Building a Pulse Detector using the Frequency Resolved Optical Gating Technique
We show how to construct a diagnostic optical layout known as Frequency Resolved Optical Gating (FROG) for an ir mode-locked laser by using the nonlinear effect known as second harmonic generation (SHG). In this paper, we explain the principle of operation and the theory upon which this diagnostic is based. Moreover, we described the procedure used to measure the duration and frequency components of a pulse. This process consists of calibrating the scales of a two-dimensional image, time delay vs. frequency, known as FROG spectrogram or FROG trace. This calibration of the time delay scale yields the correspondence between a pixel and time delay. Similarly, the calibration of the frequency scale yields the correspondence between a pixel, and frequency.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 826729
- Report Number(s):
- SLAC-PUB-9399; TRN: US200427%%689
- Resource Relation:
- Other Information: PBD: 5 Feb 2004
- Country of Publication:
- United States
- Language:
- English
Similar Records
Using phase retrieval to measure the intensity and phase of ultrashort pulses: Frequency-resolved optical gating
Frequency-resolved optical gating with the use of second-harmonic generation