TY - UNPB
T1 - Long-term absolute frequency stabilization of a hybrid-integrated InP-Si3N4 diode laser
AU - van Rees, Albert
AU - Winkler, Lisa V.
AU - Brochard, Pierre
AU - Geskus, Dimitri
AU - van der Slot, Peter J.M.
AU - Nölleke, Christian
AU - Boller, Klaus-J.
PY - 2023/2/24
Y1 - 2023/2/24
N2 - Hybrid integrated diode lasers based on combining semiconductor optical amplifiers with lowloss Si3N4-based feedback circuits enable great laser performance for advanced photonic circuits. In
particular, using high-Q Si3N4 ring resonators for frequency-selective feedback provides wide spectral
coverage, mode-hop free tuning, and high frequency stability on short timescales, showing as ultranarrow intrinsic linewidths. However, many applications also require long-term stability, which can
be provided by locking the laser frequency to a suitable reference. We present the stabilization of
a hybrid-integrated laser, which is widely tunable around the central wavelength of 1550 nm, to a
fiber-based optical frequency discriminator (OFD) and to an acetylene absorption line. By locking
the laser to the OFD, the laser’s fractional frequency stability is improved down to 1.5·10−12 over
an averaging time of 0.5 ms. For absolute stability over longer times of several days, we successfully
lock the laser frequency to an acetylene absorption line. This limits the frequency deviations of the
laser to a range of less than 12 MHz over 5 days.
AB - Hybrid integrated diode lasers based on combining semiconductor optical amplifiers with lowloss Si3N4-based feedback circuits enable great laser performance for advanced photonic circuits. In
particular, using high-Q Si3N4 ring resonators for frequency-selective feedback provides wide spectral
coverage, mode-hop free tuning, and high frequency stability on short timescales, showing as ultranarrow intrinsic linewidths. However, many applications also require long-term stability, which can
be provided by locking the laser frequency to a suitable reference. We present the stabilization of
a hybrid-integrated laser, which is widely tunable around the central wavelength of 1550 nm, to a
fiber-based optical frequency discriminator (OFD) and to an acetylene absorption line. By locking
the laser to the OFD, the laser’s fractional frequency stability is improved down to 1.5·10−12 over
an averaging time of 0.5 ms. For absolute stability over longer times of several days, we successfully
lock the laser frequency to an acetylene absorption line. This limits the frequency deviations of the
laser to a range of less than 12 MHz over 5 days.
U2 - 10.48550/arXiv.2302.12708
DO - 10.48550/arXiv.2302.12708
M3 - Preprint
BT - Long-term absolute frequency stabilization of a hybrid-integrated InP-Si3N4 diode laser
PB - ArXiv.org
ER -