Exploració per autor "Ebrahim-Zadeh, Majid"

Ara es mostren els items 21-35 de 35

    • Performance characterization of midinfrared difference frequency generation in orientation-patterned gallium phosphide 

      Wei, Junxiong; Chaitanya Kumar, S.; Hanyu, Ye; Schunemann, Peter G.; Ebrahim-Zadeh, Majid (SPIE, 2018-02-15)
      Comunicació de congrés
      Accés obert
      Orientation-patterned gallium phosphide (OP-GaP) is a recently developed nonlinear material with wide transparency across 0.8-12 μm and high nonlinearity (d14∼70 pm/V), which is a promising candidate material for mid-infrared ...

    • Phase-Modulation-Mode-Locked Continuous-Wave MgO:PPLN Optical Parametric Oscillator 

      Devi, Kavita; Kumar, S. Chaitanya; Ebrahim-Zadeh, Majid (IEEE, 2015-03-05)
      Article
      Accés obert
      We report phase-modulation mode-locking of a continuous-wave (cw) singlyresonant optical parametric oscillator (OPO) in the near- and mid-infrared based on MgO-doped periodically poled LiNbO3 (MgO:PPLN) and pumped by an ...

    • Picosecond difference-frequency-generation in orientation-patterned gallium phosphide 

      Casals, J.; Parsa, S.; Chaitanya Kumar, S.; Devi, K.; Schunemann, P. G.; Ebrahim-Zadeh, Majid (OSA, 2017-08-07)
      Article
      Accés obert
      We report the generation of tunable high-repetition-rate picosecond radiation in the mid-infrared using the new quasi-phase-matched nonlinear material of orientation-patterned gallium phosphide (OP-GaP). The source is ...

    • Pump-tuned deep-infrared femtosecond optical parametric oscillator across 6-7 μm based on CdSiP2 

      Chaitanya Kumar, S.; Esteban-Martín, Adolfo; Santana, A.; Zawilski, Kevin T.; Schunemann, P. G.; Ebrahim-Zadeh, Majid (OSA, 2016-07-15)
      Article
      Accés obert
      We report on a high-power femtosecond optical parametric oscillator (OPO) at 80 MHz repetition rate, tunable across 6318–7061 nm in the deep-infrared (deep-IR) using pump wavelength tuning. The OPO, based on CdSiP2CdSiP2 ...

    • Room-temperature, rapidly tunable, green-pumped continuous-wave optical parametric oscillator 

      Devi, Kavita; Ebrahim-Zadeh, Majid (OSA, 2017-06-29)
      Accés obert
      We report the first realization of a stable, room-temperature, green-pumped cw OPO using fan-out-grating MgO:sPPLT, providing rapid, continuous and wide-tuning across 734-1929nm, 2.2W of output-power, frequency-stability ...

    • Single-Stage Ti:sapphire-Pumped Deep-Infrared Femtosecond Optical Parametric Oscillator based on CdSiP2 

      O’Donnell, Callum F.; Chaitanya Kumar, S.; Schunemann, P. G.; Zawilski, Kevin T.; Ebrahim-Zadeh, Majid (IEEE, 2018-02-20)
      Comunicació de congrés
      Accés obert
      We report a high-repetition-rate femtosecond optical parametric oscillator (OPO) for the deep-infrared (deep-IR) based on the nonlinear optical crystal, CdSiP 2 (CSP), pumped directly by a Ti:sapphire laser, for the first ...

    • Single-Stage Ti:sapphire-Pumped Deep-Infrared Femtosecond Optical Parametric Oscillator based on CdSiP2 

      O´Donnell, Callum; Chaitanya Kumar, S.; Schunemann, P. G.; Zawilski, Kevin T.; Ebrahim-Zadeh, Majid (OSA, 2017-10-01)
      Comunicació de congrés
      Accés obert
      We report the first deep-infrared femtosecond OPO based on CdSiP2 synchronously-pumped directly by a KLM Ti:sapphire laser, tunable across 7508-8210 nm, and generating as much as 12 mW at 7508 nm in good beam-quality.

