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公开(公告)号：JP2002076516A
公开(公告)日：2002-03-15
申请号：JP2001205754
申请日：2001-07-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BAILLARGEON JAMES NELSON , CAPASSO FEDERICO , CHO ALFRED Y , GMACHI CLAIRE F , HUTCHINSON ALBERT LEE , HWANG HAROLD YOONSUNG , PAIELLA ROBERTO , SERGENT ARTHUR M , SIVCO DEBORAH LEE , ALESSANDRO TOREDIKUCCHI
Abstract: PROBLEM TO BE SOLVED: To provide ability for finely controlling a central wavelength through waveguide coating without introducing a loss or non-linear refraction factor significant for dielectric materials or waveguide process having a low absorption rate within an intermediate IR range, and having high insulation durability for enabling high-power/high-temperature operation in ISB laser technology, through low loss mesa dielectric coating for providing efficient heat conduction through the side wall of mesa, by laterally sealing light without increasing threshold current density for lasing and further through low loss coating on a comparatively narrow mesa. SOLUTION: In a mesa structure semiconductor laser 10, a stripe structure contact 18 is specified on the top of the mesa, and patterned dielectric coating to be used for providing significant waveguide property contains chalcogenide glass 16. Especially, the application to an inter-sub-band (quantum cascade, for example,) is described.
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公开(公告)号：JP2002344071A
公开(公告)日：2002-11-29
申请号：JP2001287724
申请日：2001-09-20
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BETHEA CLYDE GEORGE , CAPASSO FEDERICO , YI CHO ALFRED , GMACHL CLAIRE F , HUTCHINSON ALBERT LEE , MARTINI RAINER , PAIELLA ROBERTO , SIVCO DEBORAH LEE , TREDICUCCI ALESSANDRO , WHITTAKER EDWARD ANTHONY
IPC: H01S5/042 , H04B10/00 , H04B10/10 , H04B10/118 , H04B10/22 , H04B10/105
Abstract: PROBLEM TO BE SOLVED: To provide a method for optically transmitting data to a remote receiver. SOLUTION: The method for optically transmitting the data to the remote receiver comprises a step of receiving a stream of input data signal, a step of modulating a mid-IR laser by a direct modulation by a waveform having a sequential value corresponding to the stream of the data signals, a step of pumping the mid-IR laser, so as to generate high optical power level corresponding to a different value of the sequential value and a low optical power level from a direct modulation, and a step of transmitting the output signal from the modulated mid-IR laser to the remote receiver via a free space communications channel.
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公开(公告)号：CA2349263C
公开(公告)日：2005-01-11
申请号：CA2349263
申请日：2001-05-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GMACHL CLAIRE F , CAPASSO FEDERICO , PAIELLA ROBERTO , SERGENT ARTHUR MIKE , TREDICUCCI ALESSANDRO , CHO ALFRED YI , SIVCO DEBORAH LEE , HUTCHINSON ALBERT LEE , BAILLARGEON JAMES NELSON , HWANG HAROLD YOONSUNG
Abstract: In a mesa geometry semiconductor laser, a patterned dielectric coating used to define the stripe geometry contact on the top the mesa and to provide significant waveguiding comprises a chalcogenide glass. Applications to intersubband (e.g., quantum cascade) lasers are specifically described.
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Patent Agency Ranking
公开(公告)号：CA2342080A1
公开(公告)日：2001-11-08
申请号：CA2342080
申请日：2001-03-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BAILLARGEON JAMES NELSON , SIVCO DEBORAH LEE , CHO ALFRED YI , CAPASSO FEDERICO , HUTCHINSON ALBERT LEE , GMACHL CLAIRE F , PAIELLA ROBERTO
Abstract: A self mode-locking (SML) mid-infrared (5 and 8 .mu.m) quantum cascade laser is formed that comprises both a relatively thin dielectric insulating layer (i.e., less than one-half micron in thickness) overlaid with an optically highly lossy (i.e., absorbing) layer, with a relatively long (approximately 3.5 mm) optical waveguide. Evidence of mode-locking is obtained from the measured optical spectra and corresponding interferograms, as well as from the rf spectra of the photocurrent detected with a fast quantum-well infrared photodetector. A n estimate for the pulse width of approximately 3 psec is inferred from these data.
