ISSN:
1432-0649
Keywords:
PACS: 42.15.Eq; 42.25.Bs; 42.40Pa; 42.60.Da; 42.65.k; 42.79Bh; 42.90.V
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract. Chirped dielectric laser mirrors have been known for years as useful devices for broadband feedback and dispersion control in femtosecond pulse lasers. First we present a novel design technique referred to as frequency domain synthesis of chirped mirrors. These mirrors exhibit high reflectivity and nearly constant group delay over 150 THz supporting generation of sub-5-fs pulses in the visible. Afterwards, multi-cavity thin-film Gires–Tournois interferometers are introduced for the first time as an alternative approach to realize “negative dispersion mirrors”. These novel dielectric high reflectors exhibit reflectivities R〉99.97% and a negative group delay dispersion of −50±1 fs2 over a bandwidth of 56 THz. Dispersive properties originate from coupled resonances in multiple λ/2 cavities embedded in the layer structure. The general structure and performance of multi-cavity Gires–Tournois interferometers are compared to that of chirped dielectic mirrors and their distinct applications are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003400000303
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