# Fundamentals of Attosecond Science and Technology (FAST)

- Institution: IIT Madras
- Department: Physics
- Teacher: Prof. Sivarama Krishnan
- Level: Undergraduate
- Language: English
- Subjects: Physics
- Source: [NPTEL](https://nptel.ac.in/courses/115105451)
- Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.)
- Syllabus: [at the source](https://nptel.ac.in/courses/115105451)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

## Lectures

1. [Introduction to waves, 1D wave equation and its solutions](https://invisiblenetwork.ai/learn/nptel/115105451/c6d7f7a32374) (Video)
2. [1D Light waves](https://invisiblenetwork.ai/learn/nptel/115105451/b83cba75df22) (Video)
3. [Characteristics of light waves - amplitude, absolute phase, wavelenght and frequency](https://invisiblenetwork.ai/learn/nptel/115105451/81f561c42181) (Video)
4. [Phase, Phase velocity and Phase delay](https://invisiblenetwork.ai/learn/nptel/115105451/07537410c43e) (Video)
5. [Complex notation for the description light waves and superposition](https://invisiblenetwork.ai/learn/nptel/115105451/ddeff1cdf043) (Video)
6. [Maxwell's equations to the 3D wave equation and its solutions](https://invisiblenetwork.ai/learn/nptel/115105451/56ad70ff11f2) (Video)
7. [Recap of Week 1](https://invisiblenetwork.ai/learn/nptel/115105451/3681dbd3ff41) (Video)
8. [3D wave equation and plane waves](https://invisiblenetwork.ai/learn/nptel/115105451/7db9bf078415) (Video)
9. [Complex notation for Electric fields, Superposition and interference](https://invisiblenetwork.ai/learn/nptel/115105451/388869e0631c) (Video)
10. [Fabry - Perot inteferometer and it transmittance](https://invisiblenetwork.ai/learn/nptel/115105451/b42e916be02c) (Video)
11. [Physical interpretation of FP transmittance](https://invisiblenetwork.ai/learn/nptel/115105451/2509ce0ee348) (Video)
12. [Recap of Fabry - Perot modes](https://invisiblenetwork.ai/learn/nptel/115105451/2ce61656bf52) (Video)
13. [Free spectral range of a Fabry - Perot etalon](https://invisiblenetwork.ai/learn/nptel/115105451/6dc07f6fec2b) (Video)
14. [Resonator modes and optical pulses - insight](https://invisiblenetwork.ai/learn/nptel/115105451/a0016038ef45) (Video)
15. [Table - Top Coherent & Incoherent Imaging](https://invisiblenetwork.ai/learn/nptel/115105451/e4dccbc85ec2) (Video)
16. [Recap of Etalon free spectral range](https://invisiblenetwork.ai/learn/nptel/115105451/a330cf2caa29) (Video)
17. [Line width and finesse of an etalon](https://invisiblenetwork.ai/learn/nptel/115105451/9257dbbabf07) (Video)
18. [Actual resonator modes](https://invisiblenetwork.ai/learn/nptel/115105451/30204325e943) (Video)
19. [Resonator configurations and stability](https://invisiblenetwork.ai/learn/nptel/115105451/cc23182a2ee3) (Video)
20. [Recap of optical resonators](https://invisiblenetwork.ai/learn/nptel/115105451/5d8c819c3e75) (Video)
21. [Introduction of light pulses](https://invisiblenetwork.ai/learn/nptel/115105451/fff1281186bf) (Video)
22. [Complex amplitude, Gaussian pulse](https://invisiblenetwork.ai/learn/nptel/115105451/5bdb107ae036) (Video)
23. [Recap of light pulses](https://invisiblenetwork.ai/learn/nptel/115105451/c56cd4700972) (Video)
24. [Introduction of Fourier Transforms](https://invisiblenetwork.ai/learn/nptel/115105451/3ef23efb6ef7) (Video)
25. [Tutorial 1](https://invisiblenetwork.ai/learn/nptel/115105451/1865457a9ec5) (Video)
26. [Motivating Fourier Transforms](https://invisiblenetwork.ai/learn/nptel/115105451/9735f6af1d84) (Video)
27. [Fourier Transform Properties](https://invisiblenetwork.ai/learn/nptel/115105451/026ec113fb4c) (Video)
28. [Frequency domain electric field](https://invisiblenetwork.ai/learn/nptel/115105451/45b8db7ce961) (Video)
29. [Recap of Fourier transform properties](https://invisiblenetwork.ai/learn/nptel/115105451/dbe5db551556) (Video)
