THORLABS SLSLLG2, Руководство пользователя

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Liquid Light Guide Adapter with Shutter Chapter 3: Description
Rev A, September 8,, 2016 Page 3
Chapter 3 Description
The SLSLLG2 Liquid Light Guide (LLG) Adapter with Shutter is designed to
integrate with Thorlabs’ SLS301, SLS401, and SLS402 Light Sources. The LLG
adapter couples the output of these light sources into Ø3 mm or Ø5 mm core liquid
light guides. The adapter includes an integrated shutter, , focusing lens, a Ø3 mm
LLG to SM1 Adapter, and a Ø5 mm LLG to SM1 Adapter. An external controller,
switching power supply, AC cord, and manual are included with the LLG adapter.
The shutter connects to the controller through a shielded four-conductor cable
using a four-pin, mini-DIN connector. An included controller provides the drive
levels required for optimal performance and monitors the state of the shutter. It
features a BNC connector for external modulation and an interlock output jack for
safety. A power supply (input AC 100-240V, output DC 5V) is included.
The SLSLLG2 can also be directly controlled using either the buttons on the
controller or via an external modulation source. Two buttons are on top of the
controller unit, one turns the power on and off while the button labeled ENABLE
opens or close the shutter. Manually depressing the ENABLE button will open and
close the shutter. To use the modulation input, press and hold the ENABLE button
for 3 seconds. The SLSLLG2 will power on in the last used mode, either Manual
or External Modulation Mode.
The external modulation port can drive the shutter up to a maximum frequency of
15 Hz. In normal operation, when the voltage of the external modulation pulse is
high, the shutter will open. When the voltage is low, the shutter will be closed. In
normal operation, the shutter will shut down if it is operated at the maximum
frequency for long periods of time in order to prevent overheating. In Unprotected
Mode, this safety feature is disabled and the unit may be damaged if operated for
long periods of time without thermal control.
Along with overheating protection, the SLSLLG2 is equipped with laser and blade
jam safety features. The controller detects the state of the shutter using an internal
optical sensor inside the shutter package. An optical sensor detects the position of
the shutter blade, confirming if the shutter is open or closed. This feature, when
used with the interlock connector, is ideal for applications where a laser safety
lockout is required. In the event of a failure such as a blade jam, the SLSLLG2
shutter will shut down and the state of the interlock will be indicated by a red LED
light. The SLSLLG2 shutter can detect when the blades are not operating at the
set frequency and will shut down to prevent damage to the shutter.