Fully self-referenced frequency comb consuming 5 watts of electrical power

• DOI: 10.1364/osac.1.000274
• Publication Date: 2018-09-12T17:40:06Z
• Authors: Paritosh Manurkar; Edgar F. Perez; Daniel D. Hickstein; David R. Carlson; Jeff Chiles; Daron A. Westly; Esther Baumann; Scott A. Diddams; Nathan R. Newbury; Kartik Srinivasan; Scott B. Papp; Ian Coddington
• Keywords: Supercontinuum; Erbium; Waveguide

We present a hybrid fiber/waveguide design for 100-MHz frequency comb that is fully self-referenced and temperature controlled with less than 5 W of electrical power. Self-referencing achieved by supercontinuum generation in silicon nitride waveguide, which requires much lower pulse energies (~200 pJ) highly nonlinear fiber. These low-energy pulses are an erbium fiber oscillator/amplifier pumped two 250-mW passively-cooled pump diodes consume The tuning the oscillator, necessary to stabilize repetition rate presence environmental changes, resistive heating section gold-palladium-coated within laser cavity. By only small thermal mass fiber, tuned over 4.2 kHz (corresponding effective change {\deg}C) fast time constant 0.5 s, at low power consumption 0.077 W/{\deg}C, compared 2.5 W/{\deg}C conventional 200-MHz design.