Research Progress on the Application of Tunable Diode Laser Absorption Spectroscopy

Wei, 聂伟 Nie; Ruifeng, 阚瑞峰 Kan; Chenguang, 杨晨光 Yang; Bing, 陈兵 Chen; Zhenyu, 许振宇 Xu; Wenqing, 刘文清 Liu

doi:10.3788/cjl201845.0911001

Cited by 11 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…波长可连续调谐的高功率绿光激光器在生物医学、激光显示、激光雷达、光谱分析、激光加工等许多方面有着非常广泛的应用 [1][2][3][4][5] 。光泵浦垂直外腔面发射激光器(vertical-external-cavity surface-emitting lasers， VECSELs)，又称半导体碟片激光器(semiconductor disk lasers，SDLs)，能在较高的输出功率水平下，同时保持良好的光束质量 [6,7] 。其半导体量子阱材料构成的增益介质具数十纳米的增益带宽，结合灵活的外部谐振腔结构，为高功率下较宽的波长连续调谐提供了可能性 [8,9] 。 VECSEL 在产生绿光方面具有几个显著的优势。一是输出功率高，VECSEL 能够以较高电光转换效率产生高功率的绿光输出 [10] 。二是光束质量好，VECSEL 产生的绿光通常具有很好的光束质量，即具有接近衍射极限的较小发散角。三是波长可连续调性 [11] ，VECSEL 可以利用外腔中的插入元件来实现激光波长的连续调谐。近年来，在 1μm 波长附近的近红外可调谐 VECSEL 取得了不少进展。2010 年 Borgentun C [12] 等人采用直线谐振腔结构和 1 mm 厚的双折射滤波片(Birefringent Filter，BRF) ，实现了从 967 nm 到 1010 nm 的连续调谐。2011 年 Borgentun C [13] 等人采用直线腔结构和 2 mm 厚的 BRF，实现了中心波长 995 nm 附近最大输出功率 7.5 W 和 32 nm 的波长调谐范围。2015 年 Nakdali D A [14] 等人采用直线腔和 1 mm 厚的 BRF，得到了 37 nm 的波长调谐范围。2017 年 Broda A [15] 等人通过对增益芯片的特殊设计，采用 V 型谐振腔中，在中心波长 985 nm 处，实现了 95 nm(937 nm ~ 1032 nm)波长调谐范围。2023 年 Qiu X L [16] 等采用直线腔和 1 mm 厚的 BRF，获得了从 1044.5 nm 到 1092.1 nm 连续可调的波长覆盖。在绿光波段，2008 年 Maclean A J [17] 等人使用 Z 型结构谐振腔及 4 mm 厚的 BRF，实现了 10 nm(526 nm ~ 536 nm)的波长连续可调谐，在调谐范围内输出功率的最大值超过 1 W。2012 年 Lin J P [18] 等人利用 VECSEL 泵浦的腔内连续拉曼激光器和温度调谐的 LBO 晶体，在绿光波段实现了 17.5 nm(548.5 nm ~ 566 nm)的调谐。同年，Hein A [19] 等人采用 V 型结构谐振腔及 2 mm 厚的 BRF，在 513 nm ~ 535 nm 的绿光光谱范围内获得 22 nm 的调谐，并在 524.7 nm 处得到 4.1 W 的最大输出功率。2014 年 Lukowski M [20] 等人报道了一种共线双波长 VECSEL，利用 T 型结构谐振腔和 1 mm 厚度 BRF，获得了 5 nm 的调谐范围和超过 2 W 的绿光输出功率。2019 年，Qiu X L [21] 等人在直线谐振腔中插入 LBO 晶体，利用 0.…”

Section: 引言unclassified

509 nm high power wide-tuned external cavity surface emitting laser

Wang,

Peng,

et al. 2024

Acta Phys. Sin.

