[permalink] [id link]
Then the signal beam first passes through the center for maximal amplification, but in later passes the diameter is increased to stay below the damage-threshold, to avoid amplification the outer parts of the beam, thus increasing beam quality and cutting off some amplified spontaneous emission and to completely deplete the inversion in the gain medium.
from
Wikipedia
Some Related Sentences
Then and signal
Then the output signal is offset so the pressure sensor reads close to zero when measuring atmospheric pressure.
Then, the single-sideband complex signal centered at zero is upconverted to a real signal, by another pair of quadrature mixers, to the desired center frequency.
Then a tunable local oscillator and mixer converts that signal to a second much lower intermediate frequency where the selectivity of the receiver is accomplished.
Then, the original signal can be reconstructed by a suitable integration over all the resulting frequency components.
Then the hunt began by the men advancing together toward the buffalo, but no one could kill any buffalo until the warriors of the tribe gave the signal.
Then, by simply placing a carbon microphone in the transmission line, the strength of the signal could be varied in order to add sounds to the transmission — in other words, amplitude modulation would be used to impress audio on the radio frequency carrier wave.
Then they waited for the signal to either peak or disappear as the antenna briefly pointed in their direction.
Then, when the signal to proceed is given, bands begin to play the traditional Toc de Castells music as a hush comes over spectators of the event.
Then, the serum to be tested is applied in the primary antibody incubation step ; free antibody is washed away, and a secondary anti-human antibody linked to an enzyme signal is added.
Then the signal is either sampled or processed by the four-quadrant multiplier which produces the complex envelope components ( I, Q ) through multiplying it by the heterodyne frequency.
Then the counter espionage agents simply use the signal to indicate that the dead drop is ready for pickup.
Then Tutela gave the convened signal to the Romans brandishing an ignited branch after climbing on the wild fig ( caprificus ) and hiding the fire with her mantle.
Then they go to the launch site, attempting to transmit a signal in the satellite for Decepticon drones to approach them.
Then he went to the top of the ridge, and turning his back to the Spanish fire, began to signal to the Dolphin.
Then the watermarked digital signal is transmitted or stored, usually transmitted to another person.
Then we use the fractional Fourier transform again to rotate the signal back and we can get the desired signal.
: Then he took the pit signal board and put it out on the track, so that my natural line past the pits took me between it and the timekeeper's hut.
Then and beam
Then, either the surface or thin layer is exposed to the laser beam along a predetermined pattern to ablate desired portions.
Then this beam of light disappeared again into the dark abyss into which it was bound inevitably to disappear.
Then, the missile is launched and at some point after launch is “ gathered ” by the radar or laser beam when it flies into it.
Then, Lance, assuming this was another attempt by Ed to finish him off, puts up his arms and shoots out a beam that sends Ed flying through a brick wall.
Then, when Mizorogi is defeated, he deleted the data of the Ultraman to render the destructive beam useless.
Then and first
Then I plan my attack: the parts I will finish first, the range of values, the accenting of minor details -- all in all, mechanics of producing the finished job with a maximum of crispness.
Then in 1875, apparently in response to the nationalizing influence of the Civil War, Congress first gave the lower federal courts general authority -- concurrently with state tribunals -- to decide cases involving federal-right questions.
Then comes the time when the last wire is removed and Susie walks out a healthier and more attractive girl than when she first went to the orthodontist.
Then, six weeks after the day Kitti first came into the office, Stanley announced he and Kitti were married.
Then the skiff hove into sight, just a dot of light at first against the roiling blackness and crimson streaks of the Coal Sack.
Then, taking in on the first cable as the boat is motored into the wind and letting slack while drifting back, a second anchor is set approximately a half-scope away from the first on a line perpendicular to the wind.
Then, in probably the most interesting part of the hymn, Enheduanna herself steps forward in the first person to recite her own past glories, establishing her credibility, and explaining her present plight.
Then, p < sup > 2 </ sup > is the fraction of the population homozygous for the first allele, 2pq is the fraction of heterozygotes, and q < sup > 2 </ sup > is the fraction homozygous for the alternative allele.
Then he came, in his words, to " the theory of symmetry: all governments and regimes to a first approximation are bad, all peoples are oppressed, and all are threatened by common dangers.
Then, he tied for first with Alexander Alekhine at St. Petersburg 1913 / 14 ( the eighth All-Russian Masters ' Tournament ).
Then Wollheim changed everything when he brought out an unauthorized paperback edition of J. R. R. Tolkien's The Lord of the Rings in three volumes — the first mass-market paperback edition of Tolkien's epic.
Then, somewhat later that same month, there was a meeting in Washington where the possible importance of the newly discovered phenomenon of fission was first discussed in semi-jocular earnest as a possible source of nuclear power.
Then since the first bit of a non-zero binary significand is always 1 it need not be stored, giving an extra bit of precision.
Then he went to hear a Pythagorean philosopher, who demanded that he first learn music, astronomy and geometry, which he did not wish to do.
This melding of scientific and social speculation is clearly present in the novel Voyage from Yesteryear ( strongly influenced by Eric Frank Russell's famous story " And Then There Were None ") about a high-tech anarchist society in the Alpha Centauri system, a starship sent from Earth by a dictatorial government, and the events following their first contact.
1.085 seconds.