By Ioachim Pupeza
Enhancement cavities are passive optical resonators within which continuous-wave laser radiation or pulses of a frequency comb are coherently overlapped, making an allowance for an influence and depth scaling of as much as a number of orders of significance. A admired program is the table-top new release of brilliant, laser-like radiation in spectral areas the place direct laser motion is inefficient or no longer on hand in any respect, through intracavity nonlinear optical approaches. besides the fact that, to take advantage of the whole capability of this method additional development is required.
This thesis covers important difficulties of enhancement cavities, corresponding to discovering obstacles in scaling the circulating energy, measuring hollow space parameters with excessive accuracy, tailoring transverse modes and coupling out radiation generated within the hollow space. remarkable intracavity laser powers have been established, surpassing prior effects through an order of value. As an software, harmonics of the elemental 1040-nm radiation as much as the twenty first order are generated. in addition to reporting those wonderful experimental effects, the thesis presents a very good advent into the physics of enhancement cavities, supported through greater than one hundred forty references.
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Extra resources for Power Scaling of Enhancement Cavities for Nonlinear Optics
Example text
The grand goals of the research in the field of high-repetition-rate, passivelyenhanced HHG are pushing the cut-off of the HHG process towards higher energies and scaling up the power and the bandwidth of each harmonic. From the point of view of the enhancement cavity technology, these goals pose analogous challenges as with any other intracavity high-intensity interaction process. Therefore, the objectives formulated in the following can be easily translated to other applications, and the results presented in this thesis have significant implications beyond high-repetitionrate HHG.
Rhodes, Studies of multiphoton production of vacuum-ultraviolet radiation in the rare gases. J. Opt. Soc. Am. B 4, 595 (1987) 45. M. Ferray, A. F. A. Lomprk, G. Mainfray, C. Manus, Multiple-harmonic conversion of 1064 nm radiation in rare gases. J. Phys. B: At. Mol. Opt. Phys. 21, L31–L35 (1988) 46. B. Corkum, Plasma perspective on strong-field multiphoton ionization. Phys. Rev. Lett. 71, 1994 (1993) 47. M. Lewenstein, P. Y. Ivanov, A. B. Corkum, Theory of high-harmonic generation by low-frequency laser fields.
To push the damage threshold of the cavity and enable power scaling these limitations need to be investigated and overcome. One of the major results of this thesis is the investigation of the power scaling of a standard-design bow-tie cavity consisting of commercially available, state-of-the art dielectric mirrors, see Sect. 3. In particular, it was found that power scaling is primarily limited by intensity effects in the cavity mirrors. On the one hand, this insight led to the development of nextgeneration enhancement cavity designs, see Sect.
