Zobrazeno 1 - 10
of 756
pro vyhledávání: '"D.C. Hanna"'
Autor:
W.A. Clarkson, D.C. Hanna
Publikováno v:
Advances in Lasers and Applications ISBN: 9781003209652
Decreasing costs of diode lasers and increasing diode powers have gone hand-in-hand and so fuelled this interest in diode-pumped lasers. As these trends continue, so there is an inexorable move towards diode-pumped lasers of ever greater power. The e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87953b39492497c090f6e263365040d9
https://doi.org/10.1201/9781003209652-1
https://doi.org/10.1201/9781003209652-1
Autor:
A. M. de Paula, Edward T. F. Rogers, William S. Brocklesby, C.A. Froud, Matthew Praeger, S. L. Stebbings, D.C. Hanna, Jeremy J. Baumberg, Jeremy G. Frey
Publikováno v:
Nature Physics. 3:176-179
High-harmonic generation (HHG) offers better coherence1, shorter pulse durations2 and far greater accessibility than synchrotron sources3. These factors make HHG an increasingly important source of soft X-rays and an excellent resource in many emergi
Autor:
Pete Smith, D.C. Hanna, J. Aus der Au, Rüdiger Paschotta, Thomas Südmeyer, Graeme W. Ross, Ursula Keller
Publikováno v:
Journal of Physics D: Applied Physics. 34:2433-2439
We describe two novel parametric systems for wavelength-tunable ultrashort pulse generation in the spectral range around 1.5 µm. We demonstrate the first single-pass optical parametric generator (OPG) that is directly pumped by a mode-locked laser a
Publikováno v:
Journal of Physics D: Applied Physics. 34:2440-2454
The operating characteristics of a synchronously pumped optical parametric oscillator, based on periodically poled lithium niobate (PPLN), with a diffraction grating as the tuning element, are described and compared with design expectations. Operatio
Publikováno v:
Scopus-Elsevier
We report on the fabrication of what we believe is the first example of a two-dimensional (2D) nonlinear photonic crystal [Berger, Phys. Rev. Lett. 81, 4136 (1998)], where the refractive index is constant but where the 2nd order nonlinear susceptibil
Autor:
Francesco Gringoli, Pete Smith, C. De Angelis, Alain Barthelemy, D.C. Hanna, Graeme W. Ross, Vincent Couderc, B. Bourliaguet
Publikováno v:
Scopus-Elsevier
We report what are to our knowledge the first observation and characterization of quadratic spatial solitons in periodically poled lithium niobate (PPLN). Using an Nd:YAG (1064 nm) source, we observed self-trapped solitary-wave propagation over more
Publikováno v:
IEEE journal of quantum electronics, 35(4), 647-655. IEEE
Thermal lensing in an end-pumped Nd:LiYF/sub 4/ rod, under lasing and nonlasing conditions, has been investigated. Under lasing conditions, a weak thermal lens, with dioptric power varying linearly with pump power, was observed. Under nonlasing condi
Autor:
David Shepherd, H.E. Meissner, W.A. Clarkson, C.L. Bonner, Anne C. Tropper, Christian T. A. Brown, D.C. Hanna
Publikováno v:
Optics Communications. 160:47-50
We report on the design and fabrication of Nd:YAG planar waveguides suitable for in-plane, diode-bar pumping. Contact-bonded Nd:YAG on Sapphire waveguides are shown to have the high numerical aperture (0.46), low propagation loss (
Publikováno v:
Physical Review B (Condensed Matter and Materials Physics), 58(24), 16076-16092. American Institute of Physics
We investigate the influence of interionic upconversion between neighboring ions in the upper laser level of Nd:YLF and Nd:YAG on population dynamics, heat generation, and thermal lensing under lasing and non-lasing conditions. It is shown that casca
Publikováno v:
Optics Communications. 156:49-52
We report efficient cw operation of an intracavity-frequency-doubled Nd:YLF ring laser end-pumped by two beam-shaped 20W diode bars. A single-frequency, polarised output of 6.2W at 526.5nm (8.3W generated in the doubling crystal), was obtained in a T