View full text Add to dashboard Cite

High power widely tunable green lasers have potential applications in many fields such as biomedical, lidar, laser spectroscopy, laser display, underwater wireless optical communication, fine processing of nonferrous metals, and so on. Vertical-external-cavity surface-emitting lasers, also known as semiconductor disk lasers, have the advantages of high power, good beam quality and wide bandwidth of gain medium. In this paper, a gain chip with reverse-growth epitaxy structure and emitting wavelength of 1018 nm is designed. A bandwidth of 74 nm above the reflectivity of greater than 99.1 % in the DBR reflection spectrum is obtained, which lays a solid foundation for the realization of high-power widely tunable output. The laser cavity combines a 1018 nm semiconductor gain chip, a folded mirror, and a plane mirror to construct a compact V-shaped resonant cavity. A class I phase-matched LBO nonlinear crystal with a length of 10 mm is placed at the beam waist of the cavity to realize a highly efficient frequency doubling process to produce 509 nm green laser. To meet the requirement of the polarization during frequency conversion and to tune the oscillating wavelength of the laser, a birefringent filter (BRF) is employed in the laser resonant cavity. When the thickness of the used BRF is 1 mm, the obtained wavelength tuning ranges of the fundamental laser and the frequency doubled green laser are 47.1 nm and 20.1 nm, respectively, showing a good tuning capability of the laser. The laser's performance varies with the different thickness of the BRF. When using a 2 mm BRF, a maximum output power of the frequency-doubled green laser of 8.23 W is achieved during continuous tuning, indicating an ideal compatibility of wide tuning characteristics and a high output power. Meanwhile, its beam quality M<sup>2</sup> factors are 1.00 and 1.03 in the x and y directions, respectively, demonstrating a near diffraction-limited excellent beam quality. This green laser also possesses a frequency doubling conversion efficiency of up to 68.2 %, which enables efficient conversion of the fundamental laser into the frequency doubled green laser. The optical-to-optical conversion efficiency from the absorbed pump light to the frequency-doubled green light also reaches 16.6 %. Meanwhile, the spectral linewidths of the green lasers under different thicknesses of BRFs are found that the thicker the BRF, the narrower the laser line widths, which is consistent with the theoretical results.

show abstract

Section: 引言unclassified

509 nm high power wide-tuned external cavity surface emitting laser

Wang,

Peng,

et al. 2024

Acta Phys. Sin.

View full text Add to dashboard Cite

show abstract

“…275,276 Tunable diode laser absorption spectroscopy (TDLAS) is a combination of the traditional laser absorption techniques with tunable diode lasers, which measures the absorption characteristics of the molecules by scanning across its particular central absorption peak. 277,278 TDLAS uses a laser light source that can be tunable over a small wavenumber range with a very narrow line width. One of the representative TDLAS applications for biological VOCs related research is the quan-tication of formaldehyde (CH 2 O).…”

Section: Reviewmentioning

confidence: 99%

Analytical methods for the analysis of volatile natural products

2023

Nat. Prod. Rep.

View full text Add to dashboard Cite

show abstract

“…And under natural conditions, there is no environment with water vapor concentration of 0 to build a reference optical path. However, we found that there was an absorption peak at 7306.75 cm -1 [12] , which is suitable for the measurement of H2O concentration through baseline inversion [13,14] .Set the pressure in the environmental parameters as 1atm and the optical path as 1 m. In HITRAN database and friend stations, the spectral related parameters in the wavelength range of 7142.85 cm -1 ~ 7352.94 cm -1 can be obtained. The Lorentz line type can be selected to calculate the absorption cross section, absorbance and absorption coefficient.…”

Section: Absorption Spectrum Analysismentioning

confidence: 99%

Study on spectral lines to improve the measurement accuracy of H2O molecular concentration based on TDLAS technology

Wang

Zhou²,

Yu³

et al. 2023

International Conference on Precision Instruments and Optical Engineering (PIOE 2022)

View full text Add to dashboard Cite

H2O is an important molecule in the atmosphere, which is closely related to climate change and industrial applications (such as combustion process). The detection of trace water vapor concentration is of great significance in earth ecology and industrial production. Tunable diode laser absorption spectroscopy (TDLAS) inverses the gas concentration by measuring the gas absorption spectrum. The wavelength of the common characteristic absorption peak of H2O molecule is 7181.16 cm-1. The spectral absorption peaks of different wavelengths are analyzed in the paper. It is proved that when 7306.75 cm-1 characteristic absorption peak is used to replace 7181.16 cm-1 characteristic absorption peak for concentration inversion, the influence can be reduced and the measurement accuracy can be improved by combining the target peak with the interference peak.

show abstract

Research Progress on the Application of Tunable Diode Laser Absorption Spectroscopy

Cited by 11 publications

References 0 publications

509 nm high power wide-tuned external cavity surface emitting laser

509 nm high power wide-tuned external cavity surface emitting laser

Analytical methods for the analysis of volatile natural products

Study on spectral lines to improve the measurement accuracy of H2O molecular concentration based on TDLAS technology

Contact Info

Product

Resources

About