Dynamic parameters evaluation for femtosecond streak tubes

Degtyareva, Valentina P.; Bryukhnevich, Gennadii I.; Lozovoĭ, V. I.; Schelev, Mikhail Ya.; Semichastnova, Zoya M.; Vorobiev, Nikolai S.

doi:10.1117/12.569964

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…Figure 2 shows that TTS in the cathode-to-mesh and cathode-to-anode regions decreased with increasing accelerating voltage. These results are consistent with Degtyareva et al (2005), who proposed that an increase in electric field strength near the cathode surface can improve the temporal resolution.…”

Section: Results and Analysissupporting

confidence: 92%

Electron accelerating unit for streak image tubes

Zong

Yang

Cai

et al. 2015

Sadhana

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An electron accelerating unit is proposed for use in streak image tubes (SITs). An SIT with this new accelerating unit was simulated using the Monte Carlo method. The simulation results show that the accelerating unit improves both the spatial and temporal resolution. Compared to a traditional SIT, the transit time spread for electrons in the cathode-to-mesh region is reduced from 247 to 162 fs, the line width of the electron beam on the image surface is reduced from 42.7 to 26.1 μm, and the temporal resolution is improved from 515 to 395 fs.

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Section: Results and Analysissupporting

confidence: 92%

Electron accelerating unit for streak image tubes

Zong

Yang

Cai

et al. 2015

Sadhana

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“…The first experimental prototype of the PV-FS femtosecond tube was computer simulated, designed and manufactured in the beginning of 2001 [13,14] . The best experimentally achieved time resolution was close to 160 -200 fs at the streak speed of 5×10 10 cm/s, electric field strength near the input photocathode up to 13 kV/mm, light power density of the input 800-nm laser radiation (1÷5)×10 3 W/cm 2 , and the dynamic detection range no more than 10 [15] .…”

Section: The Ways To Increase the Electric Field Strength Near The Phmentioning

confidence: 99%

Sub-100 fs streak tube: computer-aided design, manufacturing, and testing

et al. 2008

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In the present communication we describe the design of the sub-100 fs streak-tube that may be used for commercial streak cameras manufacturing. Careful attention is paid to preparing of a very smooth input photocathode substrate on which a low surface resistance (1−5 Ohm/ ) photocathode of S-1 type is deposited. Our estimations have shown that the photocathode surface roughness of about tens of nanometers may restrict the ultimate time resolution at the level of 100 fs. This is the reason why the photocathode substrate surface has to be smooth within the units of nanometers. The curvature of the photocathode surface is also very important to compensate the difference in the time-of-flight of electrons emitted from the central and peripheral photocathode areas. Further modernization was conducted with a photocathode -accelerating mesh assembly. The assembly may operate with 2 -3 ns (FWHM) electrical pulses of 12 -15 kV amplitude. In order to improve the S/N ratio in the streaked images, a shuttering system was incorporated inside the tube. As the result, a completely new femtosecond streak tube of PV-FS-M type was designed, manufactured, and tested.

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“…Fig.1 Simplified block-diagram of the versatile ps/ fs streak camera As it was earlier mentioned, the key component of any streak camera is its streak tube. Especially for our versatile cameras the earlier developed PV-FS streak tube [8][9] was modified to be used simultaneously in picosecond and femtosecond time domain. The new PV-FS-M streak tube (see Fig.…”

Section: Introductionmentioning

confidence: 99%

On the way to overcoming the 100 fs time resolution limit in photoelectron imaging

2008

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Numerous steps in designing an experimental prototype of a versatile pico-femtosecond streak camera are overviewed. After creation a sub-100fs streak tube with electrostatic focusing lens our main efforts were concentrated on appropriate pulse circuitries design capable to provide low delay/jitter (10 ns, 10ps) at tens of mW input triggering power level, as well as a wide range of streak speeds varying from 10 8 cm/s to 10 11 cm/s. A special input relay optics with "build-up" time shorter than 100fs was also developed. Sub-10 fs laser palses from Femtosource Synergy oscillator ("FemtoLasers", Austria) was employed for dynamic tests of the created sub-100fs image tubes and cameras.

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Dynamic parameters evaluation for femtosecond streak tubes

Cited by 6 publications

References 5 publications

Electron accelerating unit for streak image tubes

Electron accelerating unit for streak image tubes

Sub-100 fs streak tube: computer-aided design, manufacturing, and testing

On the way to overcoming the 100 fs time resolution limit in photoelectron imaging

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