Laser beam deflection as a probe of laser ablation of materials

Journal Article · Mon Dec 04 04:00:00 EST 1989 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.102293· OSTI ID:5000239

Sell, J A; Heffelfinger, D M ^[1]; Ventzek, P; Gilgenbach, R M ^[2]

---

1. Physics Department, General Motors Research Laboratories, Warren, Michigan 48090-9055 (US)
2. Intense Energy Beam Interaction Laboratory, Nuclear Engineering Department, University of Michigan, Ann Arbor, Michigan 48109-2104 (US)

Helium-neon laser beam deflection is used to study excimer laser ablation of polymers and a YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} superconductor. Density gradients above pulsed laser heated or ablated samples deflect the He-Ne laser beam and this is measured using a position sensitive detector. The technique permits the determination of the laser fluence threshold for ablation both in a vacuum and in air, and the velocity of the ablation products in a vacuum. A model of the thermal deflection at low fluence was developed which enables measurements of thermal diffusivity of the air.

• OSTI ID: 5000239
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 55:23; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABLATION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COLLISIONS
COPPER COMPOUNDS
COPPER OXIDES
ELECTROMAGNETIC RADIATION
FABRICATION
FILMS
GAS LASERS
HELIUM-NEON LASERS
LASER RADIATION
LASERS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHOTON COLLISIONS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIATIONS
SUPERCONDUCTING FILMS
THERMAL DIFFUSIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES