Table 2. Parameters of laser pulse trains employed for psychophysical tests. Definitions: GBS – grating-based pulse stretcher; FBS – fiber-based pulse stretcher; $\tau$ – pulse duration at full width at half maximum; PRF – pulse repetition frequency; δ – duty cycle; λ_c – central wavelength, the fiber length is indicated; Δλ – spectral full width at half maximum; D – beam diameter (1/e²) at the pupil plane (for elliptical beams, both axis sizes are provided); N – number of tested subjects.

Laser source	Modification	$\tau$ [ps]	PRF [MHz]	δ	λc [nm]	Δλ [nm]	D [mm]	N
tunable fs laser	––––	0.197	51.5	1.01 × 10–5	1042.1	9.9	2.1 × 1.4	4
fs laser	––––	0.253	62.65	1.58 × 10–5	1043.3	4.8	1.5	15
fs laser	GBS	2	62.65	1.25 × 10–4	1043.3	5.3	1.2 × 1.6	8
ps laser	––––	12.2	19.17	2.34 × 10–4	1028.4	12.5	2.1	15
fs laser	FBS (100 m)	44.9	62.65	2.81 × 10–3	1043.3	10.3	1.85	4
ps laser	FBS (1 km)	92.4	19.17	1.77 × 10–3	1029.3	7.5	2.0	4
fs laser	FBS (100 m)	269	62.65	1.69 × 10–2	1043.3	18.4	1.6	4
fs laser	FBS (1 km)	759	62.65	4.70 × 10–2	1043.3	6.8	1.6	3