In:
Laser Physics, IOP Publishing, Vol. 32, No. 3 ( 2022-03-01), p. 035701-
Abstract:
Terahertz time domain spectroscopy (THz-TDS) is a well known technique for analyzing materials in terahertz regime. The stability and reproducibility of the THz signal amplitude is most crucial for reliable measurements using this technique. In this article, an extensive investigation on the origin and the impact of beam pointing fluctuations on amplitude of THz signal is performed. These fluctuations have been reduced to minimum level with control on sources of beam pointing fluctuation including air turbulences and temperature drifts. Under these controlled conditions, the standard deviation in the measurement of refractive index and absorption coefficient have been reduced up to 1.3 × 10 − 4 and 0.2 cm −1 , respectively.
Type of Medium:
Online Resource
ISSN:
1054-660X
,
1555-6611
DOI:
10.1088/1555-6611/ac4bdd
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2022
detail.hit.zdb_id:
2228434-5
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