Mach-Zender and Modified Jamin

REFERENCE

SAMPLE

FILTERS

SIGNAL

DETECTOR

SERVO

AMPLIFIER

BEAMSPLITTER

ARM A

PIEZOELECTRIC

MIRROR

DICHROIC

MIRROR

ARM B

EXCITATION

LASER

PROBE

LASER

BEAMSPLITTER

BEAM

SPLITTER

BALANCED

DETECTOR

PIEZOELECTRIC

TRANSDUCER

+

-

SIGNAL

EXCITATION

LASER

SAMPLE

PROBE

LASER

BEAM

SPLITTER

• Both predicted to measure gas absorbance to ~10-10 cm-1

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