• 1.9 micron Tm3+-doped germanate fiber laser source for Si-processing 

      Dvoyrin, Vladislav; Sorokina, Irina T; Okhotnikov, Oleg; Mashinsky, Valery M.; Ischakova, Lyudmila D.; Dianov, Evgenii M; Khopin, Vladimir F.; Guryanov, Aleksey N. (Chapter, 2011)
      We report development of a novel Tm3+ -doped fiber laser source at 1.86 μm based on highly nonlinear 55GeO2-45SiO2 dispersion shifted fiber, applicable to 3D-volume microprocessing of Si.
    • 3W Raman Soliton Tunable between 2-2.2 µm in Tm-Doped Fiber MOPA 

      Dvoyrin, Vladislav; Klimentov, Dmitry; Sorokina, Irina T (Chapter, 2013)
      The simple and compact Tm-doped fiber MOPA generates tunable between 2-2.2 µm Raman solitons with average power up to 3W. Pulses as short as 130 fs and energy up to 38 nJ were demonstrated.
    • 5 W Supercontinuum Generation at 1.9-2.5 μm from a Tm-Doped All-Fiber MOPA Laser 

      Dvoyrin, Vladislav; Sorokina, Irina T (Chapter, 2013)
      We report a simple method of generating flat-top high power (5W) supercontinuum from an all-silica-fiber Tm-MOPA laser emitting in the interesting for applications 1.96-2.48 μm range (at -5 dB level), covering transparency ...
    • 6.8 W all-fiber supercontinuum source at 1.9-2.5 um 

      Dvoyrin, Vladislav; Sorokina, Irina T (Journal article; Peer reviewed, 2014)
      We report a simple method of generating a spectrally flat and high average power spectral density (up to 14 mW/nm) optical supercontinuum in the 1.95–2.5 μm range covering a transparency window of the atmosphere. The ...
    • All-Fiber Optical Supercontinuum Source at 1.7-2.9 μm 

      Dvoyrin, Vladislav; Sorokina, Irina T (Chapter, 2013)
      We report supercontinuum generation in the range of 1.7-2.9 μm at up to 3.08 W of output power from a Tm-doped pulsed fiber laser emitting between 1.9-2.5 μm, spliced with a nonlinear fluoride or germanate fiber.
    • All-fiber optical supercontinuum sources in 1.7-3.2 μm range 

      Dvoyrin, Vladislav; Sorokina, Irina T (Journal article; Peer reviewed, 2014)
      We report supercontinuum generation in the 1.7-2.9 μm range with up to 3.08 W of output power and in the range of 1.93-3.18 μm with up to 3.8 W of output power from all-fiber MOPA pulsed systems with Tm-doped fiber mode-locked ...
    • Broad-band GVD Measurement of Specialty Fibers in mid-IR 

      Klimentov, Dmitry; Dvoyrin, Vladislav; Tolstik, Nikolai; Sorokina, Irina T (Chapter, 2012)
      We demonstrate a novel interferometeric setup for broad-band (>300nm) GVD measurements in short-length optical fibers in the mid-IR wavelength range using a superluminescent fiber source and investigate specialty fibers ...
    • Broadband Dispersion Measurement of ZBLAN, Germanate and Silica Fibers in MidIR 

      Klimentov, Dmitry; Tolstik, Nikolai; Dvoyrin, Vladislav; Kalashnikov, Valdimir L; Sorokina, Irina T (Journal article, 2012)
      We report the first ultra-broad band dispersion measurements in short-length ZBLAN, germanate and silica-based optical fibers in the near- and midIR wavelength ranges between 1.7 and 2.0 μm and from 2.3 to 2.45 μm, using ...
    • Broadband method for group velocity dispersion measurements in the mid-infrared 

      Klimentov, Dmitry; Tolstik, Nikolai; Dvoyrin, Vladislav; Sorokina, Irina T (Journal article; Peer reviewed, 2011)
      A setup for broadband measurements of dispersion parameter in optical fibers based on the Mach–Zehnder interferometer is developed. Tm-doped fiber pumped at 1.61 μm was used as a source of broadband emission, that allowed ...
    • Clad-Pumped YDFLs Operating in the 1150-1200 nm Range 

      Dvoyrin, Vladislav; Medvedkov, OI; Sorokina, Irina T (Chapter, 2012)
      We demonstrate clad-pumped YDFLs operating at the 1147, 1160 and 1180 nm wavelengths at 35, 21 and 10.5 W of output power, respectively; operation at 1200 nm was realized for the first time.
    • Continuum generation in Mid-IR from Tm-doped germanate fiber using femtosecond Cr:ZnS laser 

