What the study found
Lead phthalocyanine (PbPc) was used as a saturable absorber in an erbium-doped fiber laser to produce stable mode-locked pulses, which were then amplified and used to generate near-infrared supercontinuum light. The laser produced ultrashort pulses centered at 1530.5 nm with a duration of 910 fs.
Why the authors say this matters
The authors conclude that PbPc provides an alternative organic saturable absorber platform for generating stable femtosecond pulses and broadband near-infrared supercontinuum.
What the researchers tested
The researchers fabricated a PbPc-based saturable absorber film by placing PbPc in a polymer host matrix. They inserted this film into an erbium-doped fiber laser cavity to achieve mode-locked operation, then amplified the pulses and injected them into a highly nonlinear photonic crystal fiber with near-zero dispersion at 1550 nm.
What worked and what didn't
Stable mode-locking was achieved over a pump power range of 141.38–210.62 mW. At 210.6 mW, the laser had a repetition rate of 1.821 MHz and a peak power of 5.20 kW, and the amplified pulses enabled supercontinuum generation with a spectral range from 1300 nm to beyond 2100 nm at 25.12 mW input power.
What to keep in mind
The abstract does not describe limitations, comparisons with other saturable absorbers, or long-term performance beyond the reported operating range.
Key points
- PbPc was used as a saturable absorber in an erbium-doped fiber laser.
- The laser produced stable mode-locked pulses centered at 1530.5 nm with a duration of 910 fs.
- Stable operation was reported across a pump power range of 141.38–210.62 mW.
- At 210.6 mW, the laser reached 1.821 MHz repetition rate and 5.20 kW peak power.
- Amplified pulses generated near-infrared supercontinuum spanning 1300 nm to beyond 2100 nm.
Disclosure
- Research title:
- PbPc fiber laser produced stable femtosecond pulses and near-infrared supercontinuum
- Authors:
- Fauziah Che Mat, Aeriyn D. Ahmad, Masruroh, Irfan Anjum Badruddin, Sarfaraz Kamangar, Hamzah Arof Hamzah Arof, Sulaiman W. Harun
- Institutions:
- University of Malaya, University of Brawijaya, King Khalid University
- Publication date:
- 2026-04-03
- OpenAlex record:
- View
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