Chirped amplitude modulation ladar for range and
... A block diagram of ARL’s chirped AM ladar architecture using an image tube as a receiver is shown in Figure 1. The principle of operation is briefly summarized here but is presented in detail elsewhere. 2 The first stage of the transmitter is a chirp generator that produces a microwave signal whose ...
... A block diagram of ARL’s chirped AM ladar architecture using an image tube as a receiver is shown in Figure 1. The principle of operation is briefly summarized here but is presented in detail elsewhere. 2 The first stage of the transmitter is a chirp generator that produces a microwave signal whose ...
Optical Damage Limits to Pulse Energy From Fibers - AS
... process via cross-phase modulation, which is twice as strong as self-phase modulation. The Stokes wave can also sweep energy out of the pump pulse leading to shorter, more intense pulses with peak irradiance well in excess of the peak irradiance of the pump. Which of these effects contributes most t ...
... process via cross-phase modulation, which is twice as strong as self-phase modulation. The Stokes wave can also sweep energy out of the pump pulse leading to shorter, more intense pulses with peak irradiance well in excess of the peak irradiance of the pump. Which of these effects contributes most t ...
Construction of a Calcium Matter-Wave Interferometer
... atom [18], measuring the local acceleration g due to gravity [19, 20], measuring the Earth’s gravity gradient [13, 15], making precision rotation measurements [12, 14, 21, 22], measuring the electric polarizability of atoms [23], and measuring time variance in the fine structure constant [24–28]. ...
... atom [18], measuring the local acceleration g due to gravity [19, 20], measuring the Earth’s gravity gradient [13, 15], making precision rotation measurements [12, 14, 21, 22], measuring the electric polarizability of atoms [23], and measuring time variance in the fine structure constant [24–28]. ...
Optics and Quantum Electronics - Research Laboratory of Electronics
... mirrors developed in our group, provide high reflectivity and well controlled dispersion over 400 nm in the case of single mirrors or even over one octave using specially matched mirror pairs. These components are a prerequisite for miniaturized ultrabroadband femtosecond lasers necessary for biomed ...
... mirrors developed in our group, provide high reflectivity and well controlled dispersion over 400 nm in the case of single mirrors or even over one octave using specially matched mirror pairs. These components are a prerequisite for miniaturized ultrabroadband femtosecond lasers necessary for biomed ...
EXPERIMENT 06 Helium Neon Laser
... Due to the spontaneous emission photons are generated which will be amplified by the inverted medium and reflected back from the mirrors undergoing a large number of passes through the amplifying medium. If the gain compensates for the losses, a standing laser wave will be built up inside the optica ...
... Due to the spontaneous emission photons are generated which will be amplified by the inverted medium and reflected back from the mirrors undergoing a large number of passes through the amplifying medium. If the gain compensates for the losses, a standing laser wave will be built up inside the optica ...
Rate equation model of bulk optical damage of silica - AS
... damage measurements we must to use conditions that avoid SBS. This requires focal sizes of 15 µm or less. III. Experimental results and discussion. 1. Laser induced damage threshold in bulk fused silica for seeded nanosecond laser We used 1” focal length best form lens and by measuring the surface t ...
... damage measurements we must to use conditions that avoid SBS. This requires focal sizes of 15 µm or less. III. Experimental results and discussion. 1. Laser induced damage threshold in bulk fused silica for seeded nanosecond laser We used 1” focal length best form lens and by measuring the surface t ...
Experimental approach to transverse wave
... cavity eigenfrequencies also depend linearly on this voltage. The voltage was changed in 1 V steps in order to study the behavior of the spatial patterns with detuning. Recording time was about 1 min to avoid the possible detuning shift due to the drift of the active resonator. An example of the soo ...
... cavity eigenfrequencies also depend linearly on this voltage. The voltage was changed in 1 V steps in order to study the behavior of the spatial patterns with detuning. Recording time was about 1 min to avoid the possible detuning shift due to the drift of the active resonator. An example of the soo ...
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.