Table 1 Device specifications.

Beam dimensions (-3dB)

D_┴

D_\\

3.12 mm

1.7 mm

Average output power

1–20 mW

Average output power density

24–480 mW/cm²

Maximum irradiation per stimulation session

2 Joule

Collimating lens coupling efficiency (685 nm, f = 4.6 mm, NA = 0.53)

96 %

Polarizer transmittance (685 nm, optic axis parallel to the diode junction)

75 %

Quarter-wave retarder transmittance, (685 nm)

93 %

Total optical system transmittance (685 nm)

67 %

Output polarization

linear/circular

Laser class

IIIb

Pulse modulation

0–10 000 Hz

Duty factor

10–90 %

Pulse sequence duration

1–30 sec

Pulse sequence repetition period

1–5 min

Number of pulse sequences

1–20

Maximum power consumption (5 V)

600 mW