THORLABS S4FC940 High-Power Fiber-Coupled Laser Sources (940 ± 10 nm)

Wavelength: 940 ± 10 nm

Internal Fiber: SM800-5.6-125

Laser Class: 3B

Maximum Output Power(b):

- Min: 28 mW

- Typical: 30 mW

Laser Power Stability(c):

- 15 min: ≤0.022 dB (≤0.5%)

- 24 hr: ≤0.087 dB (≤2.0%)

(b) Specified at Temperature Set Point of 25 °C

(c) At 75% of maximum output power. The stability spec was obtained after a 1 hour warm-up period.

(d) This laser source may experience mode-hopping that cannot be tuned out with temperature or current adjustment. Therefore, power stability should be interpreted as the maximum power drift over that period.

Common Specifications:

Driver

Display Accuracy: ±5% of Actual

S4FC Series Laser Adjustment Range

- Default: Laser Threshold to Max

- Option: 0 mA Current to Max

S6FC2000 Laser Adjustment Range

- Default: Laser Threshold to Max or Min

- Option: 0 mA Current to Max or Jumps to Min

Laser Adjustment Resolution(a): S4FC Series: 0.01 mW. S6FC2000: 0.1 mA

Temperature Adjustment Range: 20°C to 30°C

Temperature Setpoint Resolution: 0.01°C

Modulation Input(b): 0 to 5 V (0 to Full Power)

Modulation Input Impedance: 1 kΩ

Modulation Input Connector(c): BNC

Modulation Bandwidth(d): ≤100 kHz, Sine Wave

General

Output Fiber Connector: FC/PC or FC/APCe, 2.2 mm Wide-Key Slot

Operating Temperature: 15 to 35 °C

Storage Temperature: 0 to 50 °C

Input Power: 85 - 264 VAC; 50 - 60 Hz

USB Connector(c): Type B

(a) While Laser is Enabled

(b) Modulation Input voltage directly corresponds to output power, where 5 V = Max Power and 0 V = 0 mW when the front panel knob is set to 0 mW. The maximum voltage will be less than 5 V when using the default laser adjustment range (Laser Threshold to Max).

(c) The maximum USB and BNC cable length is 3 meters in order to avoid a susceptibility to RF interference according to IEC61000-4-3.

(d) Waveforms other than sine waves contain components with higher frequency than the overall frequency of the waveform, which may not be followed.

(e) Only the S6FC2000 is offered with an FC/APC connector.

MANUAL: