Abstract
A gain-switched quantum cascade (QC) laser is developed to generate pulses with less than 200 psec duration at 8 μm. Gain switching is a technique for the generation of picosecond light pulses from injection layers, which relies on the rapid depletion of the gain-medium population inversion following a short-lived electrical excitation. The QC laser is gain-switched with a commercial `comb' generator consisting of a step recovery diode and filtering reactive elements. When driven at half a watt of radio frequency power, this device generates a train of short negative electrical pulses, each with a duration of approximately 140 psec, and an amplitude of more than 20 V across a 50 Ω load; the repetition rate is set by a 100 MHz driving frequency.
Original language | English (US) |
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Pages (from-to) | 11-12 |
Number of pages | 2 |
Journal | Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS |
Volume | 1 |
State | Published - 1999 |
Externally published | Yes |
Event | Proceedings of the 1999 12th Annual Meeting IEEE Lasers and Electro-Optics Society (LEOS'99) - San Francisco, CA, USA Duration: Nov 8 1999 → Nov 11 1999 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering