Patent ID: 7522283

Claim:
A dual-source interferometer comprising: a. a first light source including a first optical energy with a first optical spectrum range; b. a second light source including a second optical energy with a second optical spectrum range, wherein the second optical spectrum matches the first optical spectrum; c. a beamsplitter disposed to receive the first and second optical energies, wherein the beamsplitter splits the first optical energy into a first transmitted beam and a first reflected beam, and the beamsplitter splits the second optical energy into a second transmitted beam and a second reflected beam; d. a first mirror disposed to receive the first transmitted beam and the second reflected beam, wherein the first mirror reflects the first transmitted beam and the second reflected beam to the beamsplitter; e. a second mirror disposed to receive the first reflected beam and the second transmitted beam, wherein the second mirror reflects the first reflected beam and the second transmitted beam to the beamsplitter; f. the beamsplitter combining the first transmitted beam and the first reflected beam to produce a first output beam and a second output beam, and the beamsplitter combining the second transmitted beam and the second reflected beam to produce a third output beam and a fourth output beam; g. the first output beam and the second output beam traveling to a sample; and h. an optical detector to measure vibrational circular dichroism or vibrational linear dichroism of the sample.