Electro-optic measurement of terahertz pulse energy distribution

2009 ◽  
Vol 80 (11) ◽  
pp. 113103 ◽  
Author(s):  
J. H. Sun ◽  
J. G. Gallacher ◽  
G. J. H. Brussaard ◽  
N. Lemos ◽  
R. Issac ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Pulse Energy ◽  
Terahertz Pulse ◽  
Electro Optic

scholarly journals Super-giant pulses from the Crab pulsar: energy distribution and occurrence rate

2019 ◽  
Vol 490 (1) ◽  
pp. L12-L16 ◽  
Author(s):  
Apurba Bera ◽  
Jayaram N Chengalur
Keyword(s):  
Energy Distribution ◽  
Power Law ◽  
Pulse Energy ◽  
Occurrence Rate ◽  
Crab Pulsar ◽  
Limited Sample ◽  
Pulse Emission ◽  
High Fluences ◽  
Giant Pulses ◽  
Power Law Index

ABSTRACT We present statistical analysis of a fluence-limited sample of over 1100 giant pulses from the Crab pulsar, with fluence > 130 Jy ms at ∼1330 MHz. These were detected in ∼260 h of observation with the National Centre for Radio Astrophysics (NCRA) 15 m radio telescope. We find that the pulse-energy distribution follows a power law with index $\rm \alpha \approx -3$ at least up to a fluence of ∼5 Jy s. The power-law index agrees well with that found for lower-energy pulses in the range 3–30 Jy ms. The fluence distribution of the Crab pulsar hence appears to follow a single power law over ∼3 orders of magnitude in fluence. We do not see any evidence for the flattening at high fluences reported by earlier studies. We also find that, at these fluence levels, the rate of giant-pulse emission varies by as much as a factor of ∼5 on time-scales of a few days, although the power-law index of the pulse-energy distribution remains unchanged. The slope of the fluence distribution for Crab giant pulses is similar to that recently determined for the repeating FRB 121102. We also find an anti-correlation between the pulse fluence and the pulse width, so that more energetic pulses are preferentially shorter.

Electro-optic time lensing with an intense single-cycle terahertz pulse

2010 ◽  
Vol 81 (5) ◽  
Author(s):  
Yuzhen Shen ◽  
G. L. Carr ◽  
James B. Murphy ◽  
Thomas Y. Tsang ◽  
Xijie Wang ◽  
...  
Keyword(s):  
Terahertz Pulse ◽  
Single Cycle ◽  
Electro Optic

Single-shot terahertz pulse characterization via two-dimensional electro-optic imaging with dual echelons

2007 ◽  
Vol 32 (14) ◽  
pp. 1968 ◽  
Author(s):  
K. Y. Kim ◽  
B. Yellampalle ◽  
A. J. Taylor ◽  
G. Rodriguez ◽  
J. H. Glownia
Keyword(s):  
Single Shot ◽  
Two Dimensional ◽  
Terahertz Pulse ◽  
Electro Optic ◽  
Pulse Characterization

scholarly journals Pulsed LD side-pumped MgO: LN electro-optic cavity-dumped 1123 nm Nd: YAG laser with short pulse width and high peak power

2018 ◽  
Vol 6 ◽  
Author(s):  
Yang Bai ◽  
Bing Bai ◽  
Diao Li ◽  
Yanxiao Sun ◽  
Jianlin Li ◽  
...  
Keyword(s):  
Pulse Energy ◽  
Repetition Rate ◽  
Pulse Width ◽  
Peak Power ◽  
Optimization Design ◽  
Short Pulse ◽  
High Peak ◽  
High Peak Power ◽  
Electro Optic ◽  
Energy Pulse

We report a cavity-dumped 1123 nm laser with narrow pulse width and high peak power by an MgO: LN crystal electro-optic (EO) modulator. Based on the structural optimization design of a folded biconcave cavity using the 808 nm pulsed laser diode (LD) side-pumped ceramic Nd: YAG rod, output pulses with maximum pulse energy and peak power up to 39.6 mJ and 9.73 MW were obtained, corresponding to 100 Hz repetition rate and 4.07 ns pulse width. The instabilities of pulse width and pulse energy were $\pm$1.55% and $\pm$2.06%, respectively. At the highest repetition rate of 1 kHz, the pulse energy, pulse width, and peak power were 11.3 mJ, 5.05 ns, and 2.24 MW, respectively. The instabilities of pulse width and pulse energy were $\pm$2.65% and $\pm$3.47%, respectively.

scholarly journals Simulation study on cascaded terahertz pulse generation in electro-optic crystals

2007 ◽  
Vol 15 (13) ◽  
pp. 8076 ◽  
Author(s):  
Toshiaki Hattori ◽  
Kousuke Takeuchi
Keyword(s):  
Simulation Study ◽  
Pulse Generation ◽  
Terahertz Pulse ◽  
Electro Optic

scholarly journals Theoretical study of pre-formed hole geometries on femtosecond pulse energy distribution in laser drilling

2015 ◽  
Vol 23 (4) ◽  
pp. 4927 ◽  
Author(s):  
L. S. Jiao ◽  
E.Y.K. Ng ◽  
H. Y. Zheng ◽  
Y. L. Zhang
Keyword(s):  
Energy Distribution ◽  
Pulse Energy ◽  
Femtosecond Pulse ◽  
Theoretical Study ◽  
Laser Drilling
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