Detection of Ethylene C2H4 with a 1629.5nm Laser

Detection of Ethylene C2H4 with a 1629.5nm Laser

Used for ethylene gas concentration detection, supplying large quantities of 1629.5nm butterfly lasers, a partner of industrial instrument manufacturers!

Laser center wavelength: 1629.5nm

Purpose: Ethylene detectionC2H4

Principle of laser gas detection:TDLAS,

TDLASisTunable Diode Laser Absorption Spectroscopyabbreviation,Namely:Tunable semiconductor laser absorption spectroscopy

Packaging form:14Needle butterfly shaped packaging,TO39，TO56encapsulation

Brand: IrelandReferences

Supplier: Shenzhen Lituo Optoelectronics Co., Ltd

delivery cycle: 4week

Detection of Ethylene C2H4 with a 1629.5nm Laser

EP1629-5-DM-B06-FA

EP1629-5-DMThe series adopts1629.5nmThe absorption line is used to detect ethylene C2H4. based onReferencesThe Discrete Mode Technology Platform, in1629.5nmProvides stable laser performance within the wavelength range, suitable for ethylene gas detection applications.

•packaging options:14Needle butterfly shaped packaging,TO39 (beltTEC)，TO56, DX-1module(Drivers andTEC）

•Common wavelengths in this area: 1629.5nm

• Excellent and stable spectral performance

•Integrated no external cavity design

•The center wavelength can be adjusted by temperature or current adjustment range: +/-1nm

•Low sensitivity to mechanical vibration

1629.5nm laser detection of ethylene C2H4，The absorption spectrum database is as follows:

spectrogram

Can provide wavelengths and applications:

2332nm -carbon monoxide(CO)

2327nm -carbon monoxide(CO)

2121.5nm - nitrous oxide N2O

2121.8nm - Hydrogen H2

2122nm - nitrous oxide N2O

2051nm -carbon dioxide(CO2)

2020nm FPlaser diode

2004nm -carbon dioxide(CO2)

1981nm -ammonia(NH3)

1950nm -laser(Quantum communication, medical equipment)

1877nm -water molecule(H2O)

1854nm -water molecule(H2O)

1742nm -hydrogen chloride(HCl)

1683nm –ethaneC2H6

1680nm –ethaneC2H6

1654nm -methane(CH4)

1651nm -methane(CH4)

1590nm -hydrogen sulfide(H2S)

1578nm - CO / CO2

1574.5nm -hydrogen sulfide(H2S)

1572nm –carbon dioxideCO2

1573.3nm -carbon dioxideCO2

1566nm -carbon monoxide(CO)

1550nm -Narrow linewidth laser

1531nm -ammonia(NH3)

1521nm -acetyleneC2H2

1512.2nm -ammonia(NH3)

1398nm -water molecule(H2O)

1392.5nm -water molecule(H2O)

1343.5nm -water molecule(H2O)

1278nm -hydrogen fluoride(HF)

1273nm -hydrogen fluoride(HF)

780nm -laser

760nm -oxygen(O2)

TDLAS（Tunable Diode Laser Absorption SpectroscopyTunable diode laser absorption spectroscopy is a high-precision and high-sensitivity gas detection method widely used in environmental monitoring, industrial process control, medical diagnosis and other fields. The following are its core points:

1. Basic Principles

• Selective absorptionGas molecules absorb laser energy at specific wavelengths (corresponding to their energy level transitions), and the absorption intensity is related to the gas concentration-Lambert's law.

• wavelength modulationBy fine-tuning the wavelength of the diode laser (usually±Scanning the absorption spectral lines of the target gas at the nanoscale to eliminate background interference.

2. Key technical features

• high sensitivity: Detectableppm(One millionth) or evenppbA concentration of one billionth.

• real-time responseMillisecond level dynamic monitoring, suitable for rapidly changing processes.

• Non contact measurementNo sampling required, direct in-situ detection (such as smoke ducts and pipelines).

• Strong anti-interference ability: Through second harmonic detection（2f-WMS）Suppress noise and improve signal-to-noise ratio.

3. System Composition

• Tunable diode laser: emitting narrow linewidth laser (such asDFBLaser).

• Gas absorption tankOpen path or closed chamber (multiple reflection cells can increase the optical path).

• photodetectorReceive attenuated laser signals.

• Signal processing moduleDemodulate the absorption signal and calculate the concentration.

4. Typical Applications

• Industrial emission monitoring：CH4TheNH3TheCO2TheCOTheC2H2TheC2H4TheC2H6TheSO₂TheNOxTheHClTheHFWaiting for gas.

• energy securityNatural gas pipeline leak detection（CH₄）.

• Medical Respiratory AnalysisIn exhalationCOTheNOMarker detection.

• Aerospace and scientific researchAnalysis of atmospheric composition of Mars rover (such asCuriosity Rover）.

5. Strengths and Challenges

• advantage：

• No need to preprocess the sample, reducing errors.

• Can simultaneously measure multiple gases (multiple laser combinations).

• challenge：

• High cost (precision lasers and optical components).

• Cross interference in complex environments (requiring precise spectral line screening).

6. Development Trends

• Multi gas integrationMulti wavelength laser array or supercontinuum laser.

• Miniaturization and portability：MEMSLaser and on-chip integrated optics.

• Artificial intelligence assistedDeep learning of spectral data to improve inversion accuracy.

TDLASBecause of itexcellentIts performance has become one of the mainstream technologies for trace gas detection, especially irreplaceable in harsh environments such as high temperature, high pressure, and corrosiveness.