Table. 1 Summary of LN-MFP photoacoustic detection performance

From: Multifunctional lithium niobate platform for photodetection and photoacoustic and thermoelastic gas sensing

Light sources

Wavelength (μm)

Molecules

Power (mW)

Modulation amplitude

Sensitivity

NNEA (cm−1 W Hz−1/2)

VIS LED

0.45

NO2

1200

/

38 ppb

/

NIR LD

1.39

H2O

19

0.86 cm-1

1 ppm

5.82  ×  10-9

NIR LD

1.53

C2H2

3700

0.44 cm-1

63 ppb

2.7  ×  10-8

NIR LD

2

CO2

10.6

0.27 cm-1

9 ppm

2.53  ×  10-8

MWIR ICL

3.37

CH4

6.5

0.29 cm-1

49 ppb

8.36  ×  10-9

LWIR QCL

9.77

NH3

82.3

0.14 cm-1

7 ppb

6.58  ×  10-10

  1. VIS LED visible light emitting diode, NIR LD, MWIR ICL mid-wave infrared interband cascade laser, LWIR QCL long-wave infrared quantum cascade lasers. NNEA normalized noise equivalent absorption coefficient.
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