Editing Vernier scale (section)

==Recent uses==
This section includes references to techniques which use the Vernier principle to make fine-resolution measurements.

[[Vernier spectroscopy]] is a type of cavity-enhanced laser absorption spectroscopy that is especially sensitive to trace gases. The method uses a [[frequency-comb]] laser combined with a high-finesse [[optical cavity]] to produce an [[absorption spectrum]] in a highly parallel manner. The method is also capable of detecting trace gases in very low concentration due to the enhancement effect of the optical resonator on the effective optical path length.<ref name="Zhu_Paper">{{cite journal |author=Feng Zhu |author2=James Bounds |author3=Aysenur Bicer |author4=James Strohaber |author5=Alexandre A. Kolomenskii |author6=Christoph Gohle |author7=Mahmood Amani |author8=Hans A. Schuessler |title=Near infrared frequency comb vernier spectrometer for broadband trace gas detection |journal=Opt. Express |volume=22 |issue=19 |pages=23026–23033 |year=2014 |doi=10.1364/OE.22.023026|pmid=25321773 |arxiv=1407.1075 |bibcode=2014OExpr..2223026Z |s2cid=119270139 }}</ref>