      Tolstik, Nikolai; Klimentov, Dmitry; Dvoyrin, Vladislav; Sorokina, Irina T; Kalashnikov, Vladimir; Sorokin, Evgeni (Chapter, 2012)
      The mid-IR supercontinuum generation in fibers has received much attention due to its broad applicability to high-resolution spectroscopy and trace gas analysis, frequency metrology and optical coherence tomography (OCT). ...
    • Dispersion Measurement of Infrared Specialty Fibers 

      Klimentov, Dmitry; Tolstik, Nikolai; Kalashnikov, VL; Dvoyrin, Vladislav; Sorokina, Irina T (Chapter, 2012)
      We demonstrate broadband (>250nm) dispersion measurements and theoretical calculations in a set of short-length specialty fibers in the 2.16-2.41µm wavelength range for femtosecond mid-IR applications using an ultrabroadband ...
    • Emission decay and energy transfer in Yb/Tm Y-codoped fibers based on nano-modified glass 

      Klimentov, Dmitry; Dvoyrin, Vladislav; Halder, Arindam; Paul, Mukul Chandra; Das, Shyamal; Bhadra, Shyamal K; Sorokina, Irina T (Journal article, 2015)
      We report the results of an experimental investigation and theoretical analysis of luminescence decay in Yb/Tm Y-codoped fibers based on nano-modified glass. Based on the experimental results, numerical simulations allowed ...
    • Graphene-mode-locked Holmium Fiber Laser Operating Beyond 2.1 µm 

      Dvoyrin, Vladislav; Tolstik, Nikolai; Sorokin, E.; Sorokina, Irina T; Kurkov, A. (Chapter, 2015)
    • High Energy Broadband Femtosecond Pulse Generation From Tm-doped Fiber MOPA 

      Klimentov, Dmitry; Dvoyrin, Vladislav; Tolstik, Nikolai; Sorokina, Irina T (Chapter, 2016)
      We report generation of high energy (up to 280 nJ), broadband (over 450 nm between 1.95 - 2.4 µm), 200 fs pulses at 2.1 W average power directly from a Tm-fiber MOPA laser.
    • Mid-IR ultrashort pulsed fiber-based lasers 

      Sorokina, Irina T; Dvoyrin, Vladislav; Tolstik, Nikolai; Sorokin, Evgeni (Journal article; Peer reviewed, 2014)
      We review the latest breakthroughs in ultrafast fiber laser technology in the mid-IR wavelength range ≥2 μm. In particular, we concentrate on two novel laser systems built around passively mode-locked Tm:fiber lasers and ...
    • Mode-Locked Tm-Doped Fiber Lasers Based on Highly Ge-Doped Fibers 

      Klimentov, Dmitry; Dvoyrin, Vladislav; Sorokina, Irina T (Chapter, 2015)
    • Multi-Kilowatt Peak Power Nanosecond Er-Doped Fiber Laser 

      Dvoyrin, Vladislav; Klimentov, Dmitry; Klepsvik, JO; Mazaeva, IV; Sorokina, Irina T (Journal article, 2016)
      We report a two-stage diode-pumped Er-doped fiber amplifier operating at the wavelength of 1550 nm at the repetition rate of 10-100 kHz with an average output power of up to 10 W. The first stage comprising Er-doped fiber ...
    • Novel Y2O3-codoped Yb/Tm-doped picosecond fiber laser 

      Dvoyrin, Vladislav; Klimentov, Dmitry; Halder, Arindam; Mukul C, Paul; Mrinmay, Pal; Bhadra, Shyamal K; Kir'yanov, Alexander; Sorokina, Irina T (Journal article; Peer reviewed, 2013)
      We demonstrate the novel picosecond mode-locked Y2O3-codoped Yb/Tm-doped fiber lasers, operating at 1950 nm and producing pulses of up to 1 nJ energy, using a SESAM and an Er-doped pump fiber laser operating at the wavelength ...
    • Spectral Broadening of mid-IR Femtosecond Pulses in Highly Germanium Doped Fiber 

      Tolstik, Nikolai; Klimentov, Dmitry; Dvoyrin, Vladislav; Sorokina, Irina T; Sorokin, Evgeni; Kalashnikov, Vladimir (Chapter, 2012)
      We demonstrate significant spectral broadening of femtosecond mid-IR pulses directly from the oscillator in a simple step-index single-mode highly Ge-doped fiber at only 150 pJ pulse energies in the spectral window around 2.38 µm.