30. [Frequency domain description of pulses](https://invisiblenetwork.ai/learn/nptel/115105451/96c5252a6572) (Video)
31. [Spectral Phase](https://invisiblenetwork.ai/learn/nptel/115105451/ce9cb87c08f0) (Video)
32. [Recap of spectral phase](https://invisiblenetwork.ai/learn/nptel/115105451/f8b4b2a86673) (Video)
33. [Instantaneous Frequency and group delay](https://invisiblenetwork.ai/learn/nptel/115105451/1109e100f52c) (Video)
34. [Phase wrapping, blanking, and Tayor series expansion](https://invisiblenetwork.ai/learn/nptel/115105451/6e32661feecc) (Video)
35. [Recap of instantaneous frequency, phase wrapping, and phase blanking](https://invisiblenetwork.ai/learn/nptel/115105451/4f9e52e96413) (Video)
36. [Frequency domain phase expansion, group delay dispersion](https://invisiblenetwork.ai/learn/nptel/115105451/573280b012fa) (Video)
37. [Absolute Phase](https://invisiblenetwork.ai/learn/nptel/115105451/1ac2076f92eb) (Video)
38. [Recap of concepts + discussion](https://invisiblenetwork.ai/learn/nptel/115105451/bf5466bf4822) (Video)
39. [Absolute Phase (revisited)](https://invisiblenetwork.ai/learn/nptel/115105451/9e6126949418) (Video)
40. [Carrier envelope phase, frequency comb](https://invisiblenetwork.ai/learn/nptel/115105451/4a2828a92b8e) (Video)
41. [Discussion](https://invisiblenetwork.ai/learn/nptel/115105451/f41af4452455) (Video)
42. [Recap of concepts](https://invisiblenetwork.ai/learn/nptel/115105451/d3004b9f1733) (Video)
43. [First order phase](https://invisiblenetwork.ai/learn/nptel/115105451/83eec4ffffb2) (Video)
44. [Second order phase](https://invisiblenetwork.ai/learn/nptel/115105451/bf59ca088a3a) (Video)
45. [Recap of first order and second order phase](https://invisiblenetwork.ai/learn/nptel/115105451/4662b9c80baf) (Video)
46. [Chirped pulse: Instantaneous frequency and Fourier transform](https://invisiblenetwork.ai/learn/nptel/115105451/e6cad7e8cca2) (Video)
47. [Group delay, nonlinearly chirped pulse](https://invisiblenetwork.ai/learn/nptel/115105451/b96db7458152) (Video)
48. [Recap of chirped pulses](https://invisiblenetwork.ai/learn/nptel/115105451/16f12a87b198) (Video)
49. [Quadratic chirp pulses](https://invisiblenetwork.ai/learn/nptel/115105451/2277fb4e7d58) (Video)
50. [Higher order spectral phase](https://invisiblenetwork.ai/learn/nptel/115105451/3ee1e97189e8) (Video)
51. [Recap and discussion on higher order phase](https://invisiblenetwork.ai/learn/nptel/115105451/19899cfc5f6f) (Video)
52. [Relative importance of intensity and phase](https://invisiblenetwork.ai/learn/nptel/115105451/0c54341b2076) (Video)
53. [Pulse propagation through a medium](https://invisiblenetwork.ai/learn/nptel/115105451/5db7232f5484) (Video)
54. [Recap of pulse propagation and pulse length](https://invisiblenetwork.ai/learn/nptel/115105451/daa27dd21fac) (Video)
55. [Discussion of RMS pulse width and uncertainty principle](https://invisiblenetwork.ai/learn/nptel/115105451/9ef60c289562) (Video)
56. [Time-bandwidth product](https://invisiblenetwork.ai/learn/nptel/115105451/c985975f8950) (Video)
57. [Recap of previous module](https://invisiblenetwork.ai/learn/nptel/115105451/3858c4a6ca44) (Video)
58. [Introduction of Lorentz Oscillator Model](https://invisiblenetwork.ai/learn/nptel/115105451/716f4a804b59) (Video)
59. [Effect of matter on light](https://invisiblenetwork.ai/learn/nptel/115105451/001c28c2d5b7) (Video)
60. [Recap of Lorentz oscillator, Polarization tensor](https://invisiblenetwork.ai/learn/nptel/115105451/a556ec4c3384) (Video)
61. [Dynamics of electrons in the Lorentz oscillator](https://invisiblenetwork.ai/learn/nptel/115105451/63c0d650fab4) (Video)
62. [Solving the inhomogeneous wave equation](https://invisiblenetwork.ai/learn/nptel/115105451/28fa66d5375c) (Video)
63. [Inhomogeneous wave equation, absorption coefficient, refractive index](https://invisiblenetwork.ai/learn/nptel/115105451/53ddf30c52e5) (Video)
