Broadband THz lasing from a photon-phonon quantum cascade structure emitting from 2.8 to 4.1 THz.

Laser emission over a broad range of frequencies from 2.8 to 4.1 THz is reported from a two-quantum well, photon-phonon cascade structure. Internal quantum efficiencies reaching 43% are evaluated at 10 K. Maximum operating temperatures of 125 K are reported, with peak optical powers in excess of 30 mW from a double-metal ridge waveguide. The laser operates in both polarities, showing laser action in reverse bias up to a temperature of 90 K.

• Publication year

  2010

• Venue

  CLEO/QELS: 2010 Laser Science to Photonic Applications

• Publication date

  2010-04-12

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1364/OE.18.008043PMID 20588648
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• Laser action persists up to 125 K, and reverse-bias operation supports lasing up to 90 K.

  Confidence 0.97

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) reviewB (s683577b42) reviewKiller Whale (322360f1c1) reviewAK (4715169a40) reviewJake Seo (Twitter) (bmuzj8twwb) review
• Peak optical power exceeds 30 mW when the device is implemented in a double-metal ridge waveguide.

  Confidence 0.96

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) reviewB (s683577b42) reviewKiller Whale (322360f1c1) reviewAK (4715169a40) reviewJake Seo (Twitter) (bmuzj8twwb) review
• Internal quantum efficiency reaches 43% at 10 K.

  Confidence 0.98

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) reviewB (s683577b42) reviewKiller Whale (322360f1c1) reviewAK (4715169a40) reviewJake Seo (Twitter) (bmuzj8twwb) review
• Broadband terahertz lasing is observed from the photon-phonon quantum cascade structure across 2.8 to 4.1 THz.

  Confidence 0.99

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) reviewB (s683577b42) reviewKiller Whale (322360f1c1) reviewAK (4715169a40) reviewJake Seo (Twitter) (bmuzj8twwb) review

• double-metal ridge waveguide

  waveguide

  A waveguide geometry that confines terahertz modes within a ridge-shaped laser cavity using metal layers on both sides.

  Aliases: double metal ridge waveguide, double-metal ridge

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• emission bandwidth

  performance characteristic

  The span of output frequencies covered by the laser emission.

  Aliases: frequency range, spectral range

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) reviewB (s683577b42) reviewKiller Whale (322360f1c1) reviewAK (4715169a40) reviewJake Seo (Twitter) (bmuzj8twwb) review
• internal quantum efficiency

  performance metric

  A measure of how efficiently injected carriers are converted into emitted photons inside the device.

  Aliases: IQE

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) reviewB (s683577b42) reviewKiller Whale (322360f1c1) reviewAK (4715169a40) reviewJake Seo (Twitter) (bmuzj8twwb) review
• operating temperature

  performance metric

  The temperature range over which the laser can sustain lasing action.

  Aliases: maximum operating temperature, lasing temperature

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) reviewB (s683577b42) reviewKiller Whale (322360f1c1) reviewAK (4715169a40) reviewJake Seo (Twitter) (bmuzj8twwb) review
• peak optical power

  performance metric

  The maximum emitted optical power measured from the laser device.

  Aliases: peak power, optical output power

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) reviewB (s683577b42) reviewKiller Whale (322360f1c1) reviewAK (4715169a40) reviewJake Seo (Twitter) (bmuzj8twwb) review
• photon-phonon quantum cascade structure

  device structure

  A quantum cascade semiconductor structure that combines photon- and phonon-assisted transitions in its active region.

  Aliases: photon-phonon cascade structure

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• reverse bias operation

  operating mode

  Device operation under voltage polarity opposite to the usual forward-bias direction.

  Aliases: reverse bias, reverse-bias operation

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• terahertz lasing

  device behavior

  Laser emission in the terahertz frequency range.

  Aliases: THz lasing, THz laser emission

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