Sorry! Your simulation took too long. Reduce your simulation range or increase Δν.
Sorry! We reduced your resolution νstep to reduce compute time.
Every mole fraction must be less than 1! See "How it works" for an explanation of how mixtures are handled.
Mole fractions should be less than 1! In the LineSurvey, mole fractions are used to scale linestrength.
You're simulating a big range. For surveys, we recommend using the LineSurvey tool.
Your wavelength is quite short! Check the HITRAN documentation to see if visible/UV lines are included for this species.
Not all of your lines were plotted, sorry! Either reduce your simulation window or increase the Linestrength cutoff.
Your simulation range is too big, Sorry! We can only simulate 5000 cm-1 at a time with HITRAN.
Sorry! Your minimum linestrength must be greater than 1e-10!
It looks like you're simulating N2 with a relatively short pathlength. N2 is only weakly infrared active. Make sure you double check how mixtures are calculated, described in the How It Works.
Some lines for in your simulation have estimated line strengths. The NIST database does not have all of the Einstein A coefficients for these species in this spectral window, so we estimate line strengths using A=107 s-1. Please use the LineSurvey tool to explore in more detail.
HITEMP CO2 and H2O have a lot of lines! Please reduce your simulation window to less than 1000 cm-1. Web browsers have a hard time plotting that much data, and the database queries can take a while.
This website (including all content and functions made available on or accessed through this site) is provided on an "as is" basis. While every effort has been made to ensure the accuracy of the information provided on this website, the information may contain errors, including technical or typographical errors. Use of information contained herein is at the user's risk. Information is subject to change or updating without notice. The products and/or the services described may be altered at any time, also without notice. Please contact SpectraPlot for the latest information. Please be aware that SpectraPlot may not use or have registered some of the aforementioned marks in other countries.
It is entirely the user's responsibility to take precautions to be certain that any material taken from this website is free of viruses, worms, Trojan horses or other harmful or potentially harmful items. SpectraPlot DISCLAIMS ALL LIABILITY TO ANY PARTY FOR ANY DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL OR OTHER DAMAGES IN CONNECTION WITH ANY USE OF THIS WEBSITE, OR ANY HYPER-LINKED OR OTHER ACCESSIBLE WEB SITE, INCLUDING, WITHOUT LIMITATION, ALL LOST PROFITS, DAMAGES FROM BUSINESS INTERRUPTION, AND LOSS OF PROGRAMS OR OTHER DATA, REGARDLESS OF WHETHER WE ARE EXPRESSLY ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OCCURRING.
Users are forbidden from abusing SpectraPlot in any way shape or form: abuse includes but is not limited to: writing scripts to automatically run simulations; launching denial of service attacks.
About SpectraPlot
SpectraPlot Ltd. is a 501(c)(3) non-profit organization. Our mission is twofold: 1) to strengthen the spectroscopy community and 2) to organize the photonics industry's information for spectroscopists.
To achieve these goals, Spectraplot offers integrated search tools for wavelength-dependent data (including spectral simulators and hardware listings) organized around function and use. These tools are aimed to accelerate spectroscopic and optical engineering and to remove transactional friction in the photonics industry. We hope you will join us in this mission by simply using our tools. If you are a vendor interested in either supporting SpectraPlot or including your catalogue on the site, get in touch with us at info@spectraplot.com. A couple FAQs are addressed below.
Q. But really, what is SpectraPlot?
A. SpectraPlot is a free, openly-available tool for scientists and engineers to simulate spectroscopic data and find the hardware you need to put spectroscopy into practice. SpectraPlot is an ongoing project, and we'll continue to add tools, databases, and calculators that benefit the science and engineering communities that advance and leverage spectroscopy.
You can run up to 3 simulations, each with 3 species (for a total of 9), before you must clear the plot.
L corresponds to the thickness of the slab of gas
All simulations assume a binary mixture of the absorbing/emitting species in air.
Emission simulations are calculated using the HITRAN 2012 and HITEMP 2010 databases and Kirchhoff's Law. Information on HITRAN and HITEMP can be found here
HITEMP simulations take much longer to run than HITRAN simulations, so please choose your simulation window wisely.
Please don't hesitate to get in touch using the 'Contact' link in the bottom right!