Tutorial: Are You Safe at a Laser Light Show?
... The BC20 is able to overcome the deficiencies in using a standard power meter detector. The peak hold detector of the BC20 is able to register pulses as short as 10us, thus making the device suitable for directly measuring the peak power present in the majority of scanned laser show emissions. Once ...
... The BC20 is able to overcome the deficiencies in using a standard power meter detector. The peak hold detector of the BC20 is able to register pulses as short as 10us, thus making the device suitable for directly measuring the peak power present in the majority of scanned laser show emissions. Once ...
Chapter 7 Optical lattices and experiment design
... laser beam’s electric fields must be added as vectors. The resulting total electric field vector can then be used to calculate the intensity, I(r) = ²0 c|E|2 /2; a scalar quantity. The second reason is the polarisation affects the allowed atomic transitions. For example, in Chapter 2 the Q-matrix wa ...
... laser beam’s electric fields must be added as vectors. The resulting total electric field vector can then be used to calculate the intensity, I(r) = ²0 c|E|2 /2; a scalar quantity. The second reason is the polarisation affects the allowed atomic transitions. For example, in Chapter 2 the Q-matrix wa ...
The AC Stark effect - Center for Ultracold Atoms
... b) What is the probability of finding the atom in the excited state Pe = |ae |2 ? Neglect rapidly oscillating terms and time-average the remaining time-dependent terms. c) Rayleigh scattering In this part you will calculate the photon scattering rate. Knowing the scattering rate for a particular ato ...
... b) What is the probability of finding the atom in the excited state Pe = |ae |2 ? Neglect rapidly oscillating terms and time-average the remaining time-dependent terms. c) Rayleigh scattering In this part you will calculate the photon scattering rate. Knowing the scattering rate for a particular ato ...
High Power Operation of a 17 GHz Photocathode RF Gun
... arrival of the laser pulse by 140 µs ± 12 ns. The variation of the delay comes from the spacing between laser pulses. The lamp signal fires at 10 Hz. A divide-by-ten box is used to send the charge/fire command pair to the klystron modulator. This permits the coarse synchronization of the klystron ga ...
... arrival of the laser pulse by 140 µs ± 12 ns. The variation of the delay comes from the spacing between laser pulses. The lamp signal fires at 10 Hz. A divide-by-ten box is used to send the charge/fire command pair to the klystron modulator. This permits the coarse synchronization of the klystron ga ...
Trapping and destruction of long range high intensity optical/plasma
... Introduction to Filamentation • High power, femtosecond laser beams that propagate through air form extremely long filaments due to nonlinear self-focusing ((3)) dynamically balanced by ionization and defocusing. ...
... Introduction to Filamentation • High power, femtosecond laser beams that propagate through air form extremely long filaments due to nonlinear self-focusing ((3)) dynamically balanced by ionization and defocusing. ...
Laser microfabrication of alumina
... However, they are very difficult to fabricate for MEMS devices due to the difficulty in machining these nanocomposites. Alumina-silicon carbide nanocomposites sintered by a pressureless-sintering process have been fabricated using state-of-theart laser microfabrication technology to find a way out o ...
... However, they are very difficult to fabricate for MEMS devices due to the difficulty in machining these nanocomposites. Alumina-silicon carbide nanocomposites sintered by a pressureless-sintering process have been fabricated using state-of-theart laser microfabrication technology to find a way out o ...
Solid-state laser system for laser cooling of Sodium - ENS-phys
... Our experimental setup is represented in Fig. 1. The pump laser sources at 1064 nm and 1319 nm are nonplanar ring oscillator YAG lasers (Innolight GmbH, Germany) with an instantaneous spectral linewidth narrower than 10 kHz and output power of 1.1 W and 500 mW, respectively. Both lasers are collimat ...
... Our experimental setup is represented in Fig. 1. The pump laser sources at 1064 nm and 1319 nm are nonplanar ring oscillator YAG lasers (Innolight GmbH, Germany) with an instantaneous spectral linewidth narrower than 10 kHz and output power of 1.1 W and 500 mW, respectively. Both lasers are collimat ...
A strong hybrid couple
... atom, the two studies exploited a scheme proposed for optical quantum computation4. To understand this scheme, consider a spring fixed at either end. Just as the spring carries vibrations of only certain frequencies, an optical cavity in which the mirrors are separated by a fixed distance allows lig ...
... atom, the two studies exploited a scheme proposed for optical quantum computation4. To understand this scheme, consider a spring fixed at either end. Just as the spring carries vibrations of only certain frequencies, an optical cavity in which the mirrors are separated by a fixed distance allows lig ...
en_20160128_lzh_pm_hymnos_final
... fiber amplifiers“, the scientists will be working on increasing the laser power of continuous and pulsed systems for the next three years. Presently, the maximum usable output power of high power fiber systems is limited by the so-called transverse mode instability (TMI). Here, the laser beam profil ...
... fiber amplifiers“, the scientists will be working on increasing the laser power of continuous and pulsed systems for the next three years. Presently, the maximum usable output power of high power fiber systems is limited by the so-called transverse mode instability (TMI). Here, the laser beam profil ...
How laser works
... transitory, lasting only about one-millionth of a second. A small pulse of laser light "tuned" to the excited electrons' energy is directed through the glass slabs. This laser pulse stimulates the electrons to drop to their lower energy states, or "ground" states, and emit a laser photon of exactly ...
... transitory, lasting only about one-millionth of a second. A small pulse of laser light "tuned" to the excited electrons' energy is directed through the glass slabs. This laser pulse stimulates the electrons to drop to their lower energy states, or "ground" states, and emit a laser photon of exactly ...
Efficient yellow-green light generation at 561 nm by frequency
... excite phycoerythrin and its tandem, as well as red fluorescent proteins such as mCherry, mStrawberry, DsRed, and dTomato. Recently, such lasers have also attracted attention for their application in interferometry [9] and spectroscopy [10]. Since the yellow region of the optical spectrum, where a r ...
... excite phycoerythrin and its tandem, as well as red fluorescent proteins such as mCherry, mStrawberry, DsRed, and dTomato. Recently, such lasers have also attracted attention for their application in interferometry [9] and spectroscopy [10]. Since the yellow region of the optical spectrum, where a r ...
Mode-locking
Mode-locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12 s) or femtoseconds (10−15 s).The basis of the technique is to induce a fixed-phase relationship between the longitudinal modes of the laser's resonant cavity. The laser is then said to be 'phase-locked' or 'mode-locked'. Interference between these modes causes the laser light to be produced as a train of pulses. Depending on the properties of the laser, these pulses may be of extremely brief duration, as short as a few femtoseconds.