# Picosecond Laser Pulse Measurement

### The pulses studied were found to have a full width at half power of between 4 and 6 picoseconds.

Picosecond laser pulse measurement.

Picosecond lasers have been used in many applications and on many materials. As the first stage of pulse width measurement, however, we examined a pulse width measurement technique in the picosecond range by using Repetition rate of this laser is about 82.6 mhz, or the seventh harmonic of the fel micropulse repetition rate.

Figure 12 provides three examples of different pulse width that were obtained from one picosecond fiber laser. The technique is capable of measuring pulse widths. Recent developments in picosecond laser pulse generation and sub—picosecond measurement with electron—optical streak camera chronography are reviewed.

The intensity of the two pulses was uncorrelated. Tion, with a repetition rate of 11.8 mhz. Rasti, in laser surface engineering, 2015 18.4 picosecond pulsed surface texturing.

Picosecond pulse measurements using the active laser medium full record The second pulse had average energy of 874 $$\mu$$ j with fluctuations of 16%. If that number is ~1w^2, a simple photodiode will do.

The pulse duration is determined by the ratio of the conversion efficiencies of the second harmonic emission generated by the picosecond pulses and by the. The pulses studied were found to have a full width at half power of between 4 and 6 picoseconds. The second stage amplfies the laser pulse from tens of mj to hundreds of mj in a 1 atm, tea co 2 laser where field broadening is the dominant mechanism to sustain the picosecond bandwidth.

We modified such a dispersoscope for measurement of sub picosecond pulses of an yb:yag renerative amplifier generating at wavelength of 1030nm. The technique is capable of measuring pulse widths at least as short as 4 × 10. We demonstrate a simple practical technique for the measurement of the duration of picosecond semiconductor laser pulses using the internally generated second harmonic emission accompanying the laser output.

### 진성레이저

Source : pinterest.com