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公开(公告)号：CA2364797A1
公开(公告)日：2002-07-22
申请号：CA2364797
申请日：2001-12-11
Applicant: STEVENS INST TECHNOLOGY , LUCENT TECHNOLOGIES INC
Inventor： CAPASSO FEDERICO , CHO ALFRED YI , MARTINI RAINER , GMACHL CLAIRE F , WHITTAKER EDWARD ANTHONY , HUTCHINSON ALBERT LEE , BETHEA CLYDE GEORGE , TREDICUCCI ALESSANDRO , PAIELLA ROBERTO , SIVCO DEBORAH LEE
Abstract: A process for optically transmitting data to a remote receiver includes receiving a stream of input data signals and modulating a mid-IR laser by direct modulation with a waveform whose sequential values are responsive of the dat a signals of the stream. The direct modulation includes pumping the mid-IR las er to produce high and low optical power levels in response to different ones of t he values. The process also includes transmitting output light from the modulated mid-I R laser to the remote receiver via a free space communications channel.
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公开(公告)号：CA2364797C
公开(公告)日：2006-04-25
申请号：CA2364797
申请日：2001-12-11
Applicant: LUCENT TECHNOLOGIES INC , TRUSTEES STEVENS INST TECH
Inventor： CAPASSO FEDERICO , BETHEA CLYDE GEORGE , SIVCO DEBORAH LEE , CHO ALFRED YI , HUTCHINSON ALBERT LEE , MARTINI RAINER , TREDICUCCI ALESSANDRO , PAIELLA ROBERTO , GMACHL CLAIRE F , WHITTAKER EDWARD ANTHONY
Abstract: A process for optically transmitting data to a remote receiver includes receiving a stream of input data signals and modulating a mid-IR laser by direct modulation with a waveform whose sequential values are responsive of the dat a signals of the stream. The direct modulation includes pumping the mid-IR las er to produce high and low optical power levels in response to different ones of t he values. The process also includes transmitting output light from the modulated mid-I R laser to the remote receiver via a free space communications channel.
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公开(公告)号：CA2342080C
公开(公告)日：2005-01-04
申请号：CA2342080
申请日：2001-03-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： PAIELLA ROBERTO , GMACHL CLAIRE F , HUTCHINSON ALBERT LEE , CHO ALFRED YI , BAILLARGEON JAMES NELSON , CAPASSO FEDERICO , SIVCO DEBORAH LEE
Abstract: A self-mode-locking (SML) mid-infrared (5 and 8 .mu.m) quantum cascade laser is formed that comprises both a relatively thin dielectric insulating layer (i.e., less than one-half micron in thickness) overlaid with an optically highly lossy (i.e., absorbing) layer, with a relatively long (approximately 3.5 mm) optical waveguide. Evidence of mode-locking is obtained from the measured optical spectra and corresponding interferograms, as well as from the rf spectra of the photocurrent detected with a fast quantum-well infrared photodetector. A n estimate for the pulse width of approximately 3 psec is inferred from these data.
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公开(公告)号：CA2349263A1
公开(公告)日：2002-01-07
申请号：CA2349263
申请日：2001-05-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HUTCHINSON ALBERT LEE , HWANG HAROLD YOONSUNG , CHO ALFRED YI , BAILLARGEON JAMES NELSON , SIVCO DEBORAH LEE , GMACHL CLAIRE F , PAIELLA ROBERTO , SERGENT ARTHUR MIKE , TREDICUCCI ALESSANDRO , CAPASSO FEDERICO
Abstract: In a mesa geometry semiconductor laser, a patterned dielectric coating used to define the stripe geometry contact on the top the mesa and to provide significant waveguiding comprises a chalcogenide glass. Applications to intersubband (e.g., quantum cascade) lasers are specifically described.
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