Abstract
Fingerprints have many uses, chemical solution usually used to
detect fingerprints but it takes a time.
In this research He-Ne laser with output power 1mmW and wavelength
632.8nm and Diode laser with output power 5mmW and wavelength 532 nm
were used to detect fingerprints on Aluminum surface and other Glass surface,
fingerprints was exposure by laser beam through convex lens with focal length
5mm then a digital camera was used to record irradiated fingerprint.
The revealed results show clear images for the fingerprints using two
types of lasers He-Ne and Diode and appearing its characteristics on different
surfaces obviously.
Laser method to detect fingerprints is a simple method using low level
lasers without chemicals, in short period of time, with low cost and gives good
results.
Daood, M (2021). Detection of fingerprint using He-Ne (632.8 nm) and Diode (532 nm) lasers. Afribary. Retrieved from https://afribary.com/works/detection-of-fingerprint-using-he-ne-632-8-nm-and-diode-532-nm-lasers
Daood, Malka "Detection of fingerprint using He-Ne (632.8 nm) and Diode (532 nm) lasers" Afribary. Afribary, 19 May. 2021, https://afribary.com/works/detection-of-fingerprint-using-he-ne-632-8-nm-and-diode-532-nm-lasers. Accessed 28 Apr. 2024.
Daood, Malka . "Detection of fingerprint using He-Ne (632.8 nm) and Diode (532 nm) lasers". Afribary, Afribary, 19 May. 2021. Web. 28 Apr. 2024. < https://afribary.com/works/detection-of-fingerprint-using-he-ne-632-8-nm-and-diode-532-nm-lasers >.
Daood, Malka . "Detection of fingerprint using He-Ne (632.8 nm) and Diode (532 nm) lasers" Afribary (2021). Accessed April 28, 2024. https://afribary.com/works/detection-of-fingerprint-using-he-ne-632-8-nm-and-diode-532-nm-lasers