Chapter 1 Introduction - THORLABS DFB13TK User Manual

Low-Noise DFB Laser System
Chapter 1 Introduction
Intended Use
The DFB13TK is intended to be used in a laboratory environment. For optimal performance the DFB13TK should
be bolted down to an optical table or breadboard when in use. The DFB13TK should only be powered with the
supplied Thorlabs DS12 power supply.
The product may only be used in accordance with the instructions described in this manual. Any other use will
invalidate the warranty.
Explanation of Safety Warnings
Caution indicates a hazard with a low level of risk that, if not avoided, could result in minor
or moderate injury.
Indicates information considered important, but not hazard-related, such as possible
damage to the product.
Laser Radiation Warning
Danger, Warning, or Caution
Description
The DFB13TK turnkey laser system seamlessly incorporates a high-power, narrow-linewidth O-band distributed
feedback laser into a user-friendly benchtop housing. The integrated laser driver electronics are engineered to
minimize electrical noise, ensuring the laser output achieves exceptionally low relative intensity noise (RIN) as
well as its specified narrow linewidth. To mitigate the impact of back-reflected light, a fiber isolator is integrated
at the laser output. Power is supplied by Thorlabs's DS12 power supply (12 V, 4 A).
Out of the box, the DFB13TK is configured with pre-set operating conditions, guaranteeing a minimum output
optical power of ≥100mW. The inclusion of an enable push-button switch facilitates easy activation at a pre-set
current level. For applications requiring customized laser operating conditions, the laser set-points can be
adjusted using a command-line interface via USB connection to the instrument's back panel. This remote
operation capability also enables users to toggle the laser on and off and monitor device status indicators.
For applications requiring current or temperature modulation, the laser system features three analog modulation
inputs with SMA connectors on the front panel. These include an AC-coupled and a DC-coupled laser current
modulation port. Additionally, a laser chip temperature modulation port is included, though it is turned off by
default and can be activated via a command sent through the USB interface. Refer to Section 4.3 of this manual
for further details on these features. The modulation ports can be utilized for either modulating the laser
power/wavelength or for locking the laser wavelength to an optical frequency reference.
Rev. A, August 16, 2024
The CE/UKCA markings on the product are the
manufacturer's declaration that the product
complies with the essential requirements of
the relevant European health, safety, and
environmental protection legislation.
The symbol on the product, the accessories or
packaging indicates that this device must not
be treated as unsorted municipal waste but
must be collected separately.
Chapter 1: Introduction
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