laser frequency sentence in Hindi
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- If the laser frequency drops, it will move further away from resonance and the error signal will decrease.
- Due to photodiode noise, the laser frequency can be swept across the transition and the photodiode reading averaged over many sweeps.
- Starting with a laser frequency well below the resonant frequency, photons from any one laser pass right through the majority of atoms.
- This means that if the laser frequency increases ( e . g . due to thermal drift ) it will come closer to resonance with the cavity.
- We need to measure the phase of the reflected beam, as this will tell us whether our laser frequency is higher or lower than the the cavities.
- Using megawatt powered free electron or solid state lasers in combination with adaptive mirrors approximately wide and a photovoltaic array on the climber tuned to the laser frequency for efficiency.
- Furthermore, nonlinearity of the oscillating cloud would produce both spatial and temporal harmonics, so nuclear transitions of higher multipolarity could also be driven at multiples of the laser frequency.
- Thus, as the laser frequency is swept across the resonance, a small dip in the absorption feature will be observed at each atomic transition ( generally hyperfine resonances ).
- An ideal locking signal would be 1 when the laser frequency is too low ( and thus would drive the frequency higher until it reached resonance ) and-1 when laser frequency is too high.
- An ideal locking signal would be 1 when the laser frequency is too low ( and thus would drive the frequency higher until it reached resonance ) and-1 when laser frequency is too high.
- Although insensitive to low frequency mirror drift, laser frequency variation, reflectivity imbalance between the arms, and thermally induced birefringence, this configuration is nevertheless sensitive to passing gravitational waves at frequencies of astronomical interest.
- The knowledge allows the research team to control this process by changing the laser-pulse bandwidth or by chirping the pulse that is, increasing or decreasing the laser frequency with time during the pulse.
- Here { m _ e } is the electron mass, { e } is the electron charge, { c } is the speed of light and { \ omega _ 0 } is the laser frequency.
- The PDH technique responds to the frequency of laser emission independently of intensity, which is significant because many other methods that control laser frequency, such as a side-of-fringe lock are also affected by intensity instabilities.
- Hopefully some tweaking of the laser frequency and power could produce a mark that noticeably changes the colour of the cucumber skin ( ideally bleaches it white ) without really damaging the skin ( affecting its shelf life and customer acceptability ).
- Although visible and infrared frequencies were still too high to be directly measured, it was possible to construct a " chain " of laser frequencies that, by suitable multiplication, differ from each other by only a directly measurable frequency in the microwave region.
- Where \ Gamma is the natural line width of the excited state, \ mu is the electric dipole coupling, \ omega _ o is the frequency of the transition, and \ delta is the defining or difference between the laser frequency and the transition frequency.
- It was the quest of Baird and his colleagues to improve the accuracy of the speed of light which ultimately provided the solid foundation for redefining the International Meter in 1982 and their skilled pioneering work in laser frequency stabilization and measurement which resulted in the following achievements:
- ESPRESSO will benefit not only from the much larger combined light-collecting capacity of the four 8.2-metre VLT Unit Telescopes, but also from improvements in the stability and calibration accuracy that are now possible ( for example, laser frequency comb technology ).
- For the most precise work in mass metrology, " "'g " "'is measured using dropping-mass absolute gravimeters that contain an iodine-stabilized helium neon laser frequency-sweep output from the interferometer is measured with a rubidium atomic clock.
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