Now showing items 1-15 of 15

    • 1 mJ pulse bursts from a Yb-doped fiber amplifier 

      Kalaycıoğlu, Hamit; Eldeniz, Y. B.; Akçaalan, Önder; Yavaş Seydi; Gürel, Kutan; Efe, M.; İlday, Ömer Fatih (Optical Society of America, 2012-05)
      We demonstrate burst-mode operation of a polarization-maintaining Yb-doped fiber amplifier capable of generating 60 μJ pulses within bursts of 11 pulses with extremely uniform energy distribution facilitated by a novel ...
    • 33 Femtosecond Yb-doped optical frequency comb for frequency metrology applications 

      Şenel, Çağrı (Bilkent University, 2013)
      Optical frequency combs have enabled many applications (high precision spectroscopy, table-top optical frequency metrology, optical atomic clocks, etc.), received considerable attention and a Nobel Prize. In this thesis, ...
    • 50-W, 1.6-GHz pulse repetition rate from a burst-mode Yb-doped fiber laser 

      Elahi P.; Ertek A.C.; Eken K.; Ömer Ilday F. (Institute of Electrical and Electronics Engineers Inc., 2017)
      We report a 50-W average power Yb-doped fiber laser amplifier system. The laser system produces bursts at a minimum rate of 200 kHz, with 1.6 GHz intraburst repetition rate. The total energy delivers in a burst is 250 μJ ...
    • All-fiber high-energy yb-doped fiber amplifier 

      Öktem, Bülent; Kalaycioǧlu, Hamit; İlday, F. Ömer (IEEE, 2009)
      We report a robust, all-fiber amplifier seeded by a fiber oscillator. Seed pulses at 1 MHz repetition rate are amplified up to 3 μJ, delivering 1 μJ-energy, 170 fs-long pulses. Duration reduces to 120 fs at 1 μJ amplifier ...
    • Balancing gain narrowing with self phase modulation: 100-fs, 800-nJ from an all-fiber-integrated Yb amplifier 

      Pavlov, Ihor; Rybak, A.; Cenel, C.; İlday, F. Ömer (IEEE, 2013)
      There is much progress in Yb-fiber oscillator-amplifier systems, which enable generation of high-repetition-rate, microjoule energies and sub-picosecond pulse widths [1,2]. Given the extremely large total gain factors to ...
    • Burst-mode thulium all-fiber laser delivering femtosecond pulses at a 1 GHz intra-burst repetition rate 

      Elahı, P.; Kalaycıoğlu, H.; Akçaalan, Ö.; Şenel, Ç.; Ilday, F. Ö. (Optical Society of America, 2017)
      We report on the development of, to the best of our knowledge, the first ultrafast burst-mode laser system operating at a central wavelength of approximately 2 μm, where water absorption and, consequently, the absorption ...
    • Burst-mode Yb fiber amplifier producing 30 μJ individual pulse energy 

      Kalaycıoğlu, Hamit; Burak Eldeniz, Y.; İlday, F. Ömer; Eken, K. (Optical Society of America, 2012)
      We report 30-μJ individual pulse energy for 150-ns long amplified bursts of 0.4 mJ total energy from a 1-kHz Yb-fiber amplifier. Non-uniformity of pulse energy distribution inside amplified bursts is significantly reduced. ...
    • Femtosecond Yb-doped fiber laser system at 1 μm of wavelength with 100-nm bandwidth and variable pulse structure for accelerator diagnostics 

      Winter, A.; Ilday, F. Ö.; Steffen, B. (2007)
      Laser-based diagnostic systems play an increasingly important role in accelerator diagnostics in, for instance, electron bunch length measurements. To date, the laser system of choice for electro-optic experiments has been ...
    • Fiber amplification of pulse bursts up to 20 μj pulse energy at 1 kHz repetition rate 

      Kalaycioglu, H.; Eken, K.; Ilday, F. O. (Optical of Society of America, 2011-08-23)
      We demonstrate burst-mode operation of a polarization-maintaining Yb-doped fiber amplifier. Groups of pulses with a temporal spacing of 10 ns and 1 kHz overall repetition rate are amplified to an average pulse energy of ...
    • Influence of pump noise and modulation on in-fiber amplification of broadband pulses 

      Gürel, Kutan; Budunoğlu, İbrahim Levent; Şenel, Çağrı; Paltani, Punya Prasanna; İlday, F. Ömer (Optical Society of America, 2011)
      We investigate experimentally and theoretically the coupling of pump laser modulation and noise fluctuations to the output power of a fiber amplifier for broadband pulse trains using the modulation transfer function approach. ...
    • Innovative laser sources operating around 2 μm 

      Kracht D.; Sayinc H.; Yilmaz S.; Wysmolek M.; Hausmann K.; Ottenhues C.; Wandt D.; Wienke A.; Neumann J. (Elsevier B.V., 2016)
      We report on a variety of continuous wave and pulsed laser sources based on Thulium- and Holmium-doped materials, emitting in the spectral range around 2 μm. This includes continuous wave Thulium-doped fiber lasers which ...
    • Microjoule pulse energies at 1 MHz repetition rate from an all-fiber nonlinear chirped-pulse amplifier 

      Kalaycioǧlu H.; Oktem, B.; Ömer Ilday F. (Optical Society of America, 2010)
      We report a 1-MHz robust, all-fiber amplifier-oscillator system. Amplified pulses of 3 μJ are externally compressed to 140 fs. The highest peak power from an integrated fiber source, up to 50 kW, is obtained. © 2010 Optical ...
    • Nonlinearity Management: From Fiber Oscillators to Amplifiers 

      Ilday, F. O.; Senel, C.; Hamid, R.; Teamir, T.; Pavlov, I.; Tegin, U.; Ergecen, E.; Elahi, P.; Iegorov, R. (Institute of Electrical and Electronics Engineers Inc., 2016)
      While the standard approach to performance scaling in fiber lasers seeks to reduce nonlinear effects through chirping or mode scaling, I will review recent progress in a complementary approach, whereby the governing dynamics ...
    • Pulse fidelity control in a 20-μJ sub-200-fs monolithic Yb-fiber amplifier 

      Fernández, A.; Zhu, L.; Verhoef, A. J.; Sidorov-Biryukov, D.; Pugzlys, A.; Galvanauskas, A.; Ilday, F. Ö.; Baltuška, A. (Pleiades Publishing, 2011-06-04)
      We discuss nonlinearity management versus energy scalability and compressibility in a three-stage monolithic 100-kHz repetition rate Yb-fiber amplifier designed as a driver source for the generation and tunable parametric ...
    • Time-and position-dependent modeling of high-power low-repetition-rate Er-Yb-fiber amplifier 

      Pavlov, Ihor; Dülgergil, E.; Elahi, Parviz; İlday, F. Ömer (IEEE, 2013)
      There is rapid progress in the development of high-power fiber lasers due to their robust operation, low cost, high beam quality at high powers. There are various applications, such as laser sensing, LIDAR applications, ...