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Clocklaser

ECDL (downstairs)

The laser consists of a MOPA in littman-configuration. The diode runs at 80 mA (7-10 mW seed-power) and the TA at typically 800 mA (output power ~ 100 mW) The laser frequency can be controlled by a piezo and jumps cyclicly with linear length change. An intra-ECDL-etalon is used to course-adjust the frequency and jump-ranges. Do not use the laser-diode current to change the frequency.

Typical power values

  • Laser diode: 7-10 mW @ 80 mA
  • TA: 100 mW @ 800 mA
  • Power infront of fiber going upstairs: 30 mW
  • Power for the double-pass AOMs: ~ 10 mW
  • Power infront of the clock-resonators: 100 µW
Werte checken

Tapered amplifier (upstairs)

Typical power values

  • Seedpower: min 10 mW
  • Outputpower: 800 mW @ 2.2 A
  • Max outpupower related to the datasheet: 1.5 W @ 3 A

The system was build by Sina Malobabic and is described in her diplomathesis.

  • EYP-TPA-0915-01500-3006-CMT03-0000

SHG

Typical power values

  • Outputower: ~ 120 mW
  • Power transfered through the fiber: 20 mW
  • Power behind the lattice mirror: ~7 - 8 mW

SHG Photodiode is saturated for full TA power.

  • SHG beamprofil has some additional spots on one side
  • SHG beam direction of the blue beam changes with the TA power → Adjust at maximal power.