For the last two decades, we have been working on three photothermal techniques such as photoacoustic [1-3], photothermal deflection [4-5], and thermal lens technique [6-8]. The photoacoustic technique has been used to investigate the thermal and transport properties of intrinsic and doped semiconductors [1-3, 9], conducting polymers [10], porous ceramics [11], liquid crystals [12], single crystals [13], nanocomposites [14], etc. On the other hand, photothermal deflection is used to investigate the heat transport through intrinsic and doped semiconductors as well as multi-layered superlattices [4-5]. The application of the thermal lens technique has been further extended to investigate the plasmonic control of emission properties of fluorophores as well as energy transfer studies[16-20]. Recently, the laser-induced photothermal effect is exploited for crystallization [21-22] and heavy metal detection [23].

1) Physica Status Solidi (a), 195 (2), 416-421 (2003)

2) Journal of Physics D: Applied Physics, 36 (8), 990-993 (2003)

3) Physica Status Solidi (a), 196(2), 384-389 (2003)

4) Applied Physics B: Lasers and Optics, 77, 633-637 (2003)

5) Physical Review B, 68 (16), 165319 (2003) [selected on virtual journal of ultrafast science, Nov. 2003].

6) Spectrochimica Acta part A: Molecular and Biomolecular Spectroscopy, 59, 487-491 (2003)

7) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 61 (13-14), 2799 -2802 (2005)

8) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 67, 3-4, 678-682 (2007)

9) Physica Status Solidi (a), 196(2), 384-389 (2003)

10) Physical Review B, 69, 235201 (2004)

11) International Journal of Thermophysics, 28(1), 123 - 132 (2007)

12) Smart Materials and Structures, 16 (4), 1298-1301 (2007)

13) Materials Research Bulletin, 43, 1641-1648 (2008)

14) Journal of Luminescence, 137, 225-229 (2013)

15) Applied Physics B: Lasers and Optics, 113 (4), 581-587 (2013)

16) Applied Physics B: Laser and Optics, 115, 335-342 (2014)

17) Journal of Thermal Analysis and Calorimetry, 119, 453-460 (2015)

18) Physical Chemistry Chemical Physics,17,15816-15821 (2015)

19) Journal of Luminescence, 172,39-46 (2016)

20) RSC Advances, 6(7), 62390-62398 (2016)

21) Photochemistry and Photobiological Sciences, 16, 870-882 (2017)

22) Scientific Reports, 8, 16018 (2018)

23) Optik,241, 166988 (2021)