6035 Hg(Ar) Lamp in 6058 Fiber Optic Accessory.
These lamps produce narrow, intense lines from the excitation of various rare gases and metal vapors. They are used for wavelength calibration of spectroscopic instruments such as monochromators, spectrographs, and spectral radiometers. We also offer a full range of accessories, from mounts and holders, to fiber optic adapters and aperture shields.
We offer six lamps; choose the lamp or lamps that suit your wavelength range.
The 6035 Hg(Ar) Lamp is insensitive to temperature. It requires a two-minute warm-up for the mercury vapor to dominate the discharge, then 30 minutes for complete stabilization. The average intensity is remarkably constant and reproducible after the thermal conditions stabilize.
The 6034 Hg(Ne) Lamp is temperature dependent. When run in normal lab ambient, the output is very similar to that of the Hg(Ar) Lamp, which is the characteristic mercury line spectrum. Forced air-cooling (i.e. from a muffin fan) of the lamp adds the neon lines to the output.
We call these Pencil lamps because of their size and shape. They are made of double bore quartz tubing with two electrodes at one end sealed into a phenolic handle. A 1 ft. (305 mm) long cord with male connector is attached to the end of the handle for connection to the power supply.
1 Adjacent lines will remain unresolved on many spectroscopic systems.* These are neon lines brought out by forced air-cooling.** These lines are very weak, but forced air-cooling makes them more useful.
We offer different power supplies for different needs:
Choose an AC supply if output variations are not a concern, and if you are only operating one or two line lamps. This mode of operation also prolongs lamp life.
Use a DC supply if you are calibrating multichannel detectors, PDAs or CCDs, or if you are using various lamps, as these supplies run all our Spectral Line Lamps (AC supplies are lamp specific). Note: prolonged use in a single polarity DC Mode will shorten lamp life due to electrophoresis.
The curves shown illustrate the relative signal strength observed at various wavelengths. The signal can differ very significantly from these curves due to the spectral throughput of the optical system, e.g. monochromator and its grating, or FT-IR and its beam splitter, and the spectral responsivity of the detector being convolved with the spectral properties of the incident light to produce that signal. The differences can be pretty insignificant or quite drastic depending on the exact experimental conditions.
We offer mounts to hold one or two calibration lamps at the input slit of an Oriel Monochromator or Spectrograph.
The 6058NS Fiber Optic Accessory holds the face of an SMA terminated fiber close to the lamp to collect a portion of the light output for spectral calibration purposes.
If you simply want to hold the lamp in open air, use the 63670 Holder. It holds the lamp atop an optical rod.
We offer filters that fit over the lamp to block a specific wavelength region (Fig. 2). We offer the following models:
The shields listed below fit over the lamps to limit the radiation area. We offer three aperture sizes:
Exposure to UV radiation, even low intensity UV, may cause severe damage to the eyes and skin. We recommend you wear protective eyewear and gloves with any UV source. For disposal of mercury-containing lamps, refer to www.lamprecycle.org.