Hollow-core Crystal Fiber

Hollow-core Crystal Fiber

A PMC is a stand-alone and modular component that consists of a HC-PCF filled with gas and fiber terminations. The presence of gas within an optical fibre on a micron scale provides a million-fold increase in the gas-laser efficiency.

STG Series Hollow-core Crystal Fibers

  • Nearly single mode guidance
  • Low dispersion, low loss
  • High power and energy handling
  • Broadband spectral coverage

1. STG-C-Green Series Hollow-core Fibers

Hollow-core fiber optimized for 500-700nm range.

Physical Properties
Core contour Hypocycloïde
Inner core Ø 63 μm ± 1
Outer fiber Ø 300 μm ± 3%
Fiber coating layer Primary polymer coating
Optical Properties
Center Wavelength 800nm / 1600 nm
Attenuation @ 532nm 30 dB/km ±10
Dispersion @ 532nm 1.5 ps/nm.km ± 0.5
Transmission Band** 200 nm
Mode field Diameter 24 μm ± 1
3dB bend loss radius 10 cm ± 2

**Attenuation lower than 100 dB/km for the 500-700nm

2. STG-C-TiSa_Er-7C

Kagome hollow core fiber with optimized performance for 800nm and 1550nm. Ideal for Ti-Sapphire and Erbium based lasers

  • Broad spectral coverage
  • Large core size
  • Nearly single mode guidance
  • Low dispersion
  • Record–high laser damage threshold
Physical Properties
Core contour Hypocycloïde with negative curvature parameter b=1*
Inner core Ø 63 μm ± 1
Outer fiber Ø 300 μm ± 3%
Fiber coating layer Primary polymer coating
Optical Properties
Center Wavelength 800 / 1600 nm
Attenuation @ 532nm <80 dB/km ±10
Dispersion @ 532nm 1 ps/nm.km ± 0.5
Transmission Band** >100nm / >300nm
Mode field Diameter 44 μm ± 1
3dB bend loss radius 5 cm ± 2

**Attenuation lower than 100 dB/km for the 1300-1750nm

3. STG-C-Yb-7C

Hollow-Core Fiber optimized for 900-1100nm range. Ideal for Yb and Nd:YAG based lasers.

Physical Properties
Core contour Hypocycloïde with negative curvature parameter b>0.7*
Inner core Ø 57 μm ± 1
Outer fiber Ø 320 μm ± 3%
Fiber coating layer Primary polymer coating
Optical Properties
Center Wavelength 1030 nm
Attenuation @ 532nm <100 dB/km
Dispersion @ 532nm 1 ps/nm.km ± 0.5
Transmission Band** 300 nm
Mode field Diameter 39 μm ± 1
3dB bend loss radius 5 cm ± 2

**Attenuation lower than 100 dB/km for the 850-1150nm

3. STG-C-Er-7C

Hollow-Core Fiber optimized for 1550nm. Ideal for Erbium lasers.

Physical Properties
Core contour Hypocycloïde with negative curvature parameter b=0.8*
Inner core Ø 61 μm ± 1
Outer fiber Ø 432 μm ± 3%
Fiber coating layer Primary polymer coating
Optical Properties
Center Wavelength 1550 nm
Attenuation @ 532nm <50 dB/km
Dispersion @ 532nm 1 ps/nm.km ± 0.5
Transmission Band** 400 nm
Mode field Diameter 42 μm ± 1
3dB bend loss radius 5 cm ± 2

**Attenuation lower than 100 dB/km for the 1375-1750nm

4. STGLO-C-2μm-7C

Hollow-Core Fiber optimized for 2-3μm range.

Physical Properties
Core contour Hypocycloïde with negative curvature parameter b>0.7*
Inner core Ø 56 μm ± 1
Outer fiber Ø 415 μm ± 3%
Fiber coating layer Primary polymer coating
Optical Properties
Center Wavelength 2000 nm
Attenuation @ 532nm 60 dB/km
Dispersion @ 532nm 1 ps/nm.km ± 0.5
Transmission Band** >350 nm
Mode field Diameter 42 μm ± 1
3dB bend loss radius 5 cm ± 2

**Attenuation lower than 100 dB/km for the 850-1150nm

STG Series Photonic Microcell

Our technology is based on Hollow-Core Photonic Crystal Fiber (HC-PCF) and the process of filling the fiber with a chosen gas to offer photonic functionalities such as (i) Optical frequency conversion, (ii) Ultra-high power pulsed laser delivery (iii) Laser pulse compression or (iv) Frequency standards.

