All-solid-state high-peak-power Ti:sapphire laser system above 5-kHz repetition rate

Nabekawa, Yasuo; Togashi, Tadashi; Sekikawa, Taro; Watanabe, S.; Konno, Susumu; Kojima, Toshiharu; Fujikawa, Shuichi; Yasui, Koji

doi:10.1007/s003400000312

Cited by 40 publications

(8 citation statements)

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“…This is mainly due to the refractive index change of the laser crystal with the temperature gradient, resulting in the thermal focusing power, defined as a reciprocal of the focal length of the thermal lens f th , to be shown as [38] …”

Section: Thermal Managementmentioning

confidence: 99%

Multi-terawatt laser system generating 12-fs pulses at 100 Hz repetition rate

et al. 2010

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We have developed a laser system generating high peak-power ultrashort pulses based on the chirped pulse amplification of a Ti:sapphire laser. The pulse duration of the laser is reduced to 12 fs, owing to the successful compensation of gain narrowing during amplification with novel optics. The pulse energy and the repetition rate are 40 mJ and 100 Hz, respectively, as a consequence of sufficient energy extraction from a laser medium in the final stage of a multipass amplifier chain, which is designed to balance focusing with a thermal lens against defocusing with convex mirrors without cryogenic cooling for Ti:sapphire crystals. The laser pulses delivered from this laser system are suitable for generating an intense attosecond pulse train in a vacuum ultraviolet or extreme ultraviolet region.

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Section: Thermal Managementmentioning

confidence: 99%

Multi-terawatt laser system generating 12-fs pulses at 100 Hz repetition rate

et al. 2010

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“…High-power femtosecond laser systems providing W10 W of average power have already been demonstrated using Ti:sapphire as the gain medium [149][150][151], and these techniques can be readily extended to the 40 W range. The critical components for the laser system are the front-end (oscillator and regenerative preamplifier) and the high-power pump lasers, which are commercial products available from Coherent Inc. (oscillator and pump lasers) and from PositiveLight (pre-amplifier).…”

Section: System Overviewmentioning

confidence: 99%

Proposal to DOE Basic Energy Sciences: Ultrafast X-ray science facility at the Advanced Light Source

Schoenlein¹,

Falcone²,

Alivisatos³

et al. 2001

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“…High-power, high repetition rate Ti:sapphire lasers have been developed in the central gain region around 800 nm [8,9,10]. However the Ti:sapphire laser with an output above 10 W, a repetition rate of 6 kHz, and single mode at the edge wavelength have not yet been developed, to our knowledge.…”

Section: Introductionmentioning

confidence: 98%

Development of high coherence, 200mW, 193nm solid-state laser at 6 kHz

Nakazato

Tsuboi

Onose³

et al. 2015

SPIE Proceedings

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The high coherent, high power 193-nm ArF lasers are useful for interference lithography and microprosessing applications. In order to achieve high coherence ArF lasers, we have been developing a high coherence 193 nm solid state laser for the seeding to a high power ArF laser. We used the sum frequency mixing of the fourth harmonic (FH) of a 904-nm Ti:sapphire laser with a Nd:YVO 4 laser (1342 nm) to generate 193-nm light. The laser system consists of a single-mode Ti:sapphire oscillator seeded by a 904-nm external cavity laser diode, a Pockels cell, a 6-pass amplifier, a 4-pass amplifier, a 2-pass amplifier and a wavelength conversion stage. The required repetition rate of 6 kHz corresponding to the ArF laser, along with a low gain at 904 nm induces serious thermal lens effects; extremely short focal lengths of the order of cm and bi-foci in the vertical and horizontal directions. From the analysis of thermal lens depending on pump intensity, we successfully compensated the thermal lens by dividing a 527-nm pump power with 15, 25 and 28 W to 3-stage amplifiers with even passes, resulting in the output power above 10W with a nearly diffraction limited beam. This 904-nm output was converted to 3.8 W in the second harmonic by LBO, 0.5 W in FH by BBO sequentially. Finally the output power of 230 mW was obtained at 193 nm by mixing the FH with a 1342-nm light in CLBO.

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All-solid-state high-peak-power Ti:sapphire laser system above 5-kHz repetition rate

Cited by 40 publications

References 0 publications

Multi-terawatt laser system generating 12-fs pulses at 100 Hz repetition rate

Multi-terawatt laser system generating 12-fs pulses at 100 Hz repetition rate

Proposal to DOE Basic Energy Sciences: Ultrafast X-ray science facility at the Advanced Light Source

Development of high coherence, 200mW, 193nm solid-state laser at 6 kHz

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