Frequency Comb

• Laser diode current: 9.0
• AC: 950, DC: 850 (in Fiber laser software)
• Powers:
  • after fiber laser: ~ 200 mW @ 1560 nm
  • after SHG:
    • ~ 3 W @ 780 nm
    • ~ 95 mW @ 1550 nm
  • direct after filter:
    • ~ 32 mW @ 780 nm
  • direct infront PCF:
    • ~ 300 mW @ 780 nm without filter
    • ~ 20 mW @ 780 nm with filter
    • ~ 8 mW @ 1550 nm without filter
  • after PCF:
    • ~ 8.5 mW @ 780 nm without filter (red light should be visible)
    • ~ 1.8 mW @ 780 nm with filter
    • ~ 250 µW @ 1550 nm without filter
• Clock Laser / DUT ~ 5 mW; FWHM « 100 MHz
• (right picture is an old measurement and we don´t know where in the comb)
• CEO frequency has a linewidth of ~500kHz
  • yellow = good lock
  • white = bad lock, because the platform and width

• Comb has to be optimized almost every day: Most of the times just tuning potis @ SHG & PCF is enough

• Low power in general: Maybe pump diodes should be exchanged (15.09.2016: 145 mW Output @ 9.5)
• Fiberlaser software does not start: Maybe wrong COM Port: Change @ Windows Device Manager
• FiberLaser software starts, but Fiber Comb does not: Maybe NI card not attached properly
• You can´t lock CEO and Reprate, than restart the hole lasersysteme [probable all ~1-2 months].

• Turn off the frequency comb:
  1. Push Amplifier button (LED off)
  2. Push Laser button (LED off)
  3. turning the upper key (position 0)
  4. turning the lower key (position 0)
• Turn on:
  1. exactly the other way arround

Data under ResLab: D:\Dokumente\Daten\Frequenzkamm\Spektren 161115 1064 nm Port.

• measured with optical spectrumanalysizer from AG-Morgner
• Resolution: for peak 0.2nm and full range measurement 1.5nm
• pdf-files: frequency_comb_spectrum_rf-fiber-output.pdffrequency_comb_spectrum_rf-fiber-output_full_range_.pdf

• Software for FiberLaser
• Software for Fiber Comb Control