| Author(s): |
Florian B. Adler; Scott A. Diddams; |
| Title: |
High-power, hybrid Er:fiber/Tm:fiber frequency comb source in the 2 υm wavelength region |
| Published: |
May 01, 2012 |
| Abstract: |
We present a 2-υm frequency comb based on a reliable mode-locked Er:fiber laser with 100 MHz repetition rate. After shifting the spectrum of the amplified Er:fiber comb to longer wavelengths, a single-clad Tm/Ho:fiber is used as a self-pumped pre-amplifier to generate a coherent and broadband spectrum centered at 1.93 υm. Subsequently, a cladding-pumped Tm:fiber amplifier boosts the system to a maximum output power of 4.8 W at 1.96 υm. After compression in a compact grating compressor, our Er:fiber/Tm:fiber hybrid system delivers as much as 2.9 W with a pulse duration of 141 fs. The system’s comb properties are examined via heterodyne measurement. |
| Citation: |
Optics Letters |
| Volume: |
37 |
| Issue: |
9 |
| Pages: |
pp. 1400 - 1402 |
| Keywords: |
fiber amplifiers;fiber lasers;frequency combs;frequency noise;infrared lasers;nonlinear optics;supercontinuum generation;Thulium-doped lasers;ultrashort pulses |
| Research Areas: |
Physics |
