@article{ElsnerUllmannHeueretal.2012,
  author    = {Elsner, Robert and Ullmann, Roland and Heuer, Axel and Menzel, Ralf and Ostermeyer, Martin},
  title     = {Two-dimensional modeling of transient gain gratings in saturable gain media},
  series = {OPTICS EXPRESS},
  volume    = {20},
  journal   = {OPTICS EXPRESS},
  number    = {7},
  publisher = {OPTICAL SOC AMER},
  address   = {WASHINGTON},
  issn      = {1094-4087},
  doi       = {10.1364/OE.20.006887},
  pages     = {6887 -- 6896},
  year      = {2012},
  abstract  = {A transient two-dimensional model describing degenerate four-wave mixing inside saturable gain media is presented. The new model is compared to existing one-dimensional models with their qualitative results confirmed. Large quantitative differences with respect to peak reflectivity and optimum pump fluence are observed. Furthermore, the influence of the beam focus size, the transverse position and the crossing angle on the reflectivity of the grating is investigated using the improved model. It is demonstrated that the phase conjugate reflectivity depends sensitively on the transverse features of the interacting beams with a transverse shift in the position of the pump beams yielding a threefold improvement in reflectivity. (C) 2012 Optical Society of America},
  language  = {en}
}
@article{OstermeyerWaltingerGregor2009,
  author    = {Ostermeyer, Martin and Waltinger, Thomas and Gregor, Markus},
  title     = {Frequency stabilization of a Q-switched Nd:YAG laser oscillator with stability better 300 kHz following an rf- sideband scheme},
  issn      = {0030-4018},
  doi       = {10.1016/j.optcom.2009.04.063},
  year      = {2009},
  abstract  = {A frequency stabilization scheme following the Pound-Drever-Hall technique modified with a sample and hold circuit has been applied to a Q-switched diode-pumped Nd:YAG ring oscillator. The high-power ring is injection seeded by a monolithic non-planar ring laser oscillator (NPRO). The slave oscillator emits pulses of 23 ns duration and 20 mJ pulse energy with almost diffraction limited beam quality (M-2 = 1.2) at a repetition rate of 400 Hz. The short-term fluctuation of the center frequency from pulse to pulse is 290 kHz. The oscillator is designed for applications within lidar measurements.},
  language  = {en}
}
@article{OstermeyerPuhlmannKorn2009,
  author    = {Ostermeyer, Martin and Puhlmann, Dirk and Korn, Dietmar},
  title     = {Quantum diffraction of biphotons at a blazed grating},
  issn      = {0740-3224},
  year      = {2009},
  abstract  = {Correlations between photons are interesting for a number of applications and concepts in metrology, in particular for resolution improvements in different methods of quantum imaging. We demonstrate the application of a blazed grating for the characterization of the degree of spatial correlation of biphotons. The biphotons are generated by type II parametric downconversion. Compared to an ordinary transmission grating, a blazed grating shows a high diffraction efficiency only for a single order of diffraction. Thus, higher intensities in the Fraunhofer far field behind the grating, and easier photon counting, can be achieved. The distribution of the two-photon rate in the Fraunhofer far field of the blazed grating can show one additional order of diffraction with a visibility related to the degree of correlation of the biphotons. The number of spatial modes that are populated by the biphoton beam can be directly altered in our experiments. The relation of the spatial mode order of the photon propagation to the observable degree of spatial correlation of the biphotons is investigated and related to the Schmidt number of spatially entangled modes.},
  language  = {en}
}
@article{OstermeyerKornPuhlmannetal.2009,
  author    = {Ostermeyer, Martin and Korn, Dietmar and Puhlmann, Dirk and Henkel, Carsten and Eisert, Jens},
  title     = {Two-dimensional characterization of spatially entangled photon pairs},
  issn      = {0950-0340},
  doi       = {10.1080/09500340903359962},
  year      = {2009},
