| 摘要 |
This disclosure relates to hollow fibre waveguide spectroscopic gas cells built using connectors and the method for making them. The connectors are used to construct gas cell end pieces which allow gas and light to enter the hollow fibre waveguide simultaneously thus creating a gas cell. The connectors comprise a window which intersects or is in close proximity to a junction of bores within the connector, the bores transmitting gas through the connector to or from the hollow fibre waveguide. Connectors may also be used to connect two sections of fibre together in order to produce longer gas cells which enhance the signal-to-noise ratio of spectroscopic measurements. The window, which is at least partially transparent at the wavelength of the light used for spectroscopic purposes, is affixed so as to maintain a gas tight seal for the gas cell. These gas cells provide a combination of long path length and low volume and are well suited to mid-infrared spectroscopic applications which require a fast response time or low flow rate. |
