Gain enhancement in a terahertz quantum cascade laser with parylene antireflection coatings

被引：19

作者：

Rungsawang, R. ^{[1
]}

Jukam, N. ^{[1
]}

Maysonnave, J. ^{[1
]}

Cavalie, P. ^{[1
]}

Madeo, J. ^{[1
]}

Oustinov, D. ^{[1
]}

Dhillon, S. S. ^{[1
]}

Tignon, J. ^{[1
]}

Gellie, P. ^{[2
]}

Sirtori, C. ^{[2
]}

Barbieri, S. ^{[2
]}

Beere, H. E. ^{[3
]}

Ritchie, D. A.

机构：

[1] Univ D Diderot, Univ P&M Curie, CNRS, Lab Pierre Aigrain,Ecole Normale Super,UMR 8551, F-75231 Paris 05, France

[2] Univ Paris 07, F-75251 Paris 05, France

[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

CONTINUOUS-WAVE; FREQUENCIES; OPTICS;

D O I：

10.1063/1.3562002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study the effect of parylene antireflection coatings on the gain of a 2.8 THz quantum cascade laser using terahertz time-domain spectroscopy. With antireflection coatings the threshold current increases as the mirror losses are increased, and the gain clamps at 16 cm(-1), compared to 10 cm(-1) for an uncoated device. These values are consistent with a drop in reflectivity from 0.320 to 0.053 as a consequence of the coating deposition. Further improvements could reveal the bare cavity gain and permit the quantum cascade laser to be used as an efficient terahertz amplifier. c 2011 American Institute of Physics. [doi: 10.1063/1.3562002]

引用

页数：3

共 18 条

[1] Gain measurements on GaAs-based quantum cascade lasers using a two-section cavity technique
Barbieri, S
Sirtori, C
Page, H
Beck, M
Faist, J
Nagle, J
[J]. IEEE JOURNAL OF QUANTUM ELECTRONICS, 2000, 36 (06) : 736 - 741
[2] 2.9 THz quantum cascade lasers operating up to 70 K in continuous wave
Barbieri, S
Alton, J
Beere, HE
Fowler, J
Linfield, EH
Ritchie, DA
[J]. APPLIED PHYSICS LETTERS, 2004, 85 (10) : 1674 - 1676
[3] Integrated terahertz pulse generation and amplification in quantum cascade lasers
Dhillon, S. S.
Sawallich, S.
Jukam, N.
Oustinov, D.
Madeo, J.
Barbieri, S.
Filloux, P.
Sirtori, C.
Marcadet, X.
Tignon, J.
[J]. APPLIED PHYSICS LETTERS, 2010, 96 (06)
[4] FOWLES GR, 1975, INTRO MODERN OPTICS, pCH4
[5] An anti-reflection coating for silicon optics at terahertz frequencies
Gatesman, AJ
Waldman, J
Ji, M
Musante, C
Yngvesson, S
[J]. IEEE MICROWAVE AND GUIDED WAVE LETTERS, 2000, 10 (07): : 264 - 266
[6] Antireflection coating formed by plasma-enhanced chemical-vapor deposition for terahertz-frequency germanium optics
Hosako, I
[J]. APPLIED OPTICS, 2003, 42 (19) : 4045 - 4048
[7] Parylene anti-reflection coating of a quasi-optical hot-electron-bolometric mixer at terahertz frequencies
Hübers, HW
Schubert, J
Krabbe, A
Birk, M
Wagner, G
Semenov, A
Gol'tsman, G
Voronov, B
Gershenzon, E
[J]. INFRARED PHYSICS & TECHNOLOGY, 2001, 42 (01) : 41 - 47
[8] JI M, 2000, P 11 INT S SPAC TER, P407
[9] Investigation of spectral gain narrowing in quantum cascade lasers using terahertz time domain spectroscopy
Jukam, N.
Dhillon, S. S.
Oustinov, D.
Zhao, Z. -Y.
Hameau, S.
Tignon, J.
Barbieri, S.
Vasanelli, A.
Filloux, P.
Sirtori, C.
Marcadet, X.
[J]. APPLIED PHYSICS LETTERS, 2008, 93 (10)
[10] Gain measurements of THz quantum cascade lasers using THz time-domain spectroscopy
Jukam, Nathan
Dhillon, Sukhdeep
Zhao, Zhen-Yu
Duerr, Georg
Armijo, J.
Sirmons, N.
Hameau, Sophie
Barbieri, S.
Filloux, Pascal
Sirtori, C.
Marcadet, X.
Tignon, Jerome
[J]. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 2008, 14 (02) : 436 - 442

← 1 2 →