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Publikationen von
Sarper Salman

Alle Publikationen des HI Jena

2022

C. Mahnke, Y. Hua, Y. Ma, S. Salman, T. Lamb, S. Schulz, C. Heyl, H. Cankaya, and I. Hartl
Long-term stable, synchronizable, low-noise picosecond Ho:fiber NALM oscillator for Ho:YLF amplifier seeding
Optics letters 47, 822 (2022)

Abstract: We demonstrate a 41.6 MHz, 1.3 ps, 140 pJ Ho:fiber oscillator using a nonlinear amplifying loop mirror (NALM) as saturable absorber. The oscillator is constructed entirely with polarization-maintaining (PM) fibers, is tunable with a center wavelength between 2035 nm and 2075 nm, and can be synchronized to an external RF reference. For our application of Ho:YLF amplifier seeding for dielectric electron acceleration, the laser is tuned to 2050 nm and synchronized to a stable RF reference with 45 fs rms timing jitter in the integration interval [10 Hz, 1 MHz]. We show long term synchronized operation and characterize the relative intensity noise (RIN) and timing jitter of the oscillator for two different Tm-fiber pump lasers.

2021

Y. Ma, S. Salman, C. Li, C. Mahnke, Y. Hua, S. Droste, J. Fellinger, A. Mayer, O. Heckl, C. Heyl, and I. Hartl
Compact, All-PM Fiber Integrated and Alignment-Free Ultrafast Yb:Fiber NALM Laser With Sub-Femtosecond Timing Jitter
Journal of Lightwave Technology 39, 4431 (2021)
Kein Abstract vorhandenLinkBibTeX
S. Salman, Y. Ma, K. Gürel, S. Schilt, C. Li, P. Pfäfflein, C. Mahnke, J. Fellinger, S. Droste, A. Mayer, O. Heckl, T. Südmeyer, C. Heyl, and I. Hartl
Comparison of two low-noise CEO frequency stabilization methods for an all-PM Yb:fiber NALM oscillator
OSA Continuum 4, 1889 (2021)
Kein Abstract vorhandenLinkBibTeX
Y. Ma, S. Salman, C. Li, C. Mahnke, Y. Hua, J. Fellinger, A. S. Mayer, O. H. Heckl, C. Heyl, and I. Hartl
Sub-fs timing jitter of an 88 fs all-PM fiber integrated ultrafast Yb NALM oscillator
(2021)

Abstract: We demonstrate an all-PM fiber integrated femtosecond Yb NALM oscillator with 88 fs compressed pulse duration and sub-fs free-running timing jitter [25 kHz to 5 MHz].

C. Mahnke, Y. Hua, Y. Ma, S. Salman, T. Lamb, S. Schulz, C. M. Heyl, H. Cankaya, and I. Hartl
Synchronizable, low-jitter, picosecond Ho:fiber NALM oscillator for Ho:YLF amplifier driven electron acceleration
(2021)

Abstract: We demonstrate a 41.6 MHz, 1.3 ps, 140 pJ Ho:fiber oscillator centered at 2050 nm for seeding Ho:YLF amplifiers. RIN and timing jitter of the oscillator are characterized while comparing two commercial Tm pump lasers.

2020

A. Mayer, W. Grosinger, J. Fellinger, G. Winkler, L. Perner, S. Droste, S. Salman, C. Li, C. Heyl, I. Hartl, and O. Heckl
Flexible all-PM NALM Yb:fiber laser design for frequency comb applications: Operation regimes and their noise properties
Optics Express 28, 18946 (2020)

Abstract: We present a flexible all-polarization-maintaining (PM) mode-locked ytterbium (Yb):fiber laser based on a nonlinear amplifying loop mirror (NALM). In addition to providing detailed design considerations, we discuss the different operation regimes accessible by this versatile laser architecture and experimentally analyze five representative mode-locking states. These five states were obtained in a 78-MHz configuration at different intracavity group delay dispersion (GDD) values ranging from anomalous (-0.035 ps2) to normal (+0.015 ps2). We put a particular focus on the characterization of the intensity noise as well as the free-running linewidth of the carrier-envelope-offset (CEO) frequency as a function of the different operation regimes. We observe that operation points far from the spontaneous emission peak of Yb (~1030 nm) and close to zero intracavity dispersion can be found, where the influence of pump noise is strongly suppressed. For such an operation point, we show that a CEO linewidth of less than 10-kHz at 1 s integration can be obtained without any active stabilization.

J. Fellinger, A. Mayer, W. Grosinger, G. Winkler, L. Perner, S. Droste, S. Salman, C. Li, C. Heyl, and I. Hartl
Flexible Figure-9 Yb: Fiber Laser: Operation Regimes and Noise Performance
(2020)

Abstract: We present a flexible figure-9 Yb: fiber-laser and investigate the impact of intra-cavity group delay dispersion on amplitude/phase noise. We show that the free-running carrier-envelope-offset frequency short-term linewidth can range from several MHz to <10 kHz.

Y. Ma, S. Salman, C. Li, C. Mahnke, J. Fellinger, A. Mayer, O. Heckl, C. Heyl, and I. Hartl
Compact, Alignment-Free, Environmentally Stable Dispersion Compensated Femtosecond Yb-Fiber Oscillator
(2020)
Kein Abstract vorhandenLinkBibTeX

2019

S. Salman, Y. Ma, K. Gürel, S. Schilt, C. Li, P. Pfäfflein, C. Mahnke, J. Fellinger, S. Droste, A. Mayer, O. Heckl, T. Südmeyer, C. Heyl, and I. Hartl
Comparison of two low-noise CEP stabilization methods for an environmentally stable Yb: fiber oscillator
(2019)

Abstract: We demonstrate a low-noise carrier-envelope-offset frequency stabilized all-PM Yb:fiber oscillator. Two different stabilization methods lead to sub 200 mrad integrated fo phase noise (10 Hz to 1 MHz), suitable for comb spectroscopy applications.