64. [Nonlinear response of matter](https://invisiblenetwork.ai/learn/nptel/115105451/75507c132460) (Video)
65. [Origin of nonlinear optical effects](https://invisiblenetwork.ai/learn/nptel/115105451/332b5e27fb52) (Video)
66. [Wave equation in an inert gas](https://invisiblenetwork.ai/learn/nptel/115105451/68f3d0a3b3fc) (Video)
67. [Perturbation theory and second harmonics](https://invisiblenetwork.ai/learn/nptel/115105451/d0e6501b1cc8) (Video)
68. [Numerical simulation strategy](https://invisiblenetwork.ai/learn/nptel/115105451/ee1b688dac12) (Video)
69. [Atoms in the presence of fields](https://invisiblenetwork.ai/learn/nptel/115105451/46255a14585d) (Video)
70. [Ionization models](https://invisiblenetwork.ai/learn/nptel/115105451/906d711746da) (Video)
71. [Attosecond pulse generation and metrology](https://invisiblenetwork.ai/learn/nptel/115105451/08da5b6144c9) (Video)
72. [Nonlinear optics review](https://invisiblenetwork.ai/learn/nptel/115105451/62b6c8e6ebb9) (Video)
73. [Nonlinear response of matter to light](https://invisiblenetwork.ai/learn/nptel/115105451/c8cf96ba5b28) (Video)
74. [Sum and difference frequency generation](https://invisiblenetwork.ai/learn/nptel/115105451/519b7be0afec) (Video)
75. [Recap of sum and difference frequency generation, second harmonic generation](https://invisiblenetwork.ai/learn/nptel/115105451/dd7d4ddead31) (Video)
76. [Generalized nonlinear effects, conservation laws in SHG](https://invisiblenetwork.ai/learn/nptel/115105451/aafc6826e0d7) (Video)
77. [Phase matching in SHG, polarization dependent refractive index](https://invisiblenetwork.ai/learn/nptel/115105451/5810d805a5d9) (Video)
78. [Review of Second Harmonic Generation](https://invisiblenetwork.ai/learn/nptel/115105451/07654a1a5000) (Video)
79. [Birefringence and Uniaxial Media](https://invisiblenetwork.ai/learn/nptel/115105451/635eab71d7c2) (Video)
80. [Phase Matching Using Birefringence](https://invisiblenetwork.ai/learn/nptel/115105451/e770713b6900) (Video)
81. [Second order nonlinear effects in isotropic media](https://invisiblenetwork.ai/learn/nptel/115105451/c5009ec32f47) (Video)
82. [Kerr effect and self phase modulation](https://invisiblenetwork.ai/learn/nptel/115105451/b30aa6e93950) (Video)
83. [Spatial domain Kerr effect](https://invisiblenetwork.ai/learn/nptel/115105451/e93955c963c5) (Video)
84. [Recap of previous lecture, birth of ultrafast technology](https://invisiblenetwork.ai/learn/nptel/115105451/74c2ef2c1450) (Video)
85. [Motivating the measurement of events in time](https://invisiblenetwork.ai/learn/nptel/115105451/9015650b1d75) (Video)
86. [Measuring Ultrashort pulses](https://invisiblenetwork.ai/learn/nptel/115105451/3bb11de971ba) (Video)
87. [Pulse Measurement in the Time-Domain](https://invisiblenetwork.ai/learn/nptel/115105451/71848217be64) (Video)
88. [Auto-correlation Measurements](https://invisiblenetwork.ai/learn/nptel/115105451/5d3614f4ba17) (Video)
89. [Types of Auto-correlation Measurements](https://invisiblenetwork.ai/learn/nptel/115105451/a71072592e38) (Video)
90. [Review of Interferometric Auto-correlation measurements](https://invisiblenetwork.ai/learn/nptel/115105451/7f8bcbdab4bb) (Video)
91. [Auto-correlation of complex pulses](https://invisiblenetwork.ai/learn/nptel/115105451/421d7b4f568f) (Video)
92. [Spectrogram and FROG](https://invisiblenetwork.ai/learn/nptel/115105451/61c4dacb1efa) (Video)
93. [Review of spectrograms](https://invisiblenetwork.ai/learn/nptel/115105451/1bd194b3b169) (Video)
94. [FROG as a phase-retrieval problem](https://invisiblenetwork.ai/learn/nptel/115105451/143bf895f5cb) (Video)
95. [FROG Measurements](https://invisiblenetwork.ai/learn/nptel/115105451/599cd67ee2cf) (Video)
96. [Live Session 14-02-2025](https://invisiblenetwork.ai/learn/nptel/115105451/c6d7f7a32374-2) (Video)
97. [Live Session 19-02-2025](https://invisiblenetwork.ai/learn/nptel/115105451/b83cba75df22-2) (Video)