High-power Fibers for Diode Lasers

High Power (HP-) Silica Cables are assembled with innovative HP-SMA-connectors made with inner Copper ferrules for free fiber end position and capable for durable delivery of laser power of high intensity in pulsed or cw mode in the range below 1kW (cw).

Super High Power (SHP-) Silica Cables could deliver up to several kW from Diode and Solid State lasers resulting from their assembly with a larger size SHP-connectors of special design with diameter spans 2.5, 4, 10 and 15mm - or with Mitsubishi connectors of D-80 and D-200 types. Bespoken SHP-connector design may include Copper ferrule protection by Sapphire rings to prevent Copper evaporation by intensive laser beam.

HP- and SHP-cables can be protected by polymer coated metal armor or MKS-jacketing (Stainless Steel / Kevlar / Silicon) for durable protection of silica fibers inside – which diameter spans from 100μm to 2mm. In-house technology of precise assembly allows to assembled single HP & SHP-cables with a length from 50mm to 100m.

All silica fiber NA = 0,22, default length 1m, protected in stainless steel (inside) and fabric silicone (outside) tubing (out diameter 6mm, grey), terminated with 2x SMA905 free end connectors, electrically disconnected

Fiber length: other lengths available upon request.

Remark: Other specifications are available upon request.

Order Information:

ST-SMA905-Fxxx-yyyy: xxx is core diameter in um and yyyy is fiber length in mm.

1) HP- & SHP-cables based on UV- & NIR-Silica glass for flexible power delivery of Diode, Solid State, DPSS and Gas lasers – which durable exploitation is secured by low optical losses in fiber of special structure, by innovative design of HP- & SHP-connectors, by proper fiber protection with armored MKS-jackets and by inhouse test of all cables performance;

2) HP- & SHP-cables based on special Silica fiber coated by Aluminium, Copper or Copper alloys – where unique technology of metal freezing on lateral fiber surface doubles fiber bending strength, accelerates dissipation of laser induced heat from the fiber under delivery of high power and enables cables applications at high temperatures up to 600°C;

3) HP-Silica Fiber Summarizers for fiber collection of power from 3 to 7 Diode Laser Modules - provides above 100W of combined laser power at the input of HP-Refocusator of special design and then this refocused power is homogenized by HP-fiber Homogenizer. This 3 component HP-Silica Fiber System provides flexible solution for multiwavelength laser combination and for medical applications like hair epilation in cosmetology;

4) HP-Silica Fiber Dental Applicators (SFDA) – for disposable applications in advanced laser dentistry and ENT laser surgery. Variety of HP-Silica cables for medical lasers includes the design where fibers are assembled with electric wires in the same protective jacket – as it is required for remote control and variation of laser parameters during laser surgery. Distal fiber ends may be terminated with a variety of hand-pieces of bespoke design.

Chalcogenide Infra Red (CIR) glasses are the best As₂S₃-based material for fiber optics in the range of 1.5-6μm. CIR fibers transmit IR-radiation in the gap between silica fibers (0.2-2.4μm) and Polycrystalline Infra Red (PIR) fibers (4-18μm). CIR fiber is drawn in core/clad structure with double polymer coating and characterized by a low optical losses and high flexibility.

The innovative glass purification process provides the attenuation spectra free from OH absorption band at 3μm and thus it enables CIR fiber to be used for Er:YAG laser power delivery.

Features

• high transmittance from 1.5μm up to 6μm

• suitable for Er:YAG - laser power delivery

• optical losses 0.2 dB/m at 2-4μm

• double polymer coating for high flexibility

• durable cables with SMA-connectors

Applications

• Flexible delivery for Er:YAG - laser

• flexible IR-imaging systems

• remote non-contact pyrometry in the 200-600K range

• fiber probes for remote process IR - spectroscopy

Fiber specification

CIR Infrared Optical Fiber Standard Cables

Chalcogenide Infra Red (CIR) (1.5 - 6μm) fiber is drawn in core/clad structure with double polymer coating and characterized by a low optical losses and high flexibility. Delivery is from stock or within few weeks ARO. All standard cables include PEEK-polymer protective jacket and SMA termination.

The development of specialty fibers for the Mid-Infrared region has resulted in a unique product - Core/Clad Polycrystalline Infra-Red (PIR-) fibers. The PIR-fibers are non-toxic, very flexible, transparent across a broad spectral region 4 -18μm and capable of operating over the wide temperature range of 4K up to 420K. They are manufactured in a core/clad structure of superior quality from pure AgCl: AgBr solid solution crystals using an innovative vacuum extrusion method. They possess by no aging effect compared to an alternative bare core fiber. The range of PIR-fiber cables are available with a durable PEEK polymer jacket and terminations using either an SMA - type connector with a Ti or polymer ferrule or special one, manufactured on customer request. A wide variety of different optical coupling units can also be designed & fabricated for specialized customer requirements.

Fiber Features:

• high transmittance from 4μm up to 18μm

• high flexibility and no toxicity

• suitable for CO2 - laser power delivery up to 50W

• low Attenuation at 10.6мm (0.1-0.5 dB/m)

• fiber diameters from 0.3 to 1.0mm

• fiber lengths up to 20m (for 0.5mm diameter)

• no aging effect

Standard Fiber Specification:

PIR-fibers are protected by a loose PEEK-jacket (PolyEtherEtherKetone) to provide stiff, flexible and hermetic protection against mechanical, photoinduced and chemical damage over a wide temperature range up to 250°C.

Standard Cable termination with a special Ti-ferrule SMA-connector:

• for low power (spectroscopy & radiometry) applications;

• for high laser power delivery - free standing fiber end ;

• standard cable length - 1m & 2m.

PIR-fiber end-surface treatment:

• Cutting low cost, high performance - standard;

• Polishing for special application, including AR-coating - on request;

• SMART for reduced reflection of high CO2-laser intensity - on request.

Options

• accessory kits for remote spectroscopy with FTIR, QCL and TDL-spectrometers;

• pig-tailing of IR-detectors: TE- & LN-cooled MCT, PbSe, thermopiles, etc.

Diverse Methods of AR-coating and SMART-treatment

Comparison of Standard and Spectral PIR-fibers

Applications

• Flexible delivery system for CO and CO2 laser;

• Flexible IR-imaging systems;

• Remote non-contact pyrometry in the 100-600K range;

• Fiber probes for remote in-line, in-vivo and process IR - spectroscopy.

Typical transmission spectra of 1.5m long PIR-900/1000 fiber (red) versus CIR-750/850 fiber (blue) (includes reflection & coupling losses at fiber ends without AR coating and some absorption bands of atmospheric moisture, etc.)

Typical specification of CIR- and PIR-fibers

Comparison of PIR- and CIR-Fibers Transmission Spectra for 1.5m length

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