SEARCH Articles Figures Tables Applied fields change the optical pathlength Phase modulators Cell pathlength Diffusional pathlength Equivalent pathlength Long optical pathlength Long pathlength optical cell ( Optical pathlength Optimum pathlength Pathlength Pathlength calibration Pathlength difference correction Pathlength normalization Pathlength selection Pathlength variations Pathlength-concentration product Sample pathlength Total pathlength Variable pathlength cells Zero pathlength difference