Generation and Amplification of 350 fs, 2 μm pulses in Tm:fiber
Identifieur interne : 000228 ( Pascal/Checkpoint ); précédent : 000227; suivant : 000229Generation and Amplification of 350 fs, 2 μm pulses in Tm:fiber
Auteurs : R. Andrew Sims [États-Unis] ; Pankaj Kadwani [États-Unis] ; Lawrence Shah [États-Unis] ; Martin Richardson [États-Unis]Source :
- Proceedings of SPIE, the International Society for Optical Engineering [ 0277-786X ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Impulsion ultracourte, Traitement matériau, Blocage mode laser, Soliton optique, Compensation dispersion optique, Laser pulsé, Laser fibre, Optique non linéaire, Domaine temps fs, Sécurité oculaire, Fibre optique, Nanotube monofeuillet, Nanotube carbone, Matériau dopé, Silice, Addition thulium, Absorbant saturable, Largeur bande spectrale, 0130C, 4265R, 4260F, 4265T, 4255W.
English descriptors
- KwdEn :
- Carbon nanotubes, Doped materials, Eye safety, Fiber lasers, Laser mode locking, Material processing, Nonlinear optics, Optical dispersion compensation, Optical fibers, Optical solitons, Pulsed lasers, Saturable absorbers, Silica, Singlewalled nanotube, Spectral bandwidth, Thulium additions, Ultrashort pulse, fs range.
Abstract
Amplified ultrashort pulses at 2 μm are of great interest for atmospheric sensing, medical, and materials processing applications. We describe the generation and amplification of femtosecond 2 μm pulses in thulium doped silica fiber. Mode-locked eye-safe laser pulses at ∼2 μm were generated in a Tm:fiber oscillator using a single-walled carbon nanotube saturable absorber. Stable mode-locking was achieved at a repetition rate of 70 MHz with soliton pulses reaching energies of ∼40 pJ with a spectral bandwidth of ∼8 nm. Autocorrelation measurements indicated bandwidth limited pulses of ∼500 fs duration. This oscillator was used to seed a Tm:fiber amplifier in both free space and fiber coupled configurations. Effects of dispersion compensation and pulse amplification are reported.
Affiliations:
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Pascal:11-0365459Le document en format XML
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<front><div type="abstract" xml:lang="en">Amplified ultrashort pulses at 2 μm are of great interest for atmospheric sensing, medical, and materials processing applications. We describe the generation and amplification of femtosecond 2 μm pulses in thulium doped silica fiber. Mode-locked eye-safe laser pulses at ∼2 μm were generated in a Tm:fiber oscillator using a single-walled carbon nanotube saturable absorber. Stable mode-locking was achieved at a repetition rate of 70 MHz with soliton pulses reaching energies of ∼40 pJ with a spectral bandwidth of ∼8 nm. Autocorrelation measurements indicated bandwidth limited pulses of ∼500 fs duration. This oscillator was used to seed a Tm:fiber amplifier in both free space and fiber coupled configurations. Effects of dispersion compensation and pulse amplification are reported.</div>
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