A gas discharge lamp, photoionization sensor employing the gas discharge lamp, and method of manufacture. The lamp (10) includes a housing (20) containing a working gas sealed within the housing, an ultra-violet transparent window (30) through a first longitudinal end of the housing, and a longitudinally extending strip of getter (40) within the housing.
The method of manufacture includes the steps of (i) obtaining a glass tube, (ii) constricting the tube intermediate the longitudinal ends to divide the bore into first and second chambers in fluid communication with one another through a passageway in the constriction, (iii) attaching an ultraviolet transparent window over the open end of the first chamber, (iv) inserting a strip of getter into the first chamber through the passageway in the constriction, (v) purging the first chamber with a noble gas, and (vi) heating the tube at the constriction to detach the first chamber from the second chamber and seal the constricted end of the first chamber.