Tunable cyclotron-resonance laser in germanium

Journal Article · Mon May 07 04:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.2277· OSTI ID:6876881

Unterrainer, K; Kremser, C ^[1]; Gornik, E ^[2]; Pidgeon, C R ^[3]; Ivanov, Y L ^[4]; Haller, E E ^[5]

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1. Institut fuer Experimentalphysik, Universitaet Innsbruck, A-6020 Innsbruck, Austria (AT)
2. Walter-Schottky-Institut, Technische Universitaet Muenchen, D-8046 Garching (Germany)
3. Heriot Watt University, Edinburgh (Scotland)
4. A. F. Ioffe Institute, Leningrad (USSR)
5. Lawrence Berkeley Laboratories, Berkeley, CA (USA)

We report strong narrow-band {ital stimulated} far-infrared {ital cyclotron}-{ital resonance} emission from the light holes in germanium in crossed electric and magnetic fields. The emission spectrum consists of a single line which is linearly tunable with magnetic field. The {ital gain} of the cyclotron-resonance laser is determined to be 0.05{plus minus}0.02 cm{sup {minus}1}. For the first time we have identified the {ital lasing} {ital transition} to be the {ital n}=2 to {ital n}=1 Landau-level transition of the {ital b}-set light holes by a comparison of absorption and emission spectra with calculations of the band structure including nonparabolicity corrections.

• OSTI ID: 6876881
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:19; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFICATION
CROSSED FIELDS
CYCLOTRON RESONANCE
DATA
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
FAR INFRARED RADIATION
GAIN
GERMANIUM
HOLES
INFORMATION
INFRARED RADIATION
LASERS
MAGNETIC FIELDS
METALS
NUMERICAL DATA
RADIATIONS
RESONANCE
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
STIMULATED EMISSION
TUNING