Table 1.

Phase Cycling Scheme for Isolating the 2D IR Signal^a

	ϕ1	ϕ2	ϕ3	ϕLO
S1	0	0	0	0
S2	π	0	0	0
S3	0	π	0	0
S4	π	π	0	0
S5	0	0	π	0
S6	π	0	π	0
S7	0	π	π	0
S8	π	π	π	0

^aS_n are the signals for each of the individual pulse sequences that are linearly combined, each using the indicated phases for each laser pulse ϕ_n.