Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Arlee V. Smith"'
Autor:
Arlee V. Smith, Jesse J. Smith
Publikováno v:
IEEE Photonics Journal, Vol 5, Iss 5, Pp 7100807-7100807 (2013)
We estimate the Stokes wave starting power for stimulated thermal Rayleigh scattering (STRS) produced by thermal fluctuations in the fiber core that transiently alter the refractive index profile in the core. A transverse temperature gradient creates
Externí odkaz:
https://doaj.org/article/a1fb936d8b0c4ad9b144256a2e905454
Publikováno v:
Optics letters. 47(7)
Demonstration of broadband nanosecond coherent anti-Stokes Raman scattering (CARS) using a burst-mode-pumped noncolinear optical parametric oscillator (NOPO) has been achieved at a pulse repetition rate of 40 kHz. The NOPO is pumped with the 355-nm o
Publikováno v:
AIAA SCITECH 2022 Forum.
Autor:
Jesse J. Smith, Arlee V. Smith
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 20:472-483
We offer an overview of the concepts, numerical methods, and applications of our model of stimulated thermal Rayleigh scattering in large mode area fiber amplifiers. This overview is intended to consolidate and summarize our studies of modal instabil
Autor:
Arlee V. Smith, Jesse J. Smith
Publikováno v:
SPIE Newsroom.
Autor:
Arlee V. Smith, Jesse J. Smith
Publikováno v:
SPIE Proceedings.
We use a detailed numerical model of stimulated thermal Rayleigh scattering to compare mode instability thresholds in cladding pumped Tm 3+ -doped and Yb 3+ -doped fiber amplifiers. The Tm-doped fiber amplifies 2040 nm light using a 790 nm pump; the
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 15:153-158
The irradiances or fluences encountered in pulsed fiber lasers and amplifiers are sometimes high enough to destroy the fiber. The ultimate limit is set by the intrinsic damage threshold irradiance of doped silica. Other nonlinear processes such as se
All Solid-State High-Efficiency Tunable UV Source for Airborne or Satellite-Based Ozone DIAL Systems
Autor:
Arlee V. Smith, D.J. Armstrong
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 13:721-731
We designed, built, and tested two laboratory prototype nanosecond UV sources for airborne or satellite-based ozone differential absorption lidar (DIAL) remote-sensing systems. Our prototypes use a 532-nm second-harmonic pulse from a Q-switched injec
Autor:
Jesse J. Smith, Arlee V. Smith
Publikováno v:
SPIE Proceedings.
We show how signal linewidth affects the gain of stimulated thermal Rayleigh scattering (STRS) which is responsible for mode instability in fiber amplifiers. The gain is reduced if the coherence time of the signal is less than the group velocity indu
Publikováno v:
Review of Scientific Instruments. 74:3250-3257
We describe an apparatus for measuring the second-order nonlinear tensor of crystals based on the measurement technique of separated-beam, nonphase matched, second-harmonic generation. This method is an improvement over traditional methods based on t