Chromium-Doped Forsterite Laser Mode-Locking and Its Applications
碩士 === 國立臺灣大學 === 光電工程學研究所 === 87 === In this thesis, we report the construction of a femtosecond chromium-doped forsterite laser. The laser was soliton mode-locked with a semiconductor saturable absorber mirror (SESAM). Ultrashort pulses with pulsewidth much shorter than the response t...
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| Format: | Others |
| Language: | en_US |
| Published: |
1999
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| Online Access: | http://ndltd.ncl.edu.tw/handle/53005117371537459518 |
| Summary: | 碩士 === 國立臺灣大學 === 光電工程學研究所 === 87 === In this thesis, we report the construction of a femtosecond chromium-doped forsterite laser. The laser was soliton mode-locked with a semiconductor saturable absorber mirror (SESAM). Ultrashort pulses with pulsewidth much shorter than the response time of the SESAM were generated. The pulse was shaped by a soliton-like pulse shaping mechanism, i.e., the interplay between self-phase modulation (SPM) and group-velocity dispersion (GVD). The SESAM was used to initialize and stabilize the femtosecond pulse generation.
A preliminary study on the electron lifetime of low-temperature-grown GaAs (LT-GaAs) samples by using the femtosecond Cr4+:forsterite laser is also presented. Both below bandgap and above bandgap excitation were performed. Our measurements indicate that LT-GaAs is a suitable material for high-speed optical communication applications.
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