A PMC is a stand-alone and modular component that consists of a HC-PCF filled with gas and fiber terminations. The presence of gas within an optical fibre on a micron scale provides a million-fold increase in the gas-laser efficiency compared to traditional lasing methods and opens up the unique ability for functionalization. For example, with a Raman gas one can produce new wavelengths and hence create new applications. There are different variants of HC-PCF used within the PMC family of components. The Inhibited-Coupling guiding HC-PCF such as Kagome fiber produces particularly good results with a high damage threshold and a very wide bandwidth.

The PMC comes in different forms tailored to either the applications or the laser power requirements or to specific housing requirements. Below is a list of the different PMC forms we can deliver.

1. ALL-FIBER PMC

An optical fiber made of a length of HC-PCF filled with gas and spliced to a solid optical fiber.

  • Gas type: typically any molecular gas. atomic vapor
  • Gas pressure ranges: from High vacuum pressure to several bars.
  • Splice loss: typically 1 dB/splice.
  • Ideal for low power laser applications such as telecommunications, instrumentations, frequency standards, Frequency conversion.

2. GAS-FILLABLE & TRAVEL STAGE MOUNTABLE PMC-TERMINATION

This PMC has at least one of its terminations exhibiting a gas-fillable cell. This cell is mountable on standard translation stages for quick and efficient laser coupling.

  • Gas injection
  • Rugged tube-over-fiber
  • Micro-bending elimination
  • Macro-bending restraint
  • Dust contamination prevention
  • Ideal for high power applications such as ultra-short pulse laser beam delivery, laser pulse compression, frequency converter.

hollow core fiber hollow core fiber

3. TUBULAR CELL PMC-TERMINATION

This PMC has at least one of its terminations exhibiting a tubular cell. This cell can be mounted on and/or integrated in standard opto-mechanical holders or systems.

  • Rugged tube-over-fiber
  • Micro-bending elimination
  • Macro-bending restraint
  • Dust prevention
  • Ideal for high power applications such as ultra-short pulse laser beam delivery, laser pulse compression, frequency convertor.

STG Beam Delivery System

STG-BDS is a new and user friendly module for high power laser beam delivery. It brings the outstanding fast lasers pulse energy and power handling of our fiber's technology in a ruggedized and pre-aligned module.

1. STG-BDS-Green Beam Delivery System

Physical Properties
Fiber length** 2 m , 3 m, 5 m
Output beam quality M²<1.3
Gas/Vacuum connection KF16
Fiber protection** Metallic monocoil
Min bend radius 200 mm
Optical Properties
Working wavelength** 515 nm / 532 nm
Attenuation <100 dB/km
Dispersion @ Working wavelength 1 ps/nm/km ± 0.5
Transmission band***

***Attenuation lower than 100 dB/km

>100 nm
Input beam requirement** 3 mm ± 0.1
Bend loss @ 20 cm bend radius < 1 dB
  • **Others upon request
  • All specifications could be changed without notice

2. STG-BDS-Yb & Nd:Yag

Physical Properties
Fiber length** 2 m , 3 m, 5 m
Output beam quality M²<1.3
Gas/Vacuum connection KF16
Fiber protection** Metallic monocoil
Min bend radius 200 mm
Optical Properties
Working wavelength** 1030 nm / 1064 nm
Attenuation <50 dB/km
Dispersion @ Working wavelength 1 ps/nm/km ± 0.5
Transmission band***
***Attenuation lower than 100 dB/km
>200 nm
Input beam requirement** 2.9 mm ± 0.1
Bend loss @ 20 cm bend radius < 1 dB
  • **Others upon request
  • All specifications could be changed without notice

3. STG CombLas

  • Photonic Micro-Cell based Raman wavelength convertor
  • Ruggedized packaging
  • Long life-time
  • Ultra-low pump threshold
  • Compatible with most pulsed lasers
  • Battery powered
  • UV-VIS spectral coverage (over 20 lines)
  • Single mode
  • Ideal for bio-photonic applications

More than 20 lasers in 1

Optical Properties*
Pump wavelength 532 nm
Spectral coverage 350-800 nm
Line spacing 17.6 Thz
Average output power 9 mW