    • Singly-Resonant Optical Parametric Oscillator Based on Orientation-Patterned Gallium Phosphide 

      Ye, Hanyu; Chaitanya Kumar, S.; Wei, Junxiong; Schunemann, P. G.; Ebrahim-Zadeh, Majid (OSA, 2018-03-26)
      Comunicació de congrés
      Accés obert
      We report a pulsed singly-resonant optical parametric oscillator based on orientation-patterned gallium phosphide pumped by a Q-switched Nd:YAG laser. The mid-IR idler can be tuned across 2.8-3.1 μm with an average power of 20 mW.

    • Stable, High-Average-Power, Degenerate Optical Parametric Oscillator at 2.1 μm 

      Ye, Hanyu; Nandy, Biplob Kumar; Chaitanya Kumar, S.; Ebrahim-Zadeh, Majid (OSA, 2018-03-26)
      Comunicació de congrés
      Accés obert
      We describe a degenerate 1.064-μm-pumped pulsed optical parametric oscillator based on MgO:PPLN in compact Littrow-grating cavity configuration, providing 2.7W of average power at 2.1μm with high spectral and power stability ...

    • Stable, high-power, Yb-fiber-based, picosecond ultraviolet generation at 355 nm using BiB3O6 

      Chaitanya Kumar, S.; Sanchez Bautista, Enrique; Ebrahim-Zadeh, Majid (OSA, 2015-02-01)
      Article
      Accés obert
      We report a stable, high-power, high-repetition-rate, picosecond ultraviolet (UV) source at 355 nm based on singlepass sum-frequency generation of a mode-locked Yb-fiber laser at 1064 nm in the nonlinear crystal BiB3O6. ...

    • Ti:sapphire-pumped deep-infrared femtosecond optical parametric oscillator based on CdSiP2 

      Ramaiah-Badarla, V.; Chaitanya Kumar, S.; Esteban-Martin, A.; Devi, K.; Zawilski, Kevin T.; Schunemann, P. G.; Ebrahim-Zadeh, Majid (OSA, 2016-04-15)
      Article
      Accés obert
      We report on a femtosecond optical parametric oscillator (OPO) for the deep-infrared (deep-IR) based on the Kerr-lens-mode-locked Ti:sapphire laser as the pump source. By deploying a novel cascaded intracavity arrangement, ...

    • Tunable high-average-power optical parametric oscillators near 2 μm 

      Nandy, Biplob Kumar; Chaitanya Kumar, S.; Canals Casals, J.; Ye, Hanyu; Ebrahim-Zadeh, Majid (OSA, 2018-11-29)
      Article
      Accés obert
      We report on the development of high-average-power nanosecond and picosecond laser sources tunable near 2 μm based on optical parametric oscillators (OPOs) pumped by solid-state Nd:YAG and Yb-fiber lasers at 1.064 μm. ...

    • Two-crystal, synchronously pumped, femtosecond optical parametric oscillator 

      Ramaiah-Badarla, V.; Esteban-Martin, A.; Ebrahim-Zadeh, Majid (OSA, 2015-02-01)
      Article
      Accés obert
      We demonstrate a femtosecond optical parametric oscillator based on two nonlinear crystals synchronously pumped by a single ultrafast laser for efficient intracavity signal amplification and output power enhancement. By ...

    • Ultrafast optical vortex beam generation in the ultraviolet 

      Apurv Chaitanya, N.; Chaitanya Kumar, S.; Devi, Kavita; Samanta, G. K.; Ebrahim-Zadeh, Majid (OSA, 2016-06-01)
      Article
      Accés obert
      We report on the generation of ultrafast vortex beams in the deep ultraviolet (DUV) wavelength range at 266 nm, for the first time to our knowledge. Using a Yb-fiber-based green source in combination with two spiral phase ...

    • Yb-fiber-laser-based, 1.8  W average power, picosecond ultraviolet source at 266  nm 

      Chaitanya Kumar, S.; Canals Casals, J.; Sanchez Bautista, E.; Devi, K.; Ebrahim-Zadeh, Majid (OSA, 2015-05-15)
      Article
      Accés obert
      We report a compact, stable, high-power, picosecond ultraviolet (UV) source at 266 nm based on simple single-pass two-step fourth-harmonic generation (FHG) of a mode-locked Yb-fiber laser at 79.5 MHz in LiB3O5 (LBO) and ...