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8 March 2023 900 nm swept source FDML laser with kW peak power
Philipp Lamminger, Hubertus Hakert, Simon Lotz, Jan Philip Kolb, Tonio Kutscher, Sebastian Karpf, Robert Huber
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Proceedings Volume 12400, Fiber Lasers XX: Technology and Systems; 124001I (2023) https://doi.org/10.1117/12.2649663
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
A wavelength agile 900 nm 2.5 kW peak power fiber laser is created by four-wave mixing (FWM) in a photonic crystal fiber (PCF), while amplifying a 1300 nm Fourier-domain mode-locked (FDML) laser. The FWM process is pumped by a home-built 1064 nm master oscillator power amplifier (MOPA) laser and seeded by a home-built 1300 nm FDML laser, generating high power pulses at wavelengths, where amplification by active fiber media is difficult. The 900 nm pulses have a spectral linewidth of 70 pm, are tunable over 54 nm and have electronic pulse-to-pulse tuning capability. These pulses can be used for nonlinear imaging like two-photon or coherent anti-Stokes Raman microscopy (CARS) microscopy including spectro-temporal laser imaging by diffracted excitation (SLIDE) and time-encoded (Tico) stimulated Raman microscopy.
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Philipp Lamminger, Hubertus Hakert, Simon Lotz, Jan Philip Kolb, Tonio Kutscher, Sebastian Karpf, and Robert Huber "900 nm swept source FDML laser with kW peak power", Proc. SPIE 12400, Fiber Lasers XX: Technology and Systems, 124001I (8 March 2023); https://doi.org/10.1117/12.2649663
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KEYWORDS
Fiber lasers
Microscopy
Raman spectroscopy
Photonic crystal fibers
Tunable filters
Four wave mixing
Wavelength tuning
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