C. Wang (CN) ShanghaiTech University

ShanghaiTech University

Author Of 3 Presentations

 Conference Calendar
(SL) Semiconductor Lasers

WG3.4 - LINEWIDTH BROADENING FACTOR OF AN INTERBAND CASCADE LASER OPERATED ABOVE THRESHOLD

Presentation Type
Contributed Submission
Authors
Date
10/02/2019
Time
01:30 PM - 03:00 PM
Room
La Vista D/E
Duration
15 Minutes
Lecture Time
02:45 PM - 03:00 PM

Abstract

Abstract

We show that the linewidth broadening factor of a mid-infrared interband cascade laser operated above the lasing threshold is around 2.0, which does not increase with increasing pump current. The linewidth broadening factor is extracted from the self-mixing interferometry technique.

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(SL) Semiconductor Lasers

WP25 - OPTICAL FEEDBACK EFFECTS ON THE RELATIVE INTENSITY NOISE OF A MID-INFRARED QUANTUM CASCADE LASER

Presentation Type
Contributed Submission
Authors
Date
10/02/2019
Time
06:00 PM - 08:00 PM
Room
El Mirador B/C
Lecture Time
06:00 PM - 06:00 PM

Abstract

Abstract

We experimentally demonstrate that the relative intensity noise of a quantum cascade laser is insensitive to optical feedback. The feedback induced noise variation is less than 2.5 dB up to a feedback ratio of 31%. Rate equation analysis agrees well with the experimental observation.

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(SL) Semiconductor Lasers

WP26 - FREQUENCY NOISE REDUCTION OF QUANTUM CASCADE LASERS USING OPTICAL FEEDBACK

Presentation Type
Contributed Submission
Authors
Date
10/02/2019
Time
06:00 PM - 08:00 PM
Room
El Mirador B/C
Lecture Time
06:00 PM - 06:00 PM

Abstract

Abstract

We theoretically demonstrate that strong optical feedback can reduce the frequency noise of quantum cascade lasers by two orders of magnitude, which is almost independent on the feedback phase. In addition, the spectral linewidth of the laser with optical feedback is analytically derived.

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Presenter Of 3 Presentations

 Conference Calendar
(SL) Semiconductor Lasers

WG3.4 - LINEWIDTH BROADENING FACTOR OF AN INTERBAND CASCADE LASER OPERATED ABOVE THRESHOLD

Presentation Type
Contributed Submission
Authors
Date
10/02/2019
Time
01:30 PM - 03:00 PM
Room
La Vista D/E
Duration
15 Minutes
Lecture Time
02:45 PM - 03:00 PM

Abstract

Abstract

We show that the linewidth broadening factor of a mid-infrared interband cascade laser operated above the lasing threshold is around 2.0, which does not increase with increasing pump current. The linewidth broadening factor is extracted from the self-mixing interferometry technique.

Collapse
(SL) Semiconductor Lasers

WP25 - OPTICAL FEEDBACK EFFECTS ON THE RELATIVE INTENSITY NOISE OF A MID-INFRARED QUANTUM CASCADE LASER

Presentation Type
Contributed Submission
Authors
Date
10/02/2019
Time
06:00 PM - 08:00 PM
Room
El Mirador B/C
Lecture Time
06:00 PM - 06:00 PM

Abstract

Abstract

We experimentally demonstrate that the relative intensity noise of a quantum cascade laser is insensitive to optical feedback. The feedback induced noise variation is less than 2.5 dB up to a feedback ratio of 31%. Rate equation analysis agrees well with the experimental observation.

Collapse
(SL) Semiconductor Lasers

WP26 - FREQUENCY NOISE REDUCTION OF QUANTUM CASCADE LASERS USING OPTICAL FEEDBACK

Presentation Type
Contributed Submission
Authors
Date
10/02/2019
Time
06:00 PM - 08:00 PM
Room
El Mirador B/C
Lecture Time
06:00 PM - 06:00 PM

Abstract

Abstract

We theoretically demonstrate that strong optical feedback can reduce the frequency noise of quantum cascade lasers by two orders of magnitude, which is almost independent on the feedback phase. In addition, the spectral linewidth of the laser with optical feedback is analytically derived.

Collapse