  abstract  = {We characterize the entanglement in position and momentum of photon pairs generated in type-II parametric down- conversion. Coincidence maps of the photon positions in the near-field and far-field planes are observed in two transverse dimensions using scanning fiber probes. We estimate the covariance matrix of an effective two-mode system and apply criteria for entanglement based on covariance matrices to certify space-momentum entanglement. The role of higher- order spatial modes for observing spatial entanglement between the two photons is discussed.},
  language  = {en}
}
@article{KappeMenzelOstermeyer2006,
  author    = {Kappe, Philip and Menzel, Ralf and Ostermeyer, Martin},
  title     = {Analysis of the temporal and spectral output properties of a mode-locked and Q-switched laser oscillator with a nonlinear mirror based on stimulated Brillouin scattering},
  issn      = {1050-2947},
  doi       = {10.1103/Physreva.74.013809},
  year      = {2006},
  abstract  = {The emission dynamics of a mode-locked laser oscillator with a nonlinear mirror based on stimulated Brillouin scattering (SBS) has been investigated with regard to its spectrum and to its intensity distribution. The investigation was carried out experimentally as well as by numerical simulations. The laser yields trains of pulses with measured durations of 410 ps and energies of the single pulse of up to 2 mJ. Two theoretical models describing the complex emission dynamics of a mode-locked SBS-laser oscillator are introduced. The first model consists of spectrally resolved laser rate equations and thus describes the mode locking in the frequency domain by the superposition of the longitudinal resonator modes. The SBS-Q-switch is incorporated by a phenomenological description of the time dependent SBS reflectivity. Numerical simulations based on this model yield the evolution of a few 100 longitudinal laser modes and the corresponding intensity distribution during the course of a Q-switch pulse with 10-ps resolution. The influences of the different components on the spectrum and thus on the pulse duration will be discussed. The second model describes all occurring dynamics in the time domain providing easy access to the study of misalignment on the output dynamics. Results of numerical simulations of both models and measurement results are compared},
  language  = {en}
}
@article{HeuerMenzelOstermeyer1996,
  author    = {Heuer, Axel and Menzel, Ralf and Ostermeyer, Martin},
  title     = {Power tunable Nd-oscillators with diffraction limited beams via SBS phase conjugation},
  year      = {1996},
  language  = {en}
}
@article{OstermeyerHeuerMenzel1996,
  author    = {Ostermeyer, Martin and Heuer, Axel and Menzel, Ralf},
  title     = {Q-switching of Nd-lasers with high repetition rates by SBS phase conjugation},
  year      = {1996},
  language  = {en}
}
@article{OstermeyerHeuerWatermannetal.1996,
  author    = {Ostermeyer, Martin and Heuer, Axel and Watermann, V. and Menzel, Ralf},
  title     = {Resonators with phase conjugating SBS-mirror for solid state lasers with high output powers},
  year      = {1996},
  language  = {en}
}
@article{OstermeyerHeuerWatermannetal.1996,
  author    = {Ostermeyer, Martin and Heuer, Axel and Watermann, V. and Menzel, Ralf},
  title     = {Single rod Nd:laser with phase conjugating SBS-mirror and large transversal mode for average output powers above 20 Watts},
  year      = {1996},
  language  = {en}
}
@article{OstermeyerMenzel1997,
  author    = {Ostermeyer, Martin and Menzel, Ralf},
  title     = {34 Watt flash lamp pumped single rod ND:YAG laser with 1.2 * DL beam quality via special resonator design},
  year      = {1997},
  language  = {en}
}
@article{HeuerHodgsonLorenzetal.1997,
  author    = {Heuer, Axel and Hodgson, N. and Lorenz, Dieter and Ostermeyer, Martin and Menzel, Ralf},
  title     = {Solid state lasers with high brightness via optical phase conjugation for micromachining},
  year      = {1997},
  language  = {en}
}
@article{MittlerOstermeyerHeueretal.1997,
  author    = {Mittler, Kay and Ostermeyer, Martin and Heuer, Axel and Menzel, Ralf},
