Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Frank Kallmeyer"'
Autor:
Jian Chen, Jianhong Ge, Thomas Riesbeck, Sha Wang, Hans Joachim Eichler, Frank Kallmeyer, Xin Wang
Publikováno v:
Applied Physics B. 95:721-730
Diode lasers with peak powers in the kW range and pulse durations of micro- to milli-seconds have been available since several years. Pumping solid state lasers with such sources yield high output pulse energies in spiking or Q-switched operation. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bfe6010baa0d36f94a73b23dee21a38
https://doi.org/10.1007/s00340-009-3479-y
https://doi.org/10.1007/s00340-009-3479-y
Publikováno v:
Applied Physics B. 92:43-48
The laser resonator structure and beam diameter change with the pump power due to the thermal lens effect. This influences the output power. With increasing pump power, the output power sharply decreases when the cavity becomes unstable. In order to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3322bbd82344d59dcbc08ea63ebe941d
https://doi.org/10.1007/s00340-008-3052-0
https://doi.org/10.1007/s00340-008-3052-0
Autor:
Frank Kallmeyer, C. Czeranowsky, Xin Wang, Hans Joachim Eichler, Günter Huber, B. Ileri, Klaus Petermann, Marcus Dziedzina
Publikováno v:
Applied Physics B. 89:305-310
Laser activity of neodymium-doped gadolinium scandium aluminum garnet (Nd:GSAG) on the \(^{4}F_{3/2}\rightarrow^{4}I_{9/2}\) transition with an output wavelength around 943 nm was investigated. The emission cross-section was measured with spectroscop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d4ce44b260b2ee9046d08375ebb1d23
https://doi.org/10.1007/s00340-007-2797-1
https://doi.org/10.1007/s00340-007-2797-1
Autor:
Sven Krüger, Gunther Wernicke, Frank Kallmeyer, Hartmut Gruber, Daniel Kayser, Wolfgang Osten
Publikováno v:
tm - Technisches Messen. 70:66-70
Das Erkennen und Klassifizieren von Fehlern ist eine wichtige Aufgabe der optischen zerstörungsfreien Materialprüfung in der industriellen Qualitätskontrolle. Eine Vielzahl von Daten über Fehler im Material sind in interferometrischen Streifenmus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0d9f97e3045f4258e10e4a7832919d8
https://doi.org/10.1524/teme.70.2.66.20110
https://doi.org/10.1524/teme.70.2.66.20110
Autor:
Zhiyi Wei, Yongdong Zhang, Changwen Xu, Dehua Li, Xingli Wang, H. J. Eichler, Chunqing Gao, A. Ding, Sha Wang, Zhiguo Zhang, Frank Kallmeyer, Chunyu Zhang
Publikováno v:
2009 Conference on Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics.
Stable mode-locking laser pulse at 942nm by diode-pumped Nd:GSAG laser has been demonstrated for the first time. We obtained 8.7 ps pulses at repetition rate of 95.6 MHz and average output power of 220 mW.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::420d86b24fd96b5cca528910f00e5d28
https://doi.org/10.1109/cleopr.2009.5292310
https://doi.org/10.1109/cleopr.2009.5292310
Publikováno v:
SPIE Proceedings.
An actively Q-switched Nd:GSAG laser with 942nm wavelength was frequency doubled in a critically type-I phase-matched LBO. Maximum pulse energy of 8mJ with 300ns pulse duration at 471 nm was obtained with 19mJ incident radiation at 10Hz. The correspo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a866919e241b36bff0bf1dd803237d5
https://doi.org/10.1117/12.823007
https://doi.org/10.1117/12.823007
Publikováno v:
SPIE Proceedings.
A Nd:GSAG laser operated at the 4 F 3 / 2 4 I 9 / 2 transition was tuned by a FPI-etalon achieving a tuning range of1.5nm with a center wavelength at 942.7nm. Three water vapor absorption wavelengths with dierent absorptionstrength as suitable for a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1b5887d0e5bbd18ef89bd11ce30f7f7
https://doi.org/10.1117/12.816696
https://doi.org/10.1117/12.816696
Publikováno v:
Advanced Solid-State Photonics.
A Nd:GSAG laser end-pumped by pulsed laser diodes is presented. A maximum output energy of 160mJ at 10Hz repetition rate was obtained in free-running mode. In Q-switched mode an output energy of 31mJ was achieved.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::125a29b465f64f1d082a9b60a01e0dfb
https://doi.org/10.1364/assp.2008.wb8
https://doi.org/10.1364/assp.2008.wb8
Publikováno v:
SPIE Proceedings.
The wavelength-dependent Jones matrix representation of a twisted-nematic liquid crystal (TN-LC) cell contains four independent parameters. The absolute values of these parameters and two mutual sign relationships can be determined from comparatively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1a5d5db67ed71edf7fa5dace32a9195
https://doi.org/10.1117/12.722895
https://doi.org/10.1117/12.722895
Autor:
Marcus Dziedzina, Reiner Treichel, Frank Kallmeyer, Hans-Joachim Eichler, Daniel Schmidt, Susanne Nikolov
Publikováno v:
SPIE Proceedings.
For weather forecast, especially for civil protection from high-impact weather events, measuring the three-dimensional distribution of water vapour by DIAL techniques is a fundamental concern. Especially for development and evaluation of atmospheric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::785ff7f6d48716517ee3b2fc492830bd
https://doi.org/10.1117/12.700159
https://doi.org/10.1117/12.700159