TY - JOUR
KW - Amplified spontaneous emission
KW - Bandpass filters
KW - Diode lasers
KW - Laser systems
KW - Tunable diode lasers
KW - Tunable lasers
AU - Jacob Pettine
AU - Miao Zhu
AU - Dana Anderson
AB - Optical bandpass filters can be utilized to suppress parasitic broadband spectral power prior to laser amplification but are typically designed around specific frequencies or require manual adjustment, thus limiting their compatibility with highly tunable or integrated laser systems. In this Letter, we introduce a self-adaptive volume holographic filter using the dynamic two-beam coupling interaction in photorefractive BaTiO3, demonstrating \textminus10dB suppression of amplified spontaneous emission noise surrounding a tunable 780 nm diode laser peak, with \<2nm filter bandwidth and 50\% power throughput. The spectral filtering is automatically centered on the lasing mode, with an estimated auto-tuning rate of 100 GHz/s under typical conditions. Furthermore, the filter suppression and bandwidth can be optimized via the two-beam coupling intensity ratio and angle, respectively, for versatile control over the self-adaptive filter characteristics.
BT - Opt. Lett.
DA - 2020-11
DO - 10.1364/OL.410695
IS - 22
M1 - 22
N2 - Optical bandpass filters can be utilized to suppress parasitic broadband spectral power prior to laser amplification but are typically designed around specific frequencies or require manual adjustment, thus limiting their compatibility with highly tunable or integrated laser systems. In this Letter, we introduce a self-adaptive volume holographic filter using the dynamic two-beam coupling interaction in photorefractive BaTiO3, demonstrating \textminus10dB suppression of amplified spontaneous emission noise surrounding a tunable 780 nm diode laser peak, with \<2nm filter bandwidth and 50\% power throughput. The spectral filtering is automatically centered on the lasing mode, with an estimated auto-tuning rate of 100 GHz/s under typical conditions. Furthermore, the filter suppression and bandwidth can be optimized via the two-beam coupling intensity ratio and angle, respectively, for versatile control over the self-adaptive filter characteristics.
PB - OSA
PY - 2020
EP - 6258
T2 - Opt. Lett.
TI - Self-adaptive amplified spontaneous emission suppression with a photorefractive two-beam coupling filter
UR - http://ol.osa.org/abstract.cfm?URI=ol-45-22-6258
VL - 45
ER -