Browsing by Author "Davis, Nicholas M."

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Compact methane sensor using an integrating sphere and interband cascade laser at 3313 nm

Davis, Nicholas M.; Francis, Daniel; Hodgkinson, Jane; Tatam, Ralph P. (Elsevier, 2023-04-23)

We present a sensor for gas detection utilising an integrating sphere and interband cascade laser for tunable diode laser absorption spectroscopy (TDLAS). Measurements were made of the methane absorption line at 3313 nm ...
Sensitive detection of methane at 3.3 μm using an integrating sphere and interband cascade laser

Davis, Nicholas M.; Hodgkinson, Jane; Francis, Daniel; Tatam, Ralph P. (Society of Photo-optical Instrumentation Engineers, 2016-04-29)

Detection of methane at 3.3μm using a DFB Interband Cascade Laser and gold coated integrating sphere is performed. A 10cm diameter sphere with effective path length of 54.5cm was adapted for use as a gas cell. A comparison ...
Spectroscopic gas detection using a Bragg grating - stabilized external cavity laser, custom written in planar integrated silica-on-silicon

Davis, Nicholas M.; Lynch, S. F.; Gates, J. C.; Hodgkinson, Jane; Smith, P. G. R.; Tatam, Ralph P. (Optical Society of America, 2019-09-25)

We present the development of an external cavity Bragg grating stabilized laser for tunable diode laser spectroscopy (TDLS). Our design uses a planar integrated silica-on-silicon platform incorporating a custom written ...

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