THORLABS S1FC1310PM, Руководство пользователя

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Fiber-Coupled Laser Source Chapter 5: Operation
Rev E, February 21, 2017 Page 7
5.2. Turning on the Source

Turn the POWER key switch clockwise. The unit is ON when the display lights up.

Make sure the Interlock Input is short-circuited, see page 10.

Press and release the ENABLE switch to turn ON the laser. The LASER ON indicator will light up and
after a delay of approximately 5 seconds, the source will begin to emit light.
5.3. Adjusting the Laser Output Power

Use the PWR ADJUST knob to adjust the output power to the desired level.

The power shown on the display is the optical power at the laser aperture. The actual power at the end of
your fiber optic cable may be less, depending on the quality of the connection.
Note, each unit is calibrated internally to limit the maximum operating power of the laser diode to a safe operating
range.
5.4. Turning the Laser Off

The Laser output should be turned off by pressing and releasing the ENABLE switch.

When completely powering down an enabled unit, first press and release the ENABLE switch and then
turn the POWER key switch counterclockwise, which will turn OFF the entire unit. Anytime the unit is
turned OFF and then turned back ON, the Laser will be disabled until the ENABLE switch is pressed.
5.5. Modulating the Laser Output
The MOD IN input can be used to modulate the laser output, or set the laser output remotely using a +5 V power
source. The 5 V maximum input corresponds to the maximum calibrated power of the laser source. Each unit is
calibrated to achieve the maximum power for the particular laser diode used in the device. Due to variations in the
coupling process no two units will have the same maximum power.

Connect a signal generator or +5 V power source to the unit using a BNC type connector.

Set the PWR ADJUST knob to its full counter clockwise setting.

Press the ENABLE switch to turn on the laser.

Apply the appropriate signal to the MOD IN input. Signals above approximately 5.5 V will be clamped by
internal circuits.

Adjusting the PWR ADJUST knob will allow for a DC offset on the modulated output. Adjust the input
signal accordingly to avoid clipping the output waveform, which will occur if the unit is driven to its current
or power limits.
Caution!
DO NOT apply TTL or square wave modulation to the MOD IN input.
Due to response delays of the constant power control loop, damage to the integrated fiber coupled
laser may occur!