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New from Thorlabs: High-Power Plasma Light Source, Free Space

HPLS Legs A1 780

  • Integrated and User-Replaceable Luxim® LEP™ Bulb Module with ≥10 000 Hour Lifetime
  • Typical Output Power of 9.3 W with Stability of 0.5%
  • Ø2" Free-Space Output with Internal SM2 (2.035"-40) Threading
  • 4-40 Taps Centered on Output for Compatibility with 60 mm Cage Systems
  • Variable Attenuator Continuously Tunes Optical Output Intensity from 1.5% to 100%
  • Software Control by a PC via USB
  • Open Loop, Closed Loop, and Eco Operating Mode Options

This new Thorlabs High Power Plasma Light Source has a free-space output and can be controlled via front panel controls, a host PC, or by sending voltage signals to connectors on the back panel. Controls include the ability to continuously adjust the intensity of the emitted light via the attenuation knob on the front panel. When a PC is used to control these light sources, the operator has access to commands and controls not accessible otherwise, including the ability to change the operation mode.

Each of the three operation modes is optimized for different application requirements. Open Loop mode, which is the default, drives the bulb module with current that is near the maximum specified current limit. This gives the user access to the maximum available optical output power, but does not attempt to stabilize the optical output power. Closed Loop mode uses a feedback loop to stabilize the optical output power at 80% of the maximum power achievable in Open Loop mode. Stabilization is performed by adjusting the current level driving the bulb module. Eco mode uses the Closed Loop feedback technique, but it stabilizes the optical output power at 50% of the power achievable in Open Loop mode. As Eco mode drives the bulb module at lower currents, the bulb is subjected to less heat stress; operation in this mode is expected to lengthen the lifetime of the bulb module beyond the typical 10 000 hours lifetime. 

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