Table 1.

Average fitting constants for the double-exponential bleaching curves (error bars are shown in Figure 6).

Power density (W cm−2)	A1	τ1 (s)	A2	τ2 (s)	R2
62	2 × 106	0.68	1.1 × 106	1.2	0.97
38	3 × 106	0.69	1.7 × 106	1.7	0.98
23	9 × 105	1.4	5 × 105	6.3	0.98
10	7 × 105	3.7	2 × 105	17	0.99
1.9	4 × 104	8.6	5 × 104	51	0.99