  title     = {Longitudinal mode structure of Nd-lasers with phase conjugating mirrors based on stimulated Brillouin scattering in different materials},
  year      = {1997},
  language  = {en}
}
@article{OstermeyerLorenzMenzel1997,
  author    = {Ostermeyer, Martin and Lorenz, Dieter and Menzel, Ralf},
  title     = {Nd-laser oscillators with phase-conjugating SBS mirrors for high average output powers and fundamental mode operation},
  year      = {1997},
  language  = {en}
}
@article{OstermeyerLorenzHodgsonetal.1997,
  author    = {Ostermeyer, Martin and Lorenz, Dieter and Hodgson, N. and Menzel, Ralf},
  title     = {Transverse Modes in Laser Resonators with Phase Conjugating Mirror Based on Stimulated Brillouin Scattering (SBS)},
  year      = {1997},
  language  = {en}
}
@article{MenzelOstermeyer1998,
  author    = {Menzel, Ralf and Ostermeyer, Martin},
  title     = {Fundamental mode determination for guaranteeing diffrraction limited beam quality of lasers with high output powers},
  year      = {1998},
  language  = {en}
}
@article{OstermeyerHeuerMenzel1998,
  author    = {Ostermeyer, Martin and Heuer, Axel and Menzel, Ralf},
  title     = {27 Watt average output power with 1.2*DL beam quality from a single rod Nd:YAG-Laser with phase conjugating SBS- mirror},
  year      = {1998},
  language  = {en}
}
@article{OstermeyerHodgsonMenzel1998,
  author    = {Ostermeyer, Martin and Hodgson, N. and Menzel, Ralf},
  title     = {High-power, fundamental mode Nd:YALO laser using a phase-conjugate resonator based on SBS},
  year      = {1998},
  language  = {en}
}
@article{OstermeyerMittlerMenzel1999,
  author    = {Ostermeyer, Martin and Mittler, Kay and Menzel, Ralf},
  title     = {Q switch and longitudinal modes of a laser oscillator with a stimulated-Brillouin-scattering mirror},
  year      = {1999},
  language  = {en}
}
@article{OstermeyerMenzel1999,
  author    = {Ostermeyer, Martin and Menzel, Ralf},
  title     = {Single rod efficient Nd:YAG and Nd:YALO-lasers with average output powers of 46 and 47 W in diffraction limited beams with M2 < 1.2 and 100 W with M2 < 3.7},
  year      = {1999},
  language  = {en}
}
@article{OstermeyerMenzel1999,
  author    = {Ostermeyer, Martin and Menzel, Ralf},
  title     = {50 Watt average output power with 1.2*DL beam quality from a single rod Nd:YALO laser with phase-conjugating SBS mirror},
  year      = {1999},
  language  = {en}
}
@article{KlemzKubinaOstermeyeretal.2001,
  author    = {Klemz, Guido and Kubina, P. and Ostermeyer, Martin and Menzel, Ralf},
  title     = {Diode pumped high power TEM_00 Nd:YAG rod laser with birefringence compensation},
  year      = {2001},
  language  = {en}
}
@article{OstermeyerKlemzMenzel2002,
  author    = {Ostermeyer, Martin and Klemz, Guido and Menzel, Ralf},
  title     = {Double rod Nd:YAG laser with 180 W average output and diffraction limited beam quality via path-matched birefringence compensation},
  isbn      = {0-8194-4368-9},
  year      = {2002},
  language  = {en}
}
@article{OstermeyerKlemzHeueretal.2002,
  author    = {Ostermeyer, Martin and Klemz, Guido and Heuer, Axel and Menzel, Ralf},
  title     = {High Brightness Double and Single Rod Nd:YAG Laser Oscillators with up to 180 W and M2 < 1.2},
  year      = {2002},
  language  = {en}
}
@article{OstermeyerKlemzKubinaetal.2002,
  author    = {Ostermeyer, Martin and Klemz, Guido and Kubina, P. and Menzel, Ralf},
  title     = {Quasi-continuous-wave birefringence-compensated single- and double-rod Nd : YAG lasers},
  year      = {2002},
  language  = {en}
}
@article{OstermeyerMenzel2004,
  author    = {Ostermeyer, Martin and Menzel, Ralf},
  title     = {Laser resonators with brillouin mirrors},
  series = {Phase conjugate laser optics},
  journal   = {Phase conjugate laser optics},
  publisher = {Wiley},
  address   = {Hoboken, NJ},
  isbn      = {0-471-43957-6},
  year      = {2004},
  language  = {en}
}
@article{KappeOstermeyerMenzel2005,
  author    = {Kappe, Philip and Ostermeyer, Martin and Menzel, Ralf},
  title     = {Active mode locking of a phase-conjugating SBS-laser oscillator},
