HPHC Herriott Multi-pass Gas Absorption Cell

       HealthyPhoton’s Herriott Multi-pass Gas Absorption Cell is suitable for the laser spectroscopic analysis of various gas molecular samples. The unique mirror design allows the laser beam to form multiple reflections in the absorption cell, allowing the effective optical path to reach tens of meters in a small space, enabling efficient absorption of photons in small volume gas samples. Compared to the White cell, Herriott cell features a more stable structure, better insensitiveness to heat deformation, smaller size, simpler installation, and easier operation. The cell is suitable for various application fields, such as laboratory trace gas analysis, processes gas spectrometer, environmental pollutant monitoring etc.



  • Details

• Switching between open-path or close-path modes without the need for beam re-alignment;

• With close-path mode, the air pressure can be as low as tens of Pascals;

• The laser entrance and exit holes can be designed on the same side or both sides of the mirrors based upon customer

   requirements;

There are currently two models, HPHC-A and HPHC-B. Detailed parameters are as follows.

HPHC-A Parameters

HPHC-A Parameters

Effective pathlength

14.5m

Beam diameter

<3.5mm

Gas volume

0.84L (1 atm)

Dimension

0.35(L)×0.17(W)×0.15(H)m3

Working pressure

10Pa - 102kPa

Lens coating

oxide coated metal
(reflection rate up to 98%)

Wavelength

0.2 - 12μm

Window material

CaF2/ZnSe with AR coating

Main material

aluminum alloy and stainless steel

Gas inlet/outlet

OD φ6mm quick connector

HPHC-B Parameters

HPHC-B Parameters

Effective pathlength

3.3m

Beam diameter

<3.5mm

Gas volume

0.05L (1 atm)

Peripheral size

0.15(L)×0.08(W)×0.07(H)m3

Working pressure

10Pa - 102kPa

Lens coating

oxide coated metal
(reflection rate up to 98%)

Wavelength

0.2 - 12μm

Window material

CaF2/ZnSe with AR coating

Main material

aluminum alloy and stainless steel

Gas inlet/outlet

OD φ6mm quick connector


Note: HealthyPhoton has optical design capabilities and can customize industrial or laboratory Herriott gas cells according to customer needs. Effective optical path ranges can be customized from several meters to tens of meters.

Optionl Parts
• Integrated fiber collimation and alignment module;
 Integrated photodetector;
• Cell pressure monitor;
• Cell temperature monitor;
• Cell window material upgrade (quartz, sapphire, BaF2, etc.);
• Customized high-temperature cell (with insulation sleeves, heating bands, thermostats, thermal sensors).
Docs
  • Model:HPHC-A, HPHC-B Herriott Multi-pass Gas Absorption Cell

    HPHC-A/HPHC-B Herriott Herriott Multi-pass Gas Absorption Cell
Applications

Contact us for more infomation!

Tel:156-1892-2826

E-mail:info@healthyphoton.com

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