm, 10 ns, 100 Hz (undamaged under highest testing fluence)
– AR coated CTH:YAG: 6.2 kJ/cm² @2080 nm, 200 us
– HR coated Alexandrite: 42 J/cm² @755 nm, 10 ns
High-power mirrors for 0.5-2 µm range
Durability per
MIL-C-48497A (abrasion and adhesion)
MIL-F-48616 (temperature, solubility&cleanability)
Coating performance
R>99,95% for 0.5-1 µm range and R>99,99% for 1-2 µm range
LIDT
>40 J/cm² @532 nm, 10 ns, 100 Hz, 1000-on-1
>90 J/cm2 @1064 nm, 10 ns, 100 Hz, 1000-on-1
>80 J/cm2 @1573 nm, 10 ns, 100 Hz, 1000-on-
>35 J/cm2 @2090 nm, 10 ns, 100 Hz, 1000-on-1 (undamaged under max testing fluence)
Wavefront distortion
<L/10 @ 633 nm
SQ per MIL
10-5
High-power lenses and windows for 0.5-2 µm range
Durability per
MIL-C-48497A (abrasion and adhesion)
MIL-F-48616 (temperature, solubility & cleanability)
MIL-STD-810G (salt-fog)
AR coating performance
R<0.05%
LIDT
>30 J/cm² @532 nm, 10 ns, 100 Hz, 1000-on-1
>50 J/cm2 @ 1064 nm, 10 ns, 100 Hz, 1000-on-1
>50 J/cm2 @ 1535 nm, 10 ns, 100 Hz, 1000-on-1 (undamaged under max testing fluence)
>30 J/cm2 @ 2090 nm, 10 ns, 100 Hz, 1000-on-1 (undamaged under max testing fluence)
Wavefront distortion
<L/10 @ 633 nm
SQ per MIL
10-5
High-power beamsplitters and dichroics for 0.5-2 µm range
Durability per
MIL-C-48497A (abrasion and adhesion)
MIL-F-48616 (temperature, solubility&cleanability)
Coating performance
R>99,95% / R<0.1% / R±0,05% for 0.5-1 µm range
R>99,99% / R<0.1% / R±0,05% for 1-2 µm range
LIDT
>17 J/cm² @532, 10 ns, 100 Hz, 100-on-1 (for HT@532 nm zone)
>25 J/cm2 @ 1064 nm, 10 ns, 100 Hz, 1000-on-1 (for HT@1064 nm zone)
>80 J/cm2 @ 1535 nm, 10 ns, 100 Hz, 1000-on-1 (for 98.5% beam splitter)
>35 J/cm2 @ 2090 nm, 10 ns, 100 Hz, 1000-on-1 (undamaged under max testing fluence)
Wavefront distortion
<L/10 @ 633 nm
SQ per MIL
10-5
High-power optics for 3 µm range
Coating performance
R<0.2%
R>99.9%
R±0,5%
Durability per
MIL-C-48497A (abrasion and adhesion)
MIL-F-48616 (temperature, solubility&cleanability)
LIDT
4 kJ/cm² @2940 nm, 300 µs, 2 Hz, 200-on-1 (for lenses, windows and dichroics)
8 kJ/cm² @2940 nm, 300 µs, 2 Hz, 200-on-1 (for mirrors and beamsplitters)
Surface roughness
RMS <0.1 nm
Surface quality (S-D)
20-10
Steep-edge dichroics and filters
Notch filter
Blocking OD3.5 @870 nm, FWHM 40 nm
Pass-band: 900-1100 nm T>95-80%
Band-pass filter
Blocking OD3 @300-1200 nm
Band-pass T>93% @534 nm, FWHM 8 nm
Steep-edge dichroic
10 nm seperation HR@1030-1070 nm + HT@1080 AOI 10