  issn      = {0946-2171},
  year      = {2005},
  abstract  = {We present a flashlamp-pumped Nd: YAG laser simultaneously emitting pulse structures on microsecond, nanosecond and picosecond time scales. Within a microsecond flashlamp pump pulse a nonlinear reflector based on stimulated Brillouin scattering (SBS) generates several Q-switch pulses. The phase-conjugating effect of the SBS reflector provides a compensation of phase distortions generated inside the laser rod, resulting in transverse fundamental mode operation. Additional acousto-optic loss modulation inside the resonator leads to mode locking. As a result, each Q-switch pulse is subdivided into several picosecond pulses. Energies of up to 2 mJ for the mode-locked pulses with durations between 220 and 800 ps are demonstrated. The wide variability of the laser's temporal output parameters as well as its high beam quality make it a splendid tool for fundamental research in laser materials processing},
  language  = {en}
}
@article{OstermeyerKappeMenzeletal.2005,
  author    = {Ostermeyer, Martin and Kappe, Philip and Menzel, Ralf and Wulfmeyer, Volker},
  title     = {Diode-pumped Nd : YAG master oscillator power amplifier with high pulse energy, excellent beam quality, and frequency-stabilized master oscillator as a basis for a next-generation lidar system},
  issn      = {0003-6935},
  year      = {2005},
  abstract  = {In the original publication [Ostermeyer et al., Appl. Opt., 44, 582-590 (2005)], Fig. 5 appeared twice as Figs. 4 and 5. This inaccuracy is corrected here. (c) 2005 Optical Society of America},
  language  = {en}
}
@article{OstermeyerKlemzKubinaetal.2005,
  author    = {Ostermeyer, Martin and Klemz, Guido and Kubina, P. and Menzel, Ralf},
  title     = {Enhanced brightness and extraction efficiency of Nd:YAG rod lasers resulting in 180 W output power with M2<1.2},
  isbn      = {1-557-52697-4},
  year      = {2005},
  language  = {en}
}
@article{KappeOstermeyerMenzel2005,
  author    = {Kappe, Philip and Ostermeyer, Martin and Menzel, Ralf},
  title     = {Active mode locking of a phase-conjugating SBS-laser oscillator},
  issn      = {0946-2171},
  year      = {2005},
  language  = {en}
}
@article{StrasserOstermeyer2006,
  author    = {Strasser, A and Ostermeyer, Martin},
  title     = {Improving the brightness of side pumped power amplifiers by using core doped ceramic rods},
  year      = {2006},
  abstract  = {In side pumped laser head geometries good extraction of energy has to be weighted against diffraction effects of the amplified beam. Beam clipping at the aperture of laser rods can be avoided by using an undoped cladding around the doped core. The wings of e. g. Gaussian beams can be accommodated in the cladding. Phase distortion by the refractive index step of the rod can be compensated by a phase conjugating mirror in double pass configuration. In our proof of principle experiment the brightness of the beam from core doped amplifier rods was shown to be doubled compared to a conventional rod of the same outer diameter. (c) 2006 Optical Society of America},
  language  = {en}
}
@article{OstermeyerMudgeVeitchetal.2006,
  author    = {Ostermeyer, Martin and Mudge, Damien and Veitch, Peter John and Munch, Jesper},
  title     = {Thermally induced birefringence in Nd : YAG slab lasers},
  doi       = {10.1364/AO.45.005368},
  year      = {2006},
  abstract  = {We study thermally induced birefringence in crystalline Nd:YAG zigzag slab lasers and the associated depolarization losses. The optimum crystallographic orientation of the zigzag slab within the Nd:YAG boule and photoelastic effects in crystalline Nd:YAG slabs are briefly discussed. The depolarization is evaluated using the temperature and stress distributions, calculated using a finite element model, for realistically pumped and cooled slabs of finite dimensions. Jones matrices are then used to calculate the depolarization of the zigzag laser mode. We compare the predictions with measurements of depolarization, and suggest useful criteria for the design of the gain media for such lasers.},
  language  = {en}
}