Optics Facility

NANOTECH @ WFU

This general purpose facility provides advanced optical tools for Nanotech not typically found open to users. The facility is located at the Deacon Blvd. site and operational hours are 9 am to 4 pm M-F. For a tour or scheduling contact: nanotech@wfu.edu.

FYI

There are three research labs carrying out optical measurements at Wake Forest University that involve nanosciences...

Prof. William's fast laser and spectroscopy lab

Prof. Bonin's optical tweezers and optical trapping

Prof. Carroll's Bio-optics and Meta-optics lab

Optics

2 Olympus 60M light microscopes

1 Fluorescence microscope

1 Nikon Metallographic microscope

A SPEX 1.25 m spectrometer with multiple grating blazings available

A variety of ocean optics spectrometers

2 Ar ion lasers

2 pulsed YAG spectra physics lasers with doublers

A pulsed nitrogen laser from spectra physics

A nonlinear optical transmission test bed including z-scan

A full assortment of detectors, counters, and calibration sources, UV-NIR wavelengths at ns to cw.

An AM 1.5 g calibrated standard

2 broad band sources

An assortment of optical hardware, mirrors and optics for working through the UV-NIR.

Sources

Quanta Ray^® Nd YAG with 532 and 1064 nm (ns). Repetition rates from 10 to 100 Hz and energies in excess of 2500 mJ/pulse

Nitrogen pumped dye system (ns) Nitrogen pumped dye lasers cover the spectral range from 360 nm to 950 nm. We offer both fixed frequency and tunable models. In this dye laser system, the dye solution is optically pumped with a nitrogen laser and produces pulsed visible laser light. Exchanging dye cuvettes alters the dye laser output wavelength.

Ar ion CW laser system The Innova® series has earned an excellent reputation as a laboratory and industrial workhorse. It provides a unique combination of high performance and affordability for applications such as Raman spectroscopy, fluorescence spectroscopy, laser pumping, and laser doppler velocimetry.

Ar ion Laser System The Stabilite^® 2017 offers scientific-grade performance, rock-solid dependability. Up to 6 W all-lines power and >100 mW of single-line TEM₀₀ power from most visible argon lines between 454.5 and 514.5 nm

(descriptions from the manufacturers)

Techniques

Nonlinear transmission: A Nd YAG pulsed laser system with 8 nsec pulse resolution, along with high power matched optical detectors is used for optical limiting studies. We have both f/65 and f/5 optical systems for testing.

Z-Scan: We utilize a calibrated linear translation stage with three avaialble laser lines all in the nanosecond time regime.

Raman Spectroscopy: NANOTECH also has RAMAN scattering capabilities with a variety of light sources for resonant studies as well as micro-Raman for samples that